# OpcAddVariableNode Members > Reference: Defines an abstract base class for a single command of the IOpcAddNodesService used to add one variable node (nodes of the category Variable).
Type
OpcAddVariableNode
Namespace
Opc.UaFx
Assembly
Opc.UaFx.Advanced.dll
Package
Opc.UaFx.Advanced v2.59.0
Also in
Opc.UaFx.Client
Inherits members from [OpcAddInstanceNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddinstancenode/members), [OpcAddNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddnode/members), [OpcNodeServiceCommand](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcnodeservicecommand/members), [OpcServiceCommand](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcservicecommand/members). ## Constructors ### OpcAddVariableNode protected ยท 20 overloads | Overload | Description | |---|---| | [OpcAddVariableNode(OpcVariableType, OpcName)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/members#opcaddvariablenode-opc-uafx-opcvariabletype-opc-uafx-opcname)protected | Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `type` of variable node to add, which shall be accessible by the `name` defined. | | [OpcAddVariableNode(OpcVariableType, OpcName, object)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/members#opcaddvariablenode-opc-uafx-opcvariabletype-opc-uafx-opcname-system-object)protected | Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `type` of variable node to add, which shall be accessible by the `name` defined. | | [OpcAddVariableNode(OpcVariableType, OpcName, OpcNodeId)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/members#opcaddvariablenode-opc-uafx-opcvariabletype-opc-uafx-opcname-opc-uafx-opcnodeid)protected | Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `type` of variable node to add, which shall be accessible by the `name` and `nodeId` defined. | | [OpcAddVariableNode(OpcVariableType, OpcName, OpcNodeId, object)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/members#opcaddvariablenode-opc-uafx-opcvariabletype-opc-uafx-opcname-opc-uafx-opcnodeid-system-object)protected | Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `type` of variable node to add, which shall be accessible by the `name` and `nodeId` defined. | | [OpcAddVariableNode(OpcVariableType, OpcName, OpcNodeId, OpcNodeId)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/members#opcaddvariablenode-opc-uafx-opcvariabletype-opc-uafx-opcname-opc-uafx-opcnodeid-opc-uafx-opcnodeid)protected | Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `type` of variable node to add, which shall be accessible by the `name` and `nodeId` defined. | | [OpcAddVariableNode(OpcVariableType, OpcName, OpcNodeId, OpcNodeId, object)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/members#opcaddvariablenode-opc-uafx-opcvariabletype-opc-uafx-opcname-opc-uafx-opcnodeid-opc-uafx-opcnodeid-system-object)protected | Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `type` of variable node to add, which shall be accessible by the `name` and `nodeId` defined. | | [OpcAddVariableNode(OpcVariableType, OpcName, OpcNodeId, OpcNodeId, OpcReferenceType)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/members#opcaddvariablenode-opc-uafx-opcvariabletype-opc-uafx-opcname-opc-uafx-opcnodeid-opc-uafx-opcnodeid-opc-uafx-opcreferencetype)protected | Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `type` of variable node to add, which shall be accessible by the `name` and `nodeId` defined. | | [OpcAddVariableNode(OpcVariableType, OpcName, OpcNodeId, OpcNodeId, OpcReferenceType, object)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/members#opcaddvariablenode-opc-uafx-opcvariabletype-opc-uafx-opcname-opc-uafx-opcnodeid-opc-uafx-opcnodeid-opc-uafx-opcreferencetype-system-object)protected | Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `type` of variable node to add, which shall be accessible by the `name` and `nodeId` defined. | | [OpcAddVariableNode(OpcVariableType, OpcName, OpcNodeId, OpcNodeId, OpcNodeId)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/members#opcaddvariablenode-opc-uafx-opcvariabletype-opc-uafx-opcname-opc-uafx-opcnodeid-opc-uafx-opcnodeid-opc-uafx-opcnodeid)protected | Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `type` of variable node to add, which shall be accessible by the `name` and `nodeId` defined. | | [OpcAddVariableNode(OpcVariableType, OpcName, OpcNodeId, OpcNodeId, OpcNodeId, object)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/members#opcaddvariablenode-opc-uafx-opcvariabletype-opc-uafx-opcname-opc-uafx-opcnodeid-opc-uafx-opcnodeid-opc-uafx-opcnodeid-system-object)protected | Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `type` of variable node to add, which shall be accessible by the `name` and `nodeId` defined. | | [OpcAddVariableNode(OpcNodeId, OpcName)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/members#opcaddvariablenode-opc-uafx-opcnodeid-opc-uafx-opcname)protected | Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `typeDefinitionId` of variable node to add, which shall be accessible by the `name` defined. | | [OpcAddVariableNode(OpcNodeId, OpcName, object)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/members#opcaddvariablenode-opc-uafx-opcnodeid-opc-uafx-opcname-system-object)protected | Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `typeDefinitionId` of variable node to add, which shall be accessible by the `name` defined. | | [OpcAddVariableNode(OpcNodeId, OpcName, OpcNodeId)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/members#opcaddvariablenode-opc-uafx-opcnodeid-opc-uafx-opcname-opc-uafx-opcnodeid)protected | Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `typeDefinitionId` of variable node to add, which shall be accessible by the `name` and `nodeId` defined. | | [OpcAddVariableNode(OpcNodeId, OpcName, OpcNodeId, object)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/members#opcaddvariablenode-opc-uafx-opcnodeid-opc-uafx-opcname-opc-uafx-opcnodeid-system-object)protected | Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `typeDefinitionId` of variable node to add, which shall be accessible by the `name` and `nodeId` defined. | | [OpcAddVariableNode(OpcNodeId, OpcName, OpcNodeId, OpcNodeId)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/members#opcaddvariablenode-opc-uafx-opcnodeid-opc-uafx-opcname-opc-uafx-opcnodeid-opc-uafx-opcnodeid)protected | Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `typeDefinitionId` of variable node to add, which shall be accessible by the `name` and `nodeId` defined. | | [OpcAddVariableNode(OpcNodeId, OpcName, OpcNodeId, OpcNodeId, object)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/members#opcaddvariablenode-opc-uafx-opcnodeid-opc-uafx-opcname-opc-uafx-opcnodeid-opc-uafx-opcnodeid-system-object)protected | Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `typeDefinitionId` of variable node to add, which shall be accessible by the `name` and `nodeId` defined. | | [OpcAddVariableNode(OpcNodeId, OpcName, OpcNodeId, OpcNodeId, OpcReferenceType)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/members#opcaddvariablenode-opc-uafx-opcnodeid-opc-uafx-opcname-opc-uafx-opcnodeid-opc-uafx-opcnodeid-opc-uafx-opcreferencetype)protected | Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `typeDefinitionId` of variable node to add, which shall be accessible by the `name` and `nodeId` defined. | | [OpcAddVariableNode(OpcNodeId, OpcName, OpcNodeId, OpcNodeId, OpcReferenceType, object)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/members#opcaddvariablenode-opc-uafx-opcnodeid-opc-uafx-opcname-opc-uafx-opcnodeid-opc-uafx-opcnodeid-opc-uafx-opcreferencetype-system-object)protected | Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `typeDefinitionId` of variable node to add, which shall be accessible by the `name` and `nodeId` defined. | | [OpcAddVariableNode(OpcNodeId, OpcName, OpcNodeId, OpcNodeId, OpcNodeId)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/members#opcaddvariablenode-opc-uafx-opcnodeid-opc-uafx-opcname-opc-uafx-opcnodeid-opc-uafx-opcnodeid-opc-uafx-opcnodeid)protected | Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `typeDefinitionId` of variable node to add, which shall be accessible by the `name` and `nodeId` defined. | | [OpcAddVariableNode(OpcNodeId, OpcName, OpcNodeId, OpcNodeId, OpcNodeId, object)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/members#opcaddvariablenode-opc-uafx-opcnodeid-opc-uafx-opcname-opc-uafx-opcnodeid-opc-uafx-opcnodeid-opc-uafx-opcnodeid-system-object)protected | Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `typeDefinitionId` of variable node to add, which shall be accessible by the `name` and `nodeId` defined. | #### OpcAddVariableNode(OpcVariableType, OpcName) protected Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `type` of variable node to add, which shall be accessible by the `name` defined. The according [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) to identify and access the new node is determined by the service. The new node will be a child of the [ObjectsFolder](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcobjecttypes/members#objectsfolder) node using [HasComponent](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/#hascomponent) as the type of reference.
```csharp protected OpcAddVariableNode(OpcVariableType type, OpcName name) ```
```vbnet Protected Sub New(type As OpcVariableType, name As OpcName) ```
**Parameters** | Name | Type | Description | |---|---|---| | `type` | [OpcVariableType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcvariabletype/) | One of the members defined by the [OpcVariableType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcvariabletype/) enumeration which identifies the predefined underlying type definition the new node will represent an instance of. | | `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/) through that the new variable node can be accessed. | **Exceptions** | Exception | Condition | |---|---| | [ArgumentException](https://learn.microsoft.com/dotnet/api/system.argumentexception) | The `name` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/members#null). | | [ArgumentNullException](https://learn.microsoft.com/dotnet/api/system.argumentnullexception) | The `name` is a null reference (Nothing in Visual Basic). | #### OpcAddVariableNode(OpcVariableType, OpcName, object) protected Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `type` of variable node to add, which shall be accessible by the `name` defined. The according [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) to identify and access the new node is determined by the service. The new node will be a child of the [ObjectsFolder](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcobjecttypes/members#objectsfolder) node using [HasComponent](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/#hascomponent) as the type of reference.
```csharp protected OpcAddVariableNode(OpcVariableType type, OpcName name, object value) ```
```vbnet Protected Sub New(type As OpcVariableType, name As OpcName, value As Object) ```
**Parameters** | Name | Type | Description | |---|---|---| | `type` | [OpcVariableType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcvariabletype/) | One of the members defined by the [OpcVariableType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcvariabletype/) enumeration which identifies the predefined underlying type definition the new node will represent an instance of. | | `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/) through that the new variable node can be accessed. | | `value` | [Object](https://learn.microsoft.com/dotnet/api/system.object) | The initial value of the new variable node. | **Exceptions** | Exception | Condition | |---|---| | [ArgumentException](https://learn.microsoft.com/dotnet/api/system.argumentexception) | The `name` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/members#null). | | [ArgumentNullException](https://learn.microsoft.com/dotnet/api/system.argumentnullexception) | The `name` is a null reference (Nothing in Visual Basic). | #### OpcAddVariableNode(OpcVariableType, OpcName, OpcNodeId) protected Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `type` of variable node to add, which shall be accessible by the `name` and `nodeId` defined. The new node will be a child of the [ObjectsFolder](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcobjecttypes/members#objectsfolder) node using [HasComponent](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/#hascomponent) as the type of reference.
