# OpcNodeId Members > Reference: Defines an identifier for a node in the address space of an OPC UA Server.

Type: OpcNodeId
Namespace: Opc.UaFx
Assembly: Opc.UaFx.Advanced.dll
Package: Opc.UaFx.Advanced v2.59.0
Also in: Opc.UaFx.Client

## Constructors ### OpcNodeId 22 overloads | Overload | Description | |---|---| | [OpcNodeId(byte\[\])](#opcnodeid-system-byte-array) | Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value` specified. | | [OpcNodeId(byte\[\], int)](#opcnodeid-system-byte-array-system-int32) | Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value` and `namespaceIndex` specified. | | [OpcNodeId(byte\[\], OpcNamespace)](#opcnodeid-system-byte-array-opc-uafx-opcnamespace) | Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value` and `nodeNamespace` specified. | | [OpcNodeId(Guid)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#opcnodeid-system-guid) | Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value` specified. | | [OpcNodeId(Guid, int)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#opcnodeid-system-guid-system-int32) | Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value` and `namespaceIndex` specified. | | [OpcNodeId(Guid, OpcNamespace)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#opcnodeid-system-guid-opc-uafx-opcnamespace) | Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value` and `nodeNamespace` specified. | | [OpcNodeId(int)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#opcnodeid-system-int32) | Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value` specified. | | [OpcNodeId(int, int)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#opcnodeid-system-int32-system-int32) | Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value` and `namespaceIndex` specified. | | [OpcNodeId(int, OpcNamespace)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#opcnodeid-system-int32-opc-uafx-opcnamespace) | Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value` and `nodeNamespace` specified. | | [OpcNodeId(uint)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#opcnodeid-system-uint32) | Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value` specified. | | [OpcNodeId(uint, int)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#opcnodeid-system-uint32-system-int32) | Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value` and `namespaceIndex` specified. | | [OpcNodeId(uint, OpcNamespace)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#opcnodeid-system-uint32-opc-uafx-opcnamespace) | Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value` and `nodeNamespace` specified. | | [OpcNodeId(string)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#opcnodeid-system-string) | Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value` specified. | | [OpcNodeId(string, OpcNamePath)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#opcnodeid-system-string-opc-uafx-opcnamepath) | Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value` and `path` specified. | | [OpcNodeId(string, params OpcName\[\])](#opcnodeid-system-string-opc-uafx-opcname-array) | Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value` and `pathElements` specified. | | [OpcNodeId(string, int)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#opcnodeid-system-string-system-int32) | Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value` and `namespaceIndex` specified. | | [OpcNodeId(string, int, OpcNamePath)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#opcnodeid-system-string-system-int32-opc-uafx-opcnamepath) | Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value`, `namespaceIndex` and `path` specified. | | [OpcNodeId(string, int, params OpcName\[\])](#opcnodeid-system-string-system-int32-opc-uafx-opcname-array) | Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value`, `namespaceIndex` and `pathElements` specified. | | [OpcNodeId(string, OpcNamespace)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#opcnodeid-system-string-opc-uafx-opcnamespace) | Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value` and `nodeNamespace` specified. | | [OpcNodeId(string, OpcNamespace, OpcNamePath)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#opcnodeid-system-string-opc-uafx-opcnamespace-opc-uafx-opcnamepath) | Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value`, `nodeNamespace` and `path` specified. | | [OpcNodeId(string, OpcNamespace, params OpcName\[\])](#opcnodeid-system-string-opc-uafx-opcnamespace-opc-uafx-opcname-array) | Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value`, `nodeNamespace` and `pathElements` specified. | | [OpcNodeId(OpcNodeId)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#opcnodeid-opc-uafx-opcnodeid) | Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `other` specified. | #### OpcNodeId(byte\[\]) Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value` specified.

```csharp public OpcNodeId(byte[] value) ```

```vbnet Public Sub New(value As Byte()) ```

**Parameters** | Name | Type | Description | |---|---|---| | `value` | [Byte](https://learn.microsoft.com/dotnet/api/system.byte)[] | The opaque value of the identifier to represent. A value equals a null reference (Nothing in Visual Basic) or an array with the length equals to zero results into a null identifier (see [IsNull](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#isnull)). | #### OpcNodeId(byte\[\], int) Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value` and `namespaceIndex` specified.

```csharp public OpcNodeId(byte[] value, int namespaceIndex) ```

```vbnet Public Sub New(value As Byte(), namespaceIndex As Integer) ```

**Parameters** | Name | Type | Description | |---|---|---| | `value` | [Byte](https://learn.microsoft.com/dotnet/api/system.byte)[] | The opaque value of the identifier to represent. A value equals a null reference (Nothing in Visual Basic) or an array with the length equals to zero results into a null identifier (see [IsNull](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#isnull)). | | `namespaceIndex` | [Int32](https://learn.microsoft.com/dotnet/api/system.int32) | The index of the namespace that this identifier should refer to. | #### OpcNodeId(byte\[\], OpcNamespace) Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value` and `nodeNamespace` specified.

```csharp public OpcNodeId(byte[] value, OpcNamespace nodeNamespace) ```

```vbnet Public Sub New(value As Byte(), nodeNamespace As OpcNamespace) ```

**Parameters** | Name | Type | Description | |---|---|---| | `value` | [Byte](https://learn.microsoft.com/dotnet/api/system.byte)[] | The opaque value of the identifier to represent. A value equals a null reference (Nothing in Visual Basic) or an array with the length equals to zero results into a null identifier (see [IsNull](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#isnull)). | | `nodeNamespace` | [OpcNamespace](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnamespace/) | The namespace that this identifier should refer to. | #### OpcNodeId(Guid) Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value` specified.

```csharp public OpcNodeId(Guid value) ```

```vbnet Public Sub New(value As Guid) ```

**Parameters** | Name | Type | Description | |---|---|---| | `value` | [Guid](https://learn.microsoft.com/dotnet/api/system.guid) | The general unique identifier (= GUID) to use as the value of the identifier to represent. A value equals [Empty](https://learn.microsoft.com/dotnet/api/system.guid.empty) results into a null identifier (see [IsNull](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#isnull)). | #### OpcNodeId(Guid, int) Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value` and `namespaceIndex` specified.

```csharp public OpcNodeId(Guid value, int namespaceIndex) ```