```csharp protected OpcAddVariableNode( OpcVariableType type, OpcName name, OpcNodeId nodeId) ```
```vbnet Protected Sub New(type As OpcVariableType, name As OpcName, nodeId As OpcNodeId) ```
**Parameters** | Name | Type | Description | |---|---|---| | `type` | [OpcVariableType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcvariabletype/) | One of the members defined by the [OpcVariableType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcvariabletype/) enumeration which identifies the predefined underlying type definition the new node will represent an instance of. | | `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/) through that the new variable node can be accessed. | | `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/) through that the new node can be identified and accessed. In case there [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) is specified the server will determine the according [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) by its own. | **Exceptions** | Exception | Condition | |---|---| | [ArgumentException](https://learn.microsoft.com/dotnet/api/system.argumentexception) | The `name` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/members#null). | | [ArgumentNullException](https://learn.microsoft.com/dotnet/api/system.argumentnullexception) | The `name` or `nodeId` is a null reference (Nothing in Visual Basic). | #### OpcAddVariableNode(OpcVariableType, OpcName, OpcNodeId, object) protected Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `type` of variable node to add, which shall be accessible by the `name` and `nodeId` defined. The new node will be a child of the [ObjectsFolder](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcobjecttypes/members#objectsfolder) node using [HasComponent](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/#hascomponent) as the type of reference.
```csharp protected OpcAddVariableNode( OpcVariableType type, OpcName name, OpcNodeId nodeId, object value) ```
```vbnet Protected Sub New( type As OpcVariableType, name As OpcName, nodeId As OpcNodeId, value As Object) ```
**Parameters** | Name | Type | Description | |---|---|---| | `type` | [OpcVariableType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcvariabletype/) | One of the members defined by the [OpcVariableType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcvariabletype/) enumeration which identifies the predefined underlying type definition the new node will represent an instance of. | | `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/) through that the new variable node can be accessed. | | `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/) through that the new node can be identified and accessed. In case there [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) is specified the server will determine the according [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) by its own. | | `value` | [Object](https://learn.microsoft.com/dotnet/api/system.object) | The initial value of the new variable node. | **Exceptions** | Exception | Condition | |---|---| | [ArgumentException](https://learn.microsoft.com/dotnet/api/system.argumentexception) | The `name` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/members#null). | | [ArgumentNullException](https://learn.microsoft.com/dotnet/api/system.argumentnullexception) | The `name` or `nodeId` is a null reference (Nothing in Visual Basic). | #### OpcAddVariableNode(OpcVariableType, OpcName, OpcNodeId, OpcNodeId) protected Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `type` of variable node to add, which shall be accessible by the `name` and `nodeId` defined. The new node will be a child of the node identified by `parentNodeId` using [HasComponent](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/#hascomponent) as the type of reference.
```csharp protected OpcAddVariableNode( OpcVariableType type, OpcName name, OpcNodeId nodeId, OpcNodeId parentNodeId) ```
```vbnet Protected Sub New( type As OpcVariableType, name As OpcName, nodeId As OpcNodeId, parentNodeId As OpcNodeId) ```
**Parameters** | Name | Type | Description | |---|---|---| | `type` | [OpcVariableType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcvariabletype/) | One of the members defined by the [OpcVariableType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcvariabletype/) enumeration which identifies the predefined underlying type definition the new node will represent an instance of. | | `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/) through that the new variable node can be accessed. | | `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/) through that the new node can be identified and accessed. In case there [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) is specified the server will determine the according [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) by its own. | | `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 to reference using [HasComponent](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/#hascomponent) as the type of reference. | **Exceptions** | Exception | Condition | |---|---| | [ArgumentException](https://learn.microsoft.com/dotnet/api/system.argumentexception) | The `parentNodeId` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) or `name` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/members#null). | | [ArgumentNullException](https://learn.microsoft.com/dotnet/api/system.argumentnullexception) | The `name`, `nodeId` or `parentNodeId` is a null reference (Nothing in Visual Basic). | #### OpcAddVariableNode(OpcVariableType, OpcName, OpcNodeId, OpcNodeId, object) protected Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `type` of variable node to add, which shall be accessible by the `name` and `nodeId` defined. The new node will be a child of the node identified by `parentNodeId` using [HasComponent](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/#hascomponent) as the type of reference.
```csharp protected OpcAddVariableNode( OpcVariableType type, OpcName name, OpcNodeId nodeId, OpcNodeId parentNodeId, object value) ```
```vbnet Protected Sub New( type As OpcVariableType, name As OpcName, nodeId As OpcNodeId, parentNodeId As OpcNodeId, value As Object) ```
**Parameters** | Name | Type | Description | |---|---|---| | `type` | [OpcVariableType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcvariabletype/) | One of the members defined by the [OpcVariableType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcvariabletype/) enumeration which identifies the predefined underlying type definition the new node will represent an instance of. | | `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/) through that the new variable node can be accessed. | | `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/) through that the new node can be identified and accessed. In case there [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) is specified the server will determine the according [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) by its own. | | `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 to reference using [HasComponent](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/#hascomponent) as the type of reference. | | `value` | [Object](https://learn.microsoft.com/dotnet/api/system.object) | The initial value of the new variable node. | **Exceptions** | Exception | Condition | |---|---| | [ArgumentException](https://learn.microsoft.com/dotnet/api/system.argumentexception) | The `parentNodeId` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) or `name` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/members#null). | | [ArgumentNullException](https://learn.microsoft.com/dotnet/api/system.argumentnullexception) | The `name`, `nodeId` or `parentNodeId` is a null reference (Nothing in Visual Basic). | #### OpcAddVariableNode(OpcVariableType, OpcName, OpcNodeId, OpcNodeId, OpcReferenceType) protected Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `type` of variable node to add, which shall be accessible by the `name` and `nodeId` defined. The new node will be a child of the node identified by `parentNodeId` using the `referenceType` specified as the type of reference.
```csharp protected OpcAddVariableNode( OpcVariableType type, OpcName name, OpcNodeId nodeId, OpcNodeId parentNodeId, OpcReferenceType referenceType) ```
```vbnet Protected Sub New( type As OpcVariableType, name As OpcName, nodeId As OpcNodeId, parentNodeId As OpcNodeId, referenceType As OpcReferenceType) ```
**Parameters** | Name | Type | Description | |---|---|---| | `type` | [OpcVariableType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcvariabletype/) | One of the members defined by the [OpcVariableType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcvariabletype/) enumeration which identifies the predefined underlying type definition the new node will represent an instance of. | | `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/) through that the new variable node can be accessed. | | `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/) through that the new node can be identified and accessed. In case there [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) is specified the server will determine the according [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) by its own. | | `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 to reference using [HasComponent](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/#hascomponent) as the type of reference. | | `referenceType` | [OpcReferenceType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/) | One of the members defined by the [OpcReferenceType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/) enumeration to use to setup the reference between the new node and the existing parent node identified by `parentNodeId`. | **Exceptions** | Exception | Condition | |---|---| | [ArgumentException](https://learn.microsoft.com/dotnet/api/system.argumentexception) | The `parentNodeId` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) or `name` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/members#null). | | [ArgumentNullException](https://learn.microsoft.com/dotnet/api/system.argumentnullexception) | The `name`, `nodeId` or `parentNodeId` is a null reference (Nothing in Visual Basic). | #### OpcAddVariableNode(OpcVariableType, OpcName, OpcNodeId, OpcNodeId, OpcReferenceType, object) protected Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `type` of variable node to add, which shall be accessible by the `name` and `nodeId` defined. The new node will be a child of the node identified by `parentNodeId` using the `referenceType` specified as the type of reference.
```csharp protected OpcAddVariableNode( OpcVariableType type, OpcName name, OpcNodeId nodeId, OpcNodeId parentNodeId, OpcReferenceType referenceType, object value) ```
```vbnet Protected Sub New( type As OpcVariableType, name As OpcName, nodeId As OpcNodeId, parentNodeId As OpcNodeId, referenceType As OpcReferenceType, value As Object) ```
**Parameters** | Name | Type | Description | |---|---|---| | `type` | [OpcVariableType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcvariabletype/) | One of the members defined by the [OpcVariableType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcvariabletype/) enumeration which identifies the predefined underlying type definition the new node will represent an instance of. | | `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/) through that the new variable node can be accessed. | | `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/) through that the new node can be identified and accessed. In case there [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) is specified the server will determine the according [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) by its own. | | `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 to reference using [HasComponent](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/#hascomponent) as the type of reference. | | `referenceType` | [OpcReferenceType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/) | One of the members defined by the [OpcReferenceType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/) enumeration to use to setup the reference between the new node and the existing parent node identified by `parentNodeId`. | | `value` | [Object](https://learn.microsoft.com/dotnet/api/system.object) | The initial value of the new variable node. | **Exceptions** | Exception | Condition | |---|---| | [ArgumentException](https://learn.microsoft.com/dotnet/api/system.argumentexception) | The `parentNodeId` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) or `name` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/members#null). | | [ArgumentNullException](https://learn.microsoft.com/dotnet/api/system.argumentnullexception) | The `name`, `nodeId` or `parentNodeId` is a null reference (Nothing in Visual Basic). | #### OpcAddVariableNode(OpcVariableType, OpcName, OpcNodeId, OpcNodeId, OpcNodeId) protected Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `type` of variable node to add, which shall be accessible by the `name` and `nodeId` defined. The new node will be a child of the node identified by `parentNodeId` using the type of reference identified by the `referenceTypeId` specified.
```csharp protected OpcAddVariableNode( OpcVariableType type, OpcName name, OpcNodeId nodeId, OpcNodeId parentNodeId, OpcNodeId referenceTypeId) ```
```vbnet Protected Sub New( type As OpcVariableType, name As OpcName, nodeId As OpcNodeId, parentNodeId As OpcNodeId, referenceTypeId As OpcNodeId) ```
**Parameters** | Name | Type | Description | |---|---|---| | `type` | [OpcVariableType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcvariabletype/) | One of the members defined by the [OpcVariableType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcvariabletype/) enumeration which identifies the predefined underlying type definition the new node will represent an instance of. | | `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/) through that the new variable node can be accessed. | | `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/) through that the new node can be identified and accessed. In case there [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) is specified the server will determine the according [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) by its own. | | `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 to reference using the type of reference identified by `referenceTypeId`. | | `referenceTypeId` | [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/) which identifies the type of reference to use for the new node and the existing parent node identified by `parentNodeId`. | **Exceptions** | Exception | Condition | |---|---| | [ArgumentException](https://learn.microsoft.com/dotnet/api/system.argumentexception) | The `parentNodeId` or `referenceTypeId` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) or `name` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/members#null). | | [ArgumentNullException](https://learn.microsoft.com/dotnet/api/system.argumentnullexception) | The `name`, `nodeId`, `parentNodeId` or `referenceTypeId` is a null reference (Nothing in Visual Basic). | #### OpcAddVariableNode(OpcVariableType, OpcName, OpcNodeId, OpcNodeId, OpcNodeId, object) protected Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `type` of variable node to add, which shall be accessible by the `name` and `nodeId` defined. The new node will be a child of the node identified by `parentNodeId` using the type of reference identified by the `referenceTypeId` specified.