```vbnet Public Sub New(value As Guid, namespaceIndex As Integer) ```

**Parameters** | Name | Type | Description | |---|---|---| | `value` | [Guid](https://learn.microsoft.com/dotnet/api/system.guid) | The general unique identifier (= GUID) to use as the value of the identifier to represent. A value equals [Empty](https://learn.microsoft.com/dotnet/api/system.guid.empty) results into a null identifier (see [IsNull](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#isnull)). | | `namespaceIndex` | [Int32](https://learn.microsoft.com/dotnet/api/system.int32) | The index of the namespace that this identifier should refer to. | #### OpcNodeId(Guid, OpcNamespace) Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value` and `nodeNamespace` specified.

```csharp public OpcNodeId(Guid value, OpcNamespace nodeNamespace) ```

```vbnet Public Sub New(value As Guid, nodeNamespace As OpcNamespace) ```

**Parameters** | Name | Type | Description | |---|---|---| | `value` | [Guid](https://learn.microsoft.com/dotnet/api/system.guid) | The general unique identifier (= GUID) to use as the value of the identifier to represent. A value equals [Empty](https://learn.microsoft.com/dotnet/api/system.guid.empty) results into a null identifier (see [IsNull](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#isnull)). | | `nodeNamespace` | [OpcNamespace](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnamespace/) | The namespace that this identifier should refer to. | #### OpcNodeId(int) Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value` specified.

```csharp public OpcNodeId(int value) ```

```vbnet Public Sub New(value As Integer) ```

**Parameters** | Name | Type | Description | |---|---|---| | `value` | [Int32](https://learn.microsoft.com/dotnet/api/system.int32) | The numeric value of the identifier to represent. A value equals zero results into a null identifier (see [IsNull](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#isnull)). | #### OpcNodeId(int, int) Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value` and `namespaceIndex` specified.

```csharp public OpcNodeId(int value, int namespaceIndex) ```

```vbnet Public Sub New(value As Integer, namespaceIndex As Integer) ```

**Parameters** | Name | Type | Description | |---|---|---| | `value` | [Int32](https://learn.microsoft.com/dotnet/api/system.int32) | The numeric value of the identifier to represent. A value equals zero results into a null identifier (see [IsNull](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#isnull)). | | `namespaceIndex` | [Int32](https://learn.microsoft.com/dotnet/api/system.int32) | The index of the namespace that this identifier should refer to. | #### OpcNodeId(int, OpcNamespace) Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value` and `nodeNamespace` specified.

```csharp public OpcNodeId(int value, OpcNamespace nodeNamespace) ```

```vbnet Public Sub New(value As Integer, nodeNamespace As OpcNamespace) ```

**Parameters** | Name | Type | Description | |---|---|---| | `value` | [Int32](https://learn.microsoft.com/dotnet/api/system.int32) | The numeric value of the identifier to represent. A value equals zero results into a null identifier (see [IsNull](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#isnull)). | | `nodeNamespace` | [OpcNamespace](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnamespace/) | The namespace that this identifier should refer to. | #### OpcNodeId(uint) Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value` specified.

```csharp public OpcNodeId(uint value) ```

```vbnet Public Sub New(value As UInteger) ```

**Parameters** | Name | Type | Description | |---|---|---| | `value` | [UInt32](https://learn.microsoft.com/dotnet/api/system.uint32) | The numeric value of the identifier to represent. A value equals zero results into a null identifier (see [IsNull](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#isnull)). | #### OpcNodeId(uint, int) Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value` and `namespaceIndex` specified.

```csharp public OpcNodeId(uint value, int namespaceIndex) ```

```vbnet Public Sub New(value As UInteger, namespaceIndex As Integer) ```

**Parameters** | Name | Type | Description | |---|---|---| | `value` | [UInt32](https://learn.microsoft.com/dotnet/api/system.uint32) | The numeric value of the identifier to represent. A value equals zero results into a null identifier (see [IsNull](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#isnull)). | | `namespaceIndex` | [Int32](https://learn.microsoft.com/dotnet/api/system.int32) | The index of the namespace that this identifier should refer to. | #### OpcNodeId(uint, OpcNamespace) Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value` and `nodeNamespace` specified.

```csharp public OpcNodeId(uint value, OpcNamespace nodeNamespace) ```

```vbnet Public Sub New(value As UInteger, nodeNamespace As OpcNamespace) ```

**Parameters** | Name | Type | Description | |---|---|---| | `value` | [UInt32](https://learn.microsoft.com/dotnet/api/system.uint32) | The numeric value of the identifier to represent. A value equals zero results into a null identifier (see [IsNull](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#isnull)). | | `nodeNamespace` | [OpcNamespace](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnamespace/) | The namespace that this identifier should refer to. | #### OpcNodeId(string) Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value` specified.

```csharp public OpcNodeId(string value) ```

```vbnet Public Sub New(value As String) ```

```csharp public OpcNodeId(string value, OpcNamePath path) ```

```vbnet Public Sub New(value As String, path As OpcNamePath) ```

**Parameters** | Name | Type | Description | |---|---|---| | `value` | [String](https://learn.microsoft.com/dotnet/api/system.string) | The [string](https://learn.microsoft.com/dotnet/api/system.string) value of the identifier to represent. A null reference (Nothing in Visual Basic) or a value equals [Empty](https://learn.microsoft.com/dotnet/api/system.string.empty) results into a null identifier (see [IsNull](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#isnull)). | | `path` | [OpcNamePath](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnamepath/) | The logical (= physically not available in the address space) portion of the identifier. | #### OpcNodeId(string, params OpcName\[\]) Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value` and `pathElements` specified.

```csharp public OpcNodeId(string value, params OpcName[] pathElements) ```

```vbnet Public Sub New(value As String, ParamArray pathElements As OpcName()) ```

**Parameters** | Name | Type | Description | |---|---|---| | `value` | [String](https://learn.microsoft.com/dotnet/api/system.string) | The [string](https://learn.microsoft.com/dotnet/api/system.string) value of the identifier to represent. A null reference (Nothing in Visual Basic) or a value equals [Empty](https://learn.microsoft.com/dotnet/api/system.string.empty) results into a null identifier (see [IsNull](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#isnull)). | | `pathElements` | params [OpcName](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/)[] | The elements of the [OpcNamePath](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnamepath/) to use as the logical (= physically not available in the address space) portion of the identifier. | #### OpcNodeId(string, int) Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value` and `namespaceIndex` specified.

```csharp public OpcNodeId(string value, int namespaceIndex) ```