```csharp protected OpcAddVariableNode( OpcVariableType type, OpcName name, OpcNodeId nodeId, OpcNodeId parentNodeId, OpcNodeId referenceTypeId, object value) ```
```vbnet Protected Sub New( type As OpcVariableType, name As OpcName, nodeId As OpcNodeId, parentNodeId As OpcNodeId, referenceTypeId As OpcNodeId, value As Object) ```
**Parameters** | Name | Type | Description | |---|---|---| | `type` | [OpcVariableType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcvariabletype/) | One of the members defined by the [OpcVariableType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcvariabletype/) enumeration which identifies the predefined underlying type definition the new node will represent an instance of. | | `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/) through that the new variable node can be accessed. | | `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/) through that the new node can be identified and accessed. In case there [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) is specified the server will determine the according [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) by its own. | | `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 to reference using the type of reference identified by `referenceTypeId`. | | `referenceTypeId` | [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/) which identifies the type of reference to use for the new node and the existing parent node identified by `parentNodeId`. | | `value` | [Object](https://learn.microsoft.com/dotnet/api/system.object) | The initial value of the new variable node. | **Exceptions** | Exception | Condition | |---|---| | [ArgumentException](https://learn.microsoft.com/dotnet/api/system.argumentexception) | The `parentNodeId` or `referenceTypeId` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) or `name` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/members#null). | | [ArgumentNullException](https://learn.microsoft.com/dotnet/api/system.argumentnullexception) | The `name`, `nodeId`, `parentNodeId` or `referenceTypeId` is a null reference (Nothing in Visual Basic). | #### OpcAddVariableNode(OpcNodeId, OpcName) protected Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `typeDefinitionId` of variable node to add, which shall be accessible by the `name` defined. The according [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) to identify and access the new node is determined by the service. The new node will be a child of the [ObjectsFolder](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcobjecttypes/members#objectsfolder) node using [HasComponent](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/#hascomponent) as the type of reference.
```csharp protected OpcAddVariableNode(OpcNodeId typeDefinitionId, OpcName name) ```
```vbnet Protected Sub New(typeDefinitionId As OpcNodeId, name As OpcName) ```
**Parameters** | Name | Type | Description | |---|---|---| | `typeDefinitionId` | [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/) which identifies the type of object to use for the new node. | | `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/) through that the new variable node can be accessed. | **Exceptions** | Exception | Condition | |---|---| | [ArgumentException](https://learn.microsoft.com/dotnet/api/system.argumentexception) | The `typeDefinitionId` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) or `name` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/members#null). | | [ArgumentNullException](https://learn.microsoft.com/dotnet/api/system.argumentnullexception) | The `typeDefinitionId` or `name` is a null reference (Nothing in Visual Basic). | #### OpcAddVariableNode(OpcNodeId, OpcName, object) protected Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `typeDefinitionId` of variable node to add, which shall be accessible by the `name` defined. The according [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) to identify and access the new node is determined by the service. The new node will be a child of the [ObjectsFolder](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcobjecttypes/members#objectsfolder) node using [HasComponent](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/#hascomponent) as the type of reference.
```csharp protected OpcAddVariableNode( OpcNodeId typeDefinitionId, OpcName name, object value) ```
```vbnet Protected Sub New( typeDefinitionId As OpcNodeId, name As OpcName, value As Object) ```
**Parameters** | Name | Type | Description | |---|---|---| | `typeDefinitionId` | [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/) which identifies the type of object to use for the new node. | | `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/) through that the new variable node can be accessed. | | `value` | [Object](https://learn.microsoft.com/dotnet/api/system.object) | The initial value of the new variable node. | **Exceptions** | Exception | Condition | |---|---| | [ArgumentException](https://learn.microsoft.com/dotnet/api/system.argumentexception) | The `typeDefinitionId` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) or `name` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/members#null). | | [ArgumentNullException](https://learn.microsoft.com/dotnet/api/system.argumentnullexception) | The `typeDefinitionId` or `name` is a null reference (Nothing in Visual Basic). | #### OpcAddVariableNode(OpcNodeId, OpcName, OpcNodeId) protected Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `typeDefinitionId` of variable node to add, which shall be accessible by the `name` and `nodeId` defined. The new node will be a child of the [ObjectsFolder](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcobjecttypes/members#objectsfolder) node using [HasComponent](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/#hascomponent) as the type of reference.