```vbnet Public Sub New(value As String, namespaceIndex As Integer) ```

**Parameters** | Name | Type | Description | |---|---|---| | `value` | [String](https://learn.microsoft.com/dotnet/api/system.string) | The [string](https://learn.microsoft.com/dotnet/api/system.string) value of the identifier to represent. A null reference (Nothing in Visual Basic) or a value equals [Empty](https://learn.microsoft.com/dotnet/api/system.string.empty) results into a null identifier (see [IsNull](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#isnull)). | | `namespaceIndex` | [Int32](https://learn.microsoft.com/dotnet/api/system.int32) | The index of the namespace that this identifier should refer to. | #### OpcNodeId(string, int, OpcNamePath) Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value`, `namespaceIndex` and `path` specified.

```csharp public OpcNodeId(string value, int namespaceIndex, OpcNamePath path) ```

```vbnet Public Sub New(value As String, namespaceIndex As Integer, path As OpcNamePath) ```

**Parameters** | Name | Type | Description | |---|---|---| | `value` | [String](https://learn.microsoft.com/dotnet/api/system.string) | The [string](https://learn.microsoft.com/dotnet/api/system.string) value of the identifier to represent. A null reference (Nothing in Visual Basic) or a value equals [Empty](https://learn.microsoft.com/dotnet/api/system.string.empty) results into a null identifier (see [IsNull](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#isnull)). | | `namespaceIndex` | [Int32](https://learn.microsoft.com/dotnet/api/system.int32) | The index of the namespace that this identifier should refer to. | | `path` | [OpcNamePath](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnamepath/) | The logical (= physically not available in the address space) portion of the identifier. | #### OpcNodeId(string, int, params OpcName\[\]) Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value`, `namespaceIndex` and `pathElements` specified.

```csharp public OpcNodeId( string value, int namespaceIndex, params OpcName[] pathElements) ```

```vbnet Public Sub New( value As String, namespaceIndex As Integer, ParamArray pathElements As OpcName()) ```

**Parameters** | Name | Type | Description | |---|---|---| | `value` | [String](https://learn.microsoft.com/dotnet/api/system.string) | The [string](https://learn.microsoft.com/dotnet/api/system.string) value of the identifier to represent. A null reference (Nothing in Visual Basic) or a value equals [Empty](https://learn.microsoft.com/dotnet/api/system.string.empty) results into a null identifier (see [IsNull](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#isnull)). | | `namespaceIndex` | [Int32](https://learn.microsoft.com/dotnet/api/system.int32) | The index of the namespace that this identifier should refer to. | | `pathElements` | params [OpcName](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/)[] | The elements of the [OpcNamePath](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnamepath/) to use as the logical (= physically not available in the address space) portion of the identifier. | #### OpcNodeId(string, OpcNamespace) Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value` and `nodeNamespace` specified.

```csharp public OpcNodeId(string value, OpcNamespace nodeNamespace) ```

```vbnet Public Sub New(value As String, nodeNamespace As OpcNamespace) ```

**Parameters** | Name | Type | Description | |---|---|---| | `value` | [String](https://learn.microsoft.com/dotnet/api/system.string) | The [string](https://learn.microsoft.com/dotnet/api/system.string) value of the identifier to represent. A null reference (Nothing in Visual Basic) or a value equals [Empty](https://learn.microsoft.com/dotnet/api/system.string.empty) results into a null identifier (see [IsNull](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#isnull)). | | `nodeNamespace` | [OpcNamespace](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnamespace/) | The namespace that this identifier should refer to. | #### OpcNodeId(string, OpcNamespace, OpcNamePath) Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value`, `nodeNamespace` and `path` specified.

```csharp public OpcNodeId(string value, OpcNamespace nodeNamespace, OpcNamePath path) ```

```vbnet Public Sub New( value As String, nodeNamespace As OpcNamespace, path As OpcNamePath) ```

**Parameters** | Name | Type | Description | |---|---|---| | `value` | [String](https://learn.microsoft.com/dotnet/api/system.string) | The [string](https://learn.microsoft.com/dotnet/api/system.string) value of the identifier to represent. A null reference (Nothing in Visual Basic) or a value equals [Empty](https://learn.microsoft.com/dotnet/api/system.string.empty) results into a null identifier (see [IsNull](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#isnull)). | | `nodeNamespace` | [OpcNamespace](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnamespace/) | The namespace that this identifier should refer to. | | `path` | [OpcNamePath](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnamepath/) | The logical (= physically not available in the address space) portion of the identifier. | #### OpcNodeId(string, OpcNamespace, params OpcName\[\]) Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `value`, `nodeNamespace` and `pathElements` specified.

```csharp public OpcNodeId( string value, OpcNamespace nodeNamespace, params OpcName[] pathElements) ```

```vbnet Public Sub New( value As String, nodeNamespace As OpcNamespace, ParamArray pathElements As OpcName()) ```

**Parameters** | Name | Type | Description | |---|---|---| | `value` | [String](https://learn.microsoft.com/dotnet/api/system.string) | The [string](https://learn.microsoft.com/dotnet/api/system.string) value of the identifier to represent. A null reference (Nothing in Visual Basic) or a value equals [Empty](https://learn.microsoft.com/dotnet/api/system.string.empty) results into a null identifier (see [IsNull](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#isnull)). | | `nodeNamespace` | [OpcNamespace](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnamespace/) | The namespace that this identifier should refer to. | | `pathElements` | params [OpcName](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/)[] | The elements of the [OpcNamePath](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnamepath/) to use as the logical (= physically not available in the address space) portion of the identifier. | #### OpcNodeId(OpcNodeId) Initializes a new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the `other` specified.

```csharp public OpcNodeId(OpcNodeId other) ```

```vbnet Public Sub New(other As OpcNodeId) ```

```csharp public static readonly char DefaultSeparator ```

```vbnet Public Shared ReadOnly DefaultSeparator As Char ```

**Field value** [Char](https://learn.microsoft.com/dotnet/api/system.char) ### DefaultSeparatorOfPath static Defines the character which is used to separate node-component-node related node identifiers form each other when constructing a node-component-node related node identifier using [WithPath](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#withpath-opc-uafx-opcnamepath).

```csharp public static readonly char DefaultSeparatorOfPath ```

```vbnet Public Shared ReadOnly DefaultSeparatorOfPath As Char ```

**Field value** [Char](https://learn.microsoft.com/dotnet/api/system.char) ## Properties ### Factory static Gets or sets the globally used [OpcNodeIdFactory](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeidfactory/) to generate new instances of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class.

```csharp public static OpcNodeIdFactory Factory { get; set; } ```

```vbnet Public Shared Property Factory As OpcNodeIdFactory ```

**Property value** [OpcNodeIdFactory](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeidfactory/) An instance of a sub class of the [OpcNodeIdFactory](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeidfactory/) class. The default factory used is the [OpcNominalNodeIdFactory](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnominalnodeidfactory/). ### IsAbsolute Gets a value indicating whether the identifier is an absolute one.

```csharp public bool IsAbsolute { get; } ```