```csharp protected OpcAddVariableNode( OpcNodeId typeDefinitionId, OpcName name, OpcNodeId nodeId) ```
```vbnet Protected Sub New( typeDefinitionId As OpcNodeId, name As OpcName, nodeId As OpcNodeId) ```
**Parameters** | Name | Type | Description | |---|---|---| | `typeDefinitionId` | [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/) which identifies the type of object to use for the new node. | | `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/) through that the new variable node can be accessed. | | `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/) through that the new node can be identified and accessed. In case there [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) is specified the server will determine the according [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) by its own. | **Exceptions** | Exception | Condition | |---|---| | [ArgumentException](https://learn.microsoft.com/dotnet/api/system.argumentexception) | The `typeDefinitionId` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) or `name` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/members#null). | | [ArgumentNullException](https://learn.microsoft.com/dotnet/api/system.argumentnullexception) | The `typeDefinitionId`, `name` or `nodeId` is a null reference (Nothing in Visual Basic). | #### OpcAddVariableNode(OpcNodeId, OpcName, OpcNodeId, object) protected Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `typeDefinitionId` of variable node to add, which shall be accessible by the `name` and `nodeId` defined. The new node will be a child of the [ObjectsFolder](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcobjecttypes/members#objectsfolder) node using [HasComponent](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/#hascomponent) as the type of reference.
```csharp protected OpcAddVariableNode( OpcNodeId typeDefinitionId, OpcName name, OpcNodeId nodeId, object value) ```
```vbnet Protected Sub New( typeDefinitionId As OpcNodeId, name As OpcName, nodeId As OpcNodeId, value As Object) ```
**Parameters** | Name | Type | Description | |---|---|---| | `typeDefinitionId` | [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/) which identifies the type of object to use for the new node. | | `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/) through that the new variable node can be accessed. | | `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/) through that the new node can be identified and accessed. In case there [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) is specified the server will determine the according [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) by its own. | | `value` | [Object](https://learn.microsoft.com/dotnet/api/system.object) | The initial value of the new variable node. | **Exceptions** | Exception | Condition | |---|---| | [ArgumentException](https://learn.microsoft.com/dotnet/api/system.argumentexception) | The `typeDefinitionId` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) or `name` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/members#null). | | [ArgumentNullException](https://learn.microsoft.com/dotnet/api/system.argumentnullexception) | The `typeDefinitionId`, `name` or `nodeId` is a null reference (Nothing in Visual Basic). | #### OpcAddVariableNode(OpcNodeId, OpcName, OpcNodeId, OpcNodeId) protected Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `typeDefinitionId` of variable node to add, which shall be accessible by the `name` and `nodeId` defined. The new node will be a child of the node identified by `parentNodeId` using [HasComponent](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/#hascomponent) as the type of reference.
```csharp protected OpcAddVariableNode( OpcNodeId typeDefinitionId, OpcName name, OpcNodeId nodeId, OpcNodeId parentNodeId) ```
```vbnet Protected Sub New( typeDefinitionId As OpcNodeId, name As OpcName, nodeId As OpcNodeId, parentNodeId As OpcNodeId) ```
**Parameters** | Name | Type | Description | |---|---|---| | `typeDefinitionId` | [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/) which identifies the type of object to use for the new node. | | `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/) through that the new variable node can be accessed. | | `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/) through that the new node can be identified and accessed. In case there [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) is specified the server will determine the according [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) by its own. | | `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 to reference using [HasComponent](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/#hascomponent) as the type of reference. | **Exceptions** | Exception | Condition | |---|---| | [ArgumentException](https://learn.microsoft.com/dotnet/api/system.argumentexception) | The `typeDefinitionId` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) or `parentNodeId` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) or `name` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/members#null). | | [ArgumentNullException](https://learn.microsoft.com/dotnet/api/system.argumentnullexception) | The `typeDefinitionId`, `name`, `nodeId` or `parentNodeId` is a null reference (Nothing in Visual Basic). | #### OpcAddVariableNode(OpcNodeId, OpcName, OpcNodeId, OpcNodeId, object) protected Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `typeDefinitionId` of variable node to add, which shall be accessible by the `name` and `nodeId` defined. The new node will be a child of the node identified by `parentNodeId` using [HasComponent](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/#hascomponent) as the type of reference.
```csharp protected OpcAddVariableNode( OpcNodeId typeDefinitionId, OpcName name, OpcNodeId nodeId, OpcNodeId parentNodeId, object value) ```
```vbnet Protected Sub New( typeDefinitionId As OpcNodeId, name As OpcName, nodeId As OpcNodeId, parentNodeId As OpcNodeId, value As Object) ```
**Parameters** | Name | Type | Description | |---|---|---| | `typeDefinitionId` | [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/) which identifies the type of object to use for the new node. | | `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/) through that the new variable node can be accessed. | | `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/) through that the new node can be identified and accessed. In case there [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) is specified the server will determine the according [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) by its own. | | `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 to reference using [HasComponent](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/#hascomponent) as the type of reference. | | `value` | [Object](https://learn.microsoft.com/dotnet/api/system.object) | The initial value of the new variable node. | **Exceptions** | Exception | Condition | |---|---| | [ArgumentException](https://learn.microsoft.com/dotnet/api/system.argumentexception) | The `typeDefinitionId` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) or `parentNodeId` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) or `name` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/members#null). | | [ArgumentNullException](https://learn.microsoft.com/dotnet/api/system.argumentnullexception) | The `typeDefinitionId`, `name`, `nodeId` or `parentNodeId` is a null reference (Nothing in Visual Basic). | #### OpcAddVariableNode(OpcNodeId, OpcName, OpcNodeId, OpcNodeId, OpcReferenceType) protected Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `typeDefinitionId` of variable node to add, which shall be accessible by the `name` and `nodeId` defined. The new node will be a child of the node identified by `parentNodeId` using the `referenceType` specified as the type of reference.