```vbnet Public ReadOnly Property IsAbsolute As Boolean ```

**Property value** [Boolean](https://learn.microsoft.com/dotnet/api/system.boolean) The value true if the [Namespace](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#namespace) is an absolute namespace and is therefore not server dependent upon its [Index](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnamespace/members#index); otherwise the value false. ### IsNull Gets a value indicating whether the node identifier is a null identifier.

```csharp public bool IsNull { get; } ```

```vbnet Public ReadOnly Property IsNull As Boolean ```

**Property value** [Boolean](https://learn.microsoft.com/dotnet/api/system.boolean) The value true if the [Value](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#value) defines a [Type](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#type) specific definition of a null identifier; otherwise the value false. **Remarks** A null identifier originates when a node identifier is created using: - A [byte](https://learn.microsoft.com/dotnet/api/system.byte)-array as the identifier value. In case there the [Opaque](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeidtype/#opaque) identifier value is a null reference (Nothing in Visual Basic) or an empty array (the length is equals zero). - A [Guid](https://learn.microsoft.com/dotnet/api/system.guid) as the identifier value. In case there the [Guid](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeidtype/#guid) identifier value is equals to [Empty](https://learn.microsoft.com/dotnet/api/system.guid.empty). - A [int](https://learn.microsoft.com/dotnet/api/system.int32) or [uint](https://learn.microsoft.com/dotnet/api/system.uint32) as the identifier value. In case there the [Numeric](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeidtype/#numeric) identifier value is equals to zero. - A [string](https://learn.microsoft.com/dotnet/api/system.string) as the identifier value. In case there the [String](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeidtype/#string) identifier value is a null reference (Nothing in Visual Basic) or equals to [Empty](https://learn.microsoft.com/dotnet/api/system.string.empty). ### Namespace Gets the [OpcNamespace](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnamespace/) used by the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) to describe the namespace to that the node identifier belongs.

```csharp public OpcNamespace Namespace { get; } ```

```vbnet Public ReadOnly Property [Namespace] As OpcNamespace ```

**Property value** [OpcNamespace](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnamespace/) An instance of the [OpcNamespace](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnamespace/) with the known information about the namespace to that the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) belongs. ### NamespaceIndex Gets the index of the namespace that this identifier belongs.

```csharp public int NamespaceIndex { get; } ```

```vbnet Public ReadOnly Property NamespaceIndex As Integer ```

**Property value** [Int32](https://learn.microsoft.com/dotnet/api/system.int32) The index value which refers to the namespace in the namespace array of the server to that the node identifier belong. **Remarks** The available namespaces of the server can be retrieved through reading the value of the namespaces-node using the node identifier 'OpcObjectTypes.Server.Namespaces'. ### NamespaceUri Gets the uniform resource identifier (URI) of the namespace referred by the [NamespaceIndex](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#namespaceindex).

```csharp public Uri NamespaceUri { get; } ```

```vbnet Public ReadOnly Property NamespaceUri As Uri ```

**Property value** [Uri](https://learn.microsoft.com/dotnet/api/system.uri) The [Uri](https://learn.microsoft.com/dotnet/api/system.uri) to that the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) refers using the [NamespaceIndex](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#namespaceindex). ### Null static Gets the default null node identifier.

```csharp public static OpcNodeId Null { get; } ```

```vbnet Public Shared ReadOnly Property Null As OpcNodeId ```

**Property value** [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) An instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) which can be used for general purpose in cases there a null node identifier is enough. ### OriginalFormat Gets the original format of the node identifier from that the instance was constructed.

```csharp public OpcNodeIdFormat OriginalFormat { get; } ```

```vbnet Public ReadOnly Property OriginalFormat As OpcNodeIdFormat ```

**Property value** [OpcNodeIdFormat](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeidformat/) The format used by the [string](https://learn.microsoft.com/dotnet/api/system.string) passed to the [Parse](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#parse) method from that the identifier has been constructed. If this instance has not been constructed through a [Parse](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#parse) call a constructor dependent [OpcNodeIdFormat](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeidformat/) enumeration member. ### OriginalString Gets the original node identifier string that was passed to the [Parse](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#parse) method.

```csharp public string OriginalString { get; } ```

```vbnet Public ReadOnly Property OriginalString As String ```

**Property value** [String](https://learn.microsoft.com/dotnet/api/system.string) A [string](https://learn.microsoft.com/dotnet/api/system.string) containing the exact node identifier specified from this instance was constructed; otherwise [Empty](https://learn.microsoft.com/dotnet/api/system.string.empty). ### Path Gets the path portion of the [Value](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#value) which refers to the logical (= physically not available in the address space) portion of the identifier.

```csharp public OpcNamePath Path { get; } ```

```vbnet Public ReadOnly Property Path As OpcNamePath ```

**Property value** [OpcNamePath](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnamepath/) An instance of the [OpcNamePath](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnamepath/) identifying the browse path to use to determine the according entity through the physically existing members in the address space. **Remarks** A [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) with a [OpcNamePath](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnamepath/) not equals [Empty](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnamepath/members#empty) identifies an entity which is not necessarily physically available in the address space. We define that the identifier of the physical ancestor of the entity identified by such an identifier (its logical owner which is physically available in the address space) is encoded in the [Value](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#value) of its [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) followed by the string formatted [Path](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#path). Excluding the [Path](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#path) from this [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) (see [ExcludePath](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#excludepath)) results into the identifier of the 'physical' ancestor. Using these (path-less) identifier the ancestor can be looked up in the address space and can be used to browse for the entity using the [Path](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#path) of the identifier of its successor. ### Resolution static · since v2.26 Gets an instance of the [OpcNodeIdResolution](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeidresolution/) class used to resolve node identifiers.

```csharp public static OpcNodeIdResolution Resolution { get; } ```

```vbnet Public Shared ReadOnly Property Resolution As OpcNodeIdResolution ```

**Property value** [OpcNodeIdResolution](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeidresolution/) An instance of the [OpcNodeIdResolution](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeidresolution/) class. ### Type Gets the type of [Value](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#value) used to define the identifier.

```csharp public OpcNodeIdType Type { get; } ```

```vbnet Public ReadOnly Property Type As OpcNodeIdType ```

**Property value** [OpcNodeIdType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeidtype/) One of the members defined by the [OpcNodeIdType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeidtype/) enumeration. The value dependents on the type of [Value](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#value) used for the identifier. ### Value Gets the [Type](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#type) dependent value of the identifier represented.

```csharp public object Value { get; } ```