```csharp protected OpcAddVariableNode( OpcNodeId typeDefinitionId, OpcName name, OpcNodeId nodeId, OpcNodeId parentNodeId, OpcReferenceType referenceType) ```
```vbnet Protected Sub New( typeDefinitionId As OpcNodeId, name As OpcName, nodeId As OpcNodeId, parentNodeId As OpcNodeId, referenceType As OpcReferenceType) ```
**Parameters** | Name | Type | Description | |---|---|---| | `typeDefinitionId` | [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/) which identifies the type of object to use for the new node. | | `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/) through that the new variable node can be accessed. | | `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/) through that the new node can be identified and accessed. In case there [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) is specified the server will determine the according [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) by its own. | | `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 to reference using [HasComponent](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/#hascomponent) as the type of reference. | | `referenceType` | [OpcReferenceType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/) | One of the members defined by the [OpcReferenceType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/) enumeration to use to setup the reference between the new node and the existing parent node identified by `parentNodeId`. | **Exceptions** | Exception | Condition | |---|---| | [ArgumentException](https://learn.microsoft.com/dotnet/api/system.argumentexception) | The `typeDefinitionId` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) or `parentNodeId` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) or `name` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/members#null). | | [ArgumentNullException](https://learn.microsoft.com/dotnet/api/system.argumentnullexception) | The `typeDefinitionId`, `name`, `nodeId` or `parentNodeId` is a null reference (Nothing in Visual Basic). | #### OpcAddVariableNode(OpcNodeId, OpcName, OpcNodeId, OpcNodeId, OpcReferenceType, object) protected Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `typeDefinitionId` of variable node to add, which shall be accessible by the `name` and `nodeId` defined. The new node will be a child of the node identified by `parentNodeId` using the `referenceType` specified as the type of reference.
```csharp protected OpcAddVariableNode( OpcNodeId typeDefinitionId, OpcName name, OpcNodeId nodeId, OpcNodeId parentNodeId, OpcReferenceType referenceType, object value) ```
```vbnet Protected Sub New( typeDefinitionId As OpcNodeId, name As OpcName, nodeId As OpcNodeId, parentNodeId As OpcNodeId, referenceType As OpcReferenceType, value As Object) ```
**Parameters** | Name | Type | Description | |---|---|---| | `typeDefinitionId` | [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/) which identifies the type of object to use for the new node. | | `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/) through that the new variable node can be accessed. | | `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/) through that the new node can be identified and accessed. In case there [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) is specified the server will determine the according [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) by its own. | | `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 to reference using [HasComponent](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/#hascomponent) as the type of reference. | | `referenceType` | [OpcReferenceType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/) | One of the members defined by the [OpcReferenceType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/) enumeration to use to setup the reference between the new node and the existing parent node identified by `parentNodeId`. | | `value` | [Object](https://learn.microsoft.com/dotnet/api/system.object) | The initial value of the new variable node. | **Exceptions** | Exception | Condition | |---|---| | [ArgumentException](https://learn.microsoft.com/dotnet/api/system.argumentexception) | The `typeDefinitionId` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) or `parentNodeId` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) or `name` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/members#null). | | [ArgumentNullException](https://learn.microsoft.com/dotnet/api/system.argumentnullexception) | The `typeDefinitionId`, `name`, `nodeId` or `parentNodeId` is a null reference (Nothing in Visual Basic). | #### OpcAddVariableNode(OpcNodeId, OpcName, OpcNodeId, OpcNodeId, OpcNodeId) protected Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `typeDefinitionId` of variable node to add, which shall be accessible by the `name` and `nodeId` defined. The new node will be a child of the node identified by `parentNodeId` using the type of reference identified by the `referenceTypeId` specified.
```csharp protected OpcAddVariableNode( OpcNodeId typeDefinitionId, OpcName name, OpcNodeId nodeId, OpcNodeId parentNodeId, OpcNodeId referenceTypeId) ```
```vbnet Protected Sub New( typeDefinitionId As OpcNodeId, name As OpcName, nodeId As OpcNodeId, parentNodeId As OpcNodeId, referenceTypeId As OpcNodeId) ```
**Parameters** | Name | Type | Description | |---|---|---| | `typeDefinitionId` | [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/) which identifies the type of object to use for the new node. | | `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/) through that the new variable node can be accessed. | | `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/) through that the new node can be identified and accessed. In case there [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) is specified the server will determine the according [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) by its own. | | `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 to reference using the type of reference identified by `referenceTypeId`. | | `referenceTypeId` | [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/) which identifies the type of reference to use for the new node and the existing parent node identified by `parentNodeId`. | **Exceptions** | Exception | Condition | |---|---| | [ArgumentException](https://learn.microsoft.com/dotnet/api/system.argumentexception) | The `typeDefinitionId` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) or `parentNodeId` or `referenceTypeId` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) or `name` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/members#null). | | [ArgumentNullException](https://learn.microsoft.com/dotnet/api/system.argumentnullexception) | The `typeDefinitionId`, `name`, `nodeId`, `parentNodeId` or `referenceTypeId` is a null reference (Nothing in Visual Basic). | #### OpcAddVariableNode(OpcNodeId, OpcName, OpcNodeId, OpcNodeId, OpcNodeId, object) protected Initializes a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the specified `typeDefinitionId` of variable node to add, which shall be accessible by the `name` and `nodeId` defined. The new node will be a child of the node identified by `parentNodeId` using the type of reference identified by the `referenceTypeId` specified.