```vbnet Public ReadOnly Property Value As Object ```

**Property value** [Object](https://learn.microsoft.com/dotnet/api/system.object) A [byte](https://learn.microsoft.com/dotnet/api/system.byte)-array, [Guid](https://learn.microsoft.com/dotnet/api/system.guid), [uint](https://learn.microsoft.com/dotnet/api/system.uint32) or [string](https://learn.microsoft.com/dotnet/api/system.string) value used to define the identifier. ### ValueAsString Gets the [Value](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#value) formatted as a [string](https://learn.microsoft.com/dotnet/api/system.string).

```csharp public string ValueAsString { get; } ```

```vbnet Public ReadOnly Property ValueAsString As String ```

**Property value** [String](https://learn.microsoft.com/dotnet/api/system.string) A [string](https://learn.microsoft.com/dotnet/api/system.string) representing the textual representation of the [Value](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#value). ## Methods ### Compare static · since v2.41 Compares two specified [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) objects according to a specific comparison method.

```csharp public static int Compare( OpcNodeId first, OpcNodeId second, OpcNodeIdComparison comparisonType = OpcNodeIdComparison.Default) ```

```vbnet Public Shared Function Compare( first As OpcNodeId, second As OpcNodeId, comparisonType As OpcNodeIdComparison = OpcNodeIdComparison.Default) As Integer ```

**Parameters** | Name | Type | Description | |---|---|---| | `first` | [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) | The first [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) to compare, or a null reference (Nothing in Visual Basic). | | `second` | [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) | The second [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) to compare, or a null reference (Nothing in Visual Basic). | | `comparisonType` | [OpcNodeIdComparison](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeidcomparison/) | One of the members defined by the [OpcNodeIdComparison](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeidcomparison/) enumeration that specifies the rules for the comparison. Optional, default `OpcNodeIdComparison.Default`. | **Returns** [Int32](https://learn.microsoft.com/dotnet/api/system.int32) A 32-bit signed integer that indicates the relative order of the objects being compared ([CompareTo(T)](https://learn.microsoft.com/dotnet/api/system.icomparable-1.compareto)). ### CompareTo 3 overloads | Overload | Description | |---|---| | [CompareTo(object)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#compareto-system-object) | Compares the current [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) with the `other`. | | [CompareTo(OpcNodeId)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#compareto-opc-uafx-opcnodeid) | Compares the current [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) with another [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/). | | [CompareTo(OpcNodeId, OpcNodeIdComparison)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#compareto-opc-uafx-opcnodeid-opc-uafx-opcnodeidcomparison)since v2.41 | Compares the current [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) with another [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) according to a specific comparison method. | #### CompareTo(object) Compares the current [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) with the `other`.

```csharp public int CompareTo(object other) ```

```vbnet Public Function CompareTo(other As Object) As Integer ```

**Parameters** | Name | Type | Description | |---|---|---| | `other` | [Object](https://learn.microsoft.com/dotnet/api/system.object) | The [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) to compare with this [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/). | **Returns** [Int32](https://learn.microsoft.com/dotnet/api/system.int32) A 32-bit signed integer that indicates the relative order of the objects being compared ([CompareTo(object)](https://learn.microsoft.com/dotnet/api/system.icomparable.compareto)). **Implements** [CompareTo(object)](https://learn.microsoft.com/dotnet/api/system.icomparable.compareto) #### CompareTo(OpcNodeId) Compares the current [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) with another [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/).

```csharp public int CompareTo(OpcNodeId other) ```

```vbnet Public Function CompareTo(other As OpcNodeId) As Integer ```

```csharp public int CompareTo(OpcNodeId other, OpcNodeIdComparison comparisonType) ```

```vbnet Public Function CompareTo( other As OpcNodeId, comparisonType As OpcNodeIdComparison) As Integer ```

**Parameters** | Name | Type | Description | |---|---|---| | `other` | [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) | The [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) to compare with this [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/). | | `comparisonType` | [OpcNodeIdComparison](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeidcomparison/) | One of the members defined by the [OpcNodeIdComparison](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeidcomparison/) enumeration that specifies the rules for the comparison. | **Returns** [Int32](https://learn.microsoft.com/dotnet/api/system.int32) A 32-bit signed integer that indicates the relative order of the objects being compared ([CompareTo(T)](https://learn.microsoft.com/dotnet/api/system.icomparable-1.compareto)). ### Equals 5 overloads | Overload | Description | |---|---| | [Equals(OpcNodeId, OpcNodeId)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#equals-opc-uafx-opcnodeid-opc-uafx-opcnodeid)static · since v2.18 | Determines whether two specified [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) objects are equals. | | [Equals(OpcNodeId, OpcNodeId, OpcNodeIdComparison)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#equals-opc-uafx-opcnodeid-opc-uafx-opcnodeid-opc-uafx-opcnodeidcomparison)static · since v2.18 | Determines whether two specified [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) objects are equals according to a specific comparison method. | | [Equals(object)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#equals-system-object)override | Determines whether the specified `other` is equal to this [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/). | | [Equals(OpcNodeId)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#equals-opc-uafx-opcnodeid) | Determines whether the specified `other` is equal to this [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/). | | [Equals(OpcNodeId, OpcNodeIdComparison)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#equals-opc-uafx-opcnodeid-opc-uafx-opcnodeidcomparison)since v2.18 | Determines whether the specified [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) object is equals to this instance according to a specific comparison method. | #### Equals(OpcNodeId, OpcNodeId) static · since v2.18 Determines whether two specified [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) objects are equals.

```csharp public static bool Equals(OpcNodeId first, OpcNodeId second) ```

```vbnet Public Shared Function Equals( first As OpcNodeId, second As OpcNodeId) As Boolean ```

```csharp public static bool Equals( OpcNodeId first, OpcNodeId second, OpcNodeIdComparison comparisonType) ```

```vbnet Public Shared Function Equals( first As OpcNodeId, second As OpcNodeId, comparisonType As OpcNodeIdComparison) As Boolean ```

```csharp public override bool Equals(object other) ```

```vbnet Public Overrides Function Equals(other As Object) As Boolean ```

**Parameters** | Name | Type | Description | |---|---|---| | `other` | [Object](https://learn.microsoft.com/dotnet/api/system.object) | The [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) to compare to the current [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/). | **Returns** [Boolean](https://learn.microsoft.com/dotnet/api/system.boolean) The value true if the specified [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) is equal to the current [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/); otherwise the value false. **Overrides** [Equals(object)](https://learn.microsoft.com/dotnet/api/system.object.equals#system-object-equals%28system-object%29) #### Equals(OpcNodeId) Determines whether the specified `other` is equal to this [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/).

```csharp public bool Equals(OpcNodeId other) ```

```vbnet Public Function Equals(other As OpcNodeId) As Boolean ```

```csharp public bool Equals(OpcNodeId other, OpcNodeIdComparison comparisonType) ```

```vbnet Public Function Equals( other As OpcNodeId, comparisonType As OpcNodeIdComparison) As Boolean ```

```csharp public OpcNodeId ExcludePath() ```

```vbnet Public Function ExcludePath() As OpcNodeId ```

**Returns** [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) A new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class using the same [Namespace](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#namespace) as this [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) and the same [Value](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#value), but without any [Path](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#path) portion used by this [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/). **Remarks** In case there the identifier of the ancestor from that this [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) (with path) was created from is not of the [String](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeidtype/#string) type (see [Type](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#type)) this method will not recover its original [OpcNodeIdType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeidtype/). ### GetHashCode override Retrieves a hash code for this [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/).

```csharp public override int GetHashCode() ```

```vbnet Public Overrides Function GetHashCode() As Integer ```

**Returns** [Int32](https://learn.microsoft.com/dotnet/api/system.int32) An [int](https://learn.microsoft.com/dotnet/api/system.int32) that contains the hash code for the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/). **Overrides** [GetHashCode()](https://learn.microsoft.com/dotnet/api/system.object.gethashcode) ### IsNullOrEmpty static · since v2.14 Indicates whether the specified [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) is null or its [Value](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#value) is null, default or an empty string ("").

```csharp public static bool IsNullOrEmpty(OpcNodeId identifier) ```

```vbnet Public Shared Function IsNullOrEmpty(identifier As OpcNodeId) As Boolean ```

**Parameters** | Name | Type | Description | |---|---|---| | `identifier` | [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) | The [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) to test. | **Returns** [Boolean](https://learn.microsoft.com/dotnet/api/system.boolean) The value true if the `identifier` parameter or its [Value](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#value) is null, default or an empty string (""); otherwise the value false. **Remarks** This method ignores the circumstance whether the [Namespace](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#namespace) of the `identifier` might be specified anyway. ### Of static · 3 overloads | Overload | Description | |---|---| | [Of(OpcName)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#of-opc-uafx-opcname)static | Creates a new [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) instance from the `name` specified. | | [Of(OpcName, OpcNodeId)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#of-opc-uafx-opcname-opc-uafx-opcnodeid)static | Creates a new parent-child related [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) instance from the `name` and `parentNodeId` specified. | | [Of(OpcName, OpcNodeId, char)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#of-opc-uafx-opcname-opc-uafx-opcnodeid-system-char)static | Creates a new parent-child related [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) instance from the `name` and `parentNodeId` specified. | **Exceptions (all overloads)** | Exception | Condition | |---|---| | [ArgumentException](https://learn.microsoft.com/dotnet/api/system.argumentexception) | The `name` does not provide a [Value](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/members#value) nor a [NamespaceIndex](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/members#namespaceindex) from that a [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) can be created (see [IsNull](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/members#isnull)). | #### Of(OpcName) static Creates a new [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) instance from the `name` specified.

```csharp public static OpcNodeId Of(OpcName name) ```

```vbnet Public Shared Function [Of](name As OpcName) As OpcNodeId ```

**Parameters** | Name | Type | Description | |---|---|---| | `name` | [OpcName](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/) | The [OpcName](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/) its [Value](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/members#value) and [NamespaceIndex](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/members#namespaceindex) is used to create a new [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) of the type [String](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeidtype/#string). | **Returns** [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) A new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) created from the [Value](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/members#value) and [NamespaceIndex](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/members#namespaceindex) of the `name` specified. **Exceptions** | Exception | Condition | |---|---| | [ArgumentNullException](https://learn.microsoft.com/dotnet/api/system.argumentnullexception) | The `name` is a null reference (Nothing in Visual Basic). | #### Of(OpcName, OpcNodeId) static Creates a new parent-child related [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) instance from the `name` and `parentNodeId` specified.

```csharp public static OpcNodeId Of(OpcName name, OpcNodeId parentNodeId) ```

```vbnet Public Shared Function [Of]( name As OpcName, parentNodeId As OpcNodeId) As OpcNodeId ```

**Parameters** | Name | Type | Description | |---|---|---| | `name` | [OpcName](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/) | The [OpcName](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/) its [Value](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/members#value) and [NamespaceIndex](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/members#namespaceindex) is used to create a new [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) of the type [String](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeidtype/#string). | | `parentNodeId` | [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) | The [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) of the parent node its identifier is to be integrated into the new node identifier. | **Returns** [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) A new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) created from the [Value](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/members#value) and [NamespaceIndex](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/members#namespaceindex) of the `name` specified. **Exceptions** | Exception | Condition | |---|---| | [ArgumentNullException](https://learn.microsoft.com/dotnet/api/system.argumentnullexception) | The `name` or `parentNodeId` is a null reference (Nothing in Visual Basic). | #### Of(OpcName, OpcNodeId, char) static Creates a new parent-child related [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) instance from the `name` and `parentNodeId` specified.

```csharp public static OpcNodeId Of(OpcName name, OpcNodeId parentNodeId, char separator) ```

```vbnet Public Shared Function [Of]( name As OpcName, parentNodeId As OpcNodeId, separator As Char) As OpcNodeId ```

**Parameters** | Name | Type | Description | |---|---|---| | `name` | [OpcName](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/) | The [OpcName](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/) its [Value](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/members#value) and [NamespaceIndex](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/members#namespaceindex) is used to create a new [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) of the type [String](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeidtype/#string). | | `parentNodeId` | [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) | The [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) of the parent node its identifier is to be integrated into the new node identifier. | | `separator` | [Char](https://learn.microsoft.com/dotnet/api/system.char) | The [char](https://learn.microsoft.com/dotnet/api/system.char) used to separate the child node identifier from the `parentNodeId`. | **Returns** [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) A new instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) created from the [Value](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/members#value) and [NamespaceIndex](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/members#namespaceindex) of the `name` specified. **Exceptions** | Exception | Condition | |---|---| | [ArgumentNullException](https://learn.microsoft.com/dotnet/api/system.argumentnullexception) | The `name` or `parentNodeId` is a null reference (Nothing in Visual Basic). | **Remarks** In case there the `parentNodeId` ends with the `separator` specified it will be not adopted by the newly created node identifier. ### Parse static Converts a node identifier string to a [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) instance.

```csharp public static OpcNodeId Parse(string value) ```

```vbnet Public Shared Function Parse(value As String) As OpcNodeId ```

**Parameters** | Name | Type | Description | |---|---|---| | `value` | [String](https://learn.microsoft.com/dotnet/api/system.string) | A string that contains a node identifier. | **Returns** [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) An instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class. **Exceptions** | Exception | Condition | |---|---| | [FormatException](https://learn.microsoft.com/dotnet/api/system.formatexception) | The `value` is not a valid node identifier. | ### Resolve Resolves this node identifier to a new node identifier its [Namespace](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#namespace) might be known in the context of the `resolver` object specified.

```csharp public OpcNodeId Resolve(IOpcNamespaceResolver resolver) ```

```vbnet Public Function Resolve(resolver As IOpcNamespaceResolver) As OpcNodeId ```

**Parameters** | Name | Type | Description | |---|---|---| | `resolver` | [IOpcNamespaceResolver](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.iopcnamespaceresolver/) | An instance implementing the [IOpcNamespaceResolver](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.iopcnamespaceresolver/) interface to use to retrieve the namespace known using the namespace information of this identifier. | **Returns** [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) A deep copy of this [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) using either the resolved namespace or the same namespace as this node identifier. **Exceptions** | Exception | Condition | |---|---| | [ArgumentNullException](https://learn.microsoft.com/dotnet/api/system.argumentnullexception) | The `resolver` is a null reference (Nothing in Visual Basic). | ### ToString 2 overloads | Overload | Description | |---|---| | [ToString()](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#tostring-noparams)override | Returns a string representing the node identifier. | | [ToString(OpcNodeIdFormat)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#tostring-opc-uafx-opcnodeidformat) | Returns a string representing the node identifier in the `format` specified. | #### ToString() override Returns a string representing the node identifier.

```csharp public override string ToString() ```

```vbnet Public Overrides Function ToString() As String ```

**Returns** [String](https://learn.microsoft.com/dotnet/api/system.string) A string formatted using the [OriginalFormat](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#originalformat) from that the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) has been constructed. The format dependents on the format detected through calling [Parse](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#parse) or the format defined using a specific constructor. **Overrides** [ToString()](https://learn.microsoft.com/dotnet/api/system.object.tostring) #### ToString(OpcNodeIdFormat) Returns a string representing the node identifier in the `format` specified.

```csharp public string ToString(OpcNodeIdFormat format) ```

```vbnet Public Function ToString(format As OpcNodeIdFormat) As String ```

**Parameters** | Name | Type | Description | |---|---|---| | `format` | [OpcNodeIdFormat](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeidformat/) | One of the formatting styles defined by the [OpcNodeIdFormat](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeidformat/) enumeration. | **Returns** [String](https://learn.microsoft.com/dotnet/api/system.string) A string formatted using the `format` specified. ### TryParse static Determines whether a string is a valid node identifier.

```csharp public static bool TryParse(string value, out OpcNodeId nodeId) ```

```vbnet Public Shared Function TryParse(value As String, nodeId As OpcNodeId) As Boolean ```

**Parameters** | Name | Type | Description | |---|---|---| | `value` | [String](https://learn.microsoft.com/dotnet/api/system.string) | The string to validate. | | `nodeId` | out [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) | The [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) version of the string. | **Returns** [Boolean](https://learn.microsoft.com/dotnet/api/system.boolean) The value true, if `value` is a valid node identifier; otherwise the value false. ### UriIdentifier static Retrieves the [Value](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#value) of the `nodeId` as an [Uri](https://learn.microsoft.com/dotnet/api/system.uri).

```csharp public static Uri UriIdentifier(OpcNodeId nodeId) ```

```vbnet Public Shared Function UriIdentifier(nodeId As OpcNodeId) As Uri ```

**Parameters** | Name | Type | Description | |---|---|---| | `nodeId` | [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) | The [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) from its [Value](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#value) an [Uri](https://learn.microsoft.com/dotnet/api/system.uri) is to be retrieved. | **Returns** [Uri](https://learn.microsoft.com/dotnet/api/system.uri) An [Uri](https://learn.microsoft.com/dotnet/api/system.uri) if the [Type](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#type) of the `nodeId` is equals [String](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeidtype/#string) and the [Value](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#value) can be parsed to an [Uri](https://learn.microsoft.com/dotnet/api/system.uri); otherwise a null reference (Nothing in Visual Basic). **Exceptions** | Exception | Condition | |---|---| | [ArgumentNullException](https://learn.microsoft.com/dotnet/api/system.argumentnullexception) | The `nodeId` is a null reference (Nothing in Visual Basic). | **Remarks** This method can be used in scenarios there a server uses [Uri](https://learn.microsoft.com/dotnet/api/system.uri)-formatted strings as the identifier for its nodes, while its node managers defines different namespaces where the namespaceUris define base-uri's of the node identifier uri's. This allows the framework to determine the manager of a node without the need to know the concrete index of the namespace which defines the identifier of a node. ### WithPath 2 overloads | Overload | Description | |---|---| | [WithPath(OpcNamePath)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#withpath-opc-uafx-opcnamepath) | Defines a new [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) using the [Value](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#value), [Namespace](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#namespace) and [Path](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#path) of this [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) by combining this [Path](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#path) with the `path` specified. | | [WithPath(params OpcName\[\])](#withpath-opc-uafx-opcname-array) | Defines a new [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) using the [Value](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#value), [Namespace](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#namespace) and [Path](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#path) of this [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) by combining this [Path](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#path) with the `pathElements` specified. | #### WithPath(OpcNamePath) Defines a new [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) using the [Value](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#value), [Namespace](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#namespace) and [Path](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#path) of this [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) by combining this [Path](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#path) with the `path` specified.

```csharp public OpcNodeId WithPath(OpcNamePath path) ```

```vbnet Public Function WithPath(path As OpcNamePath) As OpcNodeId ```

**Parameters** | Name | Type | Description | |---|---|---| | `path` | [OpcNamePath](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnamepath/) | The logical (= physically not available in the address space) portion to append to the [Path](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#path) of this [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) for the identifier to create. | **Returns** [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) A new [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) derived from this [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) by extending the [Path](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#path) using the `path` specified. **Remarks** In case there this [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) is not of the [String](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeidtype/#string) type (see [Type](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#type)) the new one will be, because of the [Path](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#path) is encoded in the [Value](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#value). #### WithPath(params OpcName\[\]) Defines a new [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) using the [Value](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#value), [Namespace](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#namespace) and [Path](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#path) of this [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) by combining this [Path](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#path) with the `pathElements` specified.

```csharp public OpcNodeId WithPath(params OpcName[] pathElements) ```

```vbnet Public Function WithPath(ParamArray pathElements As OpcName()) As OpcNodeId ```

**Parameters** | Name | Type | Description | |---|---|---| | `pathElements` | params [OpcName](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/)[] | The elements of the [OpcNamePath](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnamepath/) to use as the logical (= physically not available in the address space) portion to append to the [Path](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#path) of this [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) for the identifier to create. | **Returns** [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) A new [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) derived from this [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) by extending the [Path](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#path) using the `pathElements` specified. **Remarks** In case there this [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) is not of the [String](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeidtype/#string) type (see [Type](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#type)) the new one will be, because of the [Path](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#path) is encoded in the [Value](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#value). ## Operators ### Equality static Returns a value indicating whether two instance of [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) are equal.

```csharp public static bool operator ==(OpcNodeId left, OpcNodeId right) ```

```vbnet Public Shared Operator =(left As OpcNodeId, right As OpcNodeId) As Boolean ```

```csharp public static explicit operator NodeId(OpcNodeId value) ```

```vbnet Public Shared Narrowing Operator CType(value As OpcNodeId) As NodeId ```

**Parameters** | Name | Type | Description | |---|---|---| | `value` | [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) | A [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) that represents the node id. | **Returns** NodeId An instance of the NodeId class initialized from the `value`. #### explicit operator ExpandedNodeId(OpcNodeId) static · since v2.16 Converts a [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) to an ExpandedNodeId object.

```csharp public static explicit operator ExpandedNodeId(OpcNodeId value) ```

```vbnet Public Shared Narrowing Operator CType(value As OpcNodeId) As ExpandedNodeId ```

**Parameters** | Name | Type | Description | |---|---|---| | `value` | [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) | A [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) that represents the node id. | **Returns** ExpandedNodeId An instance of the ExpandedNodeId class initialized from the `value`. ### GreaterThan static Determines whether the first specified [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) object is greater than the second specified [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) object.

```csharp public static bool operator >(OpcNodeId left, OpcNodeId right) ```

```vbnet Public Shared Operator >(left As OpcNodeId, right As OpcNodeId) As Boolean ```

```csharp public static bool operator >=(OpcNodeId left, OpcNodeId right) ```

```vbnet Public Shared Operator >=(left As OpcNodeId, right As OpcNodeId) As Boolean ```

**Parameters** | Name | Type | Description | |---|---|---| | `left` | [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) | The first [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) object. | | `right` | [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) | The second [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) object. | **Returns** [Boolean](https://learn.microsoft.com/dotnet/api/system.boolean) The value true if `left` is greater than or equal to `right`; otherwise, false. ### Implicit static · 4 overloads | Overload | Description | |---|---| | [implicit operator OpcNodeId(string)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#op-implicit-system-string-opc-uafx-opcnodeid)static | Converts a [string](https://learn.microsoft.com/dotnet/api/system.string) to an [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) object. | | [implicit operator OpcNodeId(int)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#op-implicit-system-int32-opc-uafx-opcnodeid)static | Converts a [int](https://learn.microsoft.com/dotnet/api/system.int32) to an [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) object. | | [implicit operator OpcNodeId(NodeId)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#op-implicit-opc-ua-nodeid-opc-uafx-opcnodeid)static | Converts a NodeId to an [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) object. | | [implicit operator OpcNodeId(ExpandedNodeId)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#op-implicit-opc-ua-expandednodeid-opc-uafx-opcnodeid)static | Converts a ExpandedNodeId to an [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) object. | #### implicit operator OpcNodeId(string) static Converts a [string](https://learn.microsoft.com/dotnet/api/system.string) to an [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) object.

```csharp public static implicit operator OpcNodeId(string value) ```

```vbnet Public Shared Widening Operator CType(value As String) As OpcNodeId ```

**Parameters** | Name | Type | Description | |---|---|---| | `value` | [String](https://learn.microsoft.com/dotnet/api/system.string) | A string that represents the node id. | **Returns** [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) An instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class initialized from the `value`. #### implicit operator OpcNodeId(int) static Converts a [int](https://learn.microsoft.com/dotnet/api/system.int32) to an [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) object.

```csharp public static implicit operator OpcNodeId(int value) ```

```vbnet Public Shared Widening Operator CType(value As Integer) As OpcNodeId ```

**Parameters** | Name | Type | Description | |---|---|---| | `value` | [Int32](https://learn.microsoft.com/dotnet/api/system.int32) | A [int](https://learn.microsoft.com/dotnet/api/system.int32) that represents the node id. | **Returns** [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) An instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class initialized from the `value`. #### implicit operator OpcNodeId(NodeId) static Converts a NodeId to an [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) object.

```csharp public static implicit operator OpcNodeId(NodeId value) ```

```vbnet Public Shared Widening Operator CType(value As NodeId) As OpcNodeId ```

**Parameters** | Name | Type | Description | |---|---|---| | `value` | NodeId | A NodeId that represents the node id. | **Returns** [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) An instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class initialized from the `value`. #### implicit operator OpcNodeId(ExpandedNodeId) static Converts a ExpandedNodeId to an [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) object.

```csharp public static implicit operator OpcNodeId(ExpandedNodeId value) ```

```vbnet Public Shared Widening Operator CType(value As ExpandedNodeId) As OpcNodeId ```

**Parameters** | Name | Type | Description | |---|---|---| | `value` | ExpandedNodeId | A ExpandedNodeId that represents expanded the node id. | **Returns** [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) An instance of the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) class initialized from the `value`. ### Inequality static Returns a value indicating whether two instances of [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) are not equal.

```csharp public static bool operator !=(OpcNodeId left, OpcNodeId right) ```

```vbnet Public Shared Operator <>(left As OpcNodeId, right As OpcNodeId) As Boolean ```

```csharp public static bool operator <(OpcNodeId left, OpcNodeId right) ```

```vbnet Public Shared Operator <(left As OpcNodeId, right As OpcNodeId) As Boolean ```

```csharp public static bool operator <=(OpcNodeId left, OpcNodeId right) ```

```vbnet Public Shared Operator <=(left As OpcNodeId, right As OpcNodeId) As Boolean ```