```csharp protected OpcAddVariableNode( OpcNodeId typeDefinitionId, OpcName name, OpcNodeId nodeId, OpcNodeId parentNodeId, OpcNodeId referenceTypeId, object value) ```
```vbnet Protected Sub New( typeDefinitionId As OpcNodeId, name As OpcName, nodeId As OpcNodeId, parentNodeId As OpcNodeId, referenceTypeId As OpcNodeId, value As Object) ```
**Parameters** | Name | Type | Description | |---|---|---| | `typeDefinitionId` | [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/) which identifies the type of object to use for the new node. | | `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/) through that the new variable node can be accessed. | | `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/) through that the new node can be identified and accessed. In case there [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) is specified the server will determine the according [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) by its own. | | `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 to reference using the type of reference identified by `referenceTypeId`. | | `referenceTypeId` | [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/) which identifies the type of reference to use for the new node and the existing parent node identified by `parentNodeId`. | | `value` | [Object](https://learn.microsoft.com/dotnet/api/system.object) | The initial value of the new variable node. | **Exceptions** | Exception | Condition | |---|---| | [ArgumentException](https://learn.microsoft.com/dotnet/api/system.argumentexception) | The `typeDefinitionId` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) or `parentNodeId` or `referenceTypeId` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null) or `name` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcname/members#null). | | [ArgumentNullException](https://learn.microsoft.com/dotnet/api/system.argumentnullexception) | The `typeDefinitionId`, `name`, `nodeId`, `parentNodeId` or `referenceTypeId` is a null reference (Nothing in Visual Basic). | ## Properties ### AccessLevel Gets or sets a value which indicates in which ways the [Value](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/members#value) attribute of the variable node can be accessed (read/write) and if it provides current and/or historic data.
```csharp public OpcAccessLevel? AccessLevel { get; set; } ```
```vbnet Public Property AccessLevel As OpcAccessLevel? ```
**Property value** [Nullable](https://learn.microsoft.com/dotnet/api/system.nullable-1)<[OpcAccessLevel](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaccesslevel/)> One of the members defined by the [OpcAccessLevel](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaccesslevel/) enumeration if specified; otherwise a null reference (Nothing in Visual Basic). In case of a null reference (Nothing in Visual Basic) the server defined default value of the attribute is used. ### ArrayDimensions since v2.9 Gets the number/lengths of dimensions for an array [Value](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/members#value) with one or more fixed dimensions.
```csharp public OpcArrayDimensions ArrayDimensions { get; set; } ```
```vbnet Public Property ArrayDimensions As OpcArrayDimensions ```
**Property value** [OpcArrayDimensions](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcarraydimensions/) An instance of the [OpcArrayDimensions](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcarraydimensions/) class which offers the number/lengths of dimensions for an array [Value](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/members#value). **Remarks** If the [ValueRank](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/members#valuerank) does not identify an array of a specific dimension (i.e. [ValueRank](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/members#valuerank) <= 0) [ArrayDimensions](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/members#arraydimensions) can be a null reference (Nothing in Visual Basic). In case of a null reference (Nothing in Visual Basic) the server defined default value of the attribute is used. ### DataType virtual Gets or sets a value which defines a pre-defined used [DataTypeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/members#datatypeid) as one of the members defined by the [OpcDataType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcdatatype/) enumeration to simplify querying standard data types. A null reference (Nothing in Visual Basic) indicates that the attribute is undefined and its default value is used.
```csharp public virtual OpcDataType? DataType { get; set; } ```
```vbnet Public Overridable Property DataType As OpcDataType? ```
**Property value** [Nullable](https://learn.microsoft.com/dotnet/api/system.nullable-1)<[OpcDataType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcdatatype/)> One of the members defined by the [OpcDataType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcdatatype/) enumeration. ### DataTypeId Gets or stets the identifier which identifies the node that defines the type of data represented by the variable node. A null reference (Nothing in Visual Basic) indicates that the attribute is undefined and its default value is used.
```csharp public OpcNodeId DataTypeId { get; set; } ```
```vbnet Public Property DataTypeId As OpcNodeId ```
**Property value** [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 data type node which defines the type of data represented by the variable node. These data type node defines either a simple or a complex type of data accessible by the [Value](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/members#value) property. ### IsHistorizing Gets or sets a value indicating whether the server is actively collecting data for the history of the variable.
```csharp public bool? IsHistorizing { get; set; } ```
```vbnet Public Property IsHistorizing As Boolean? ```
**Property value** [Nullable](https://learn.microsoft.com/dotnet/api/system.nullable-1)<[Boolean](https://learn.microsoft.com/dotnet/api/system.boolean)> The value true if the server is actively collecting data; otherwise the value false (the default value) or a null reference (Nothing in Visual Basic). In case of a null reference (Nothing in Visual Basic) the server defined default value of the attribute is used. ### Type Gets value indicating the predefined underlying type definition the new node will represent an instance of.
```csharp public OpcVariableType Type { get; } ```
```vbnet Public ReadOnly Property Type As OpcVariableType ```
**Property value** [OpcVariableType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcvariabletype/) One of the members defined by the [OpcVariableType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcvariabletype/) enumeration or -1 in case of a custom type definition is used (see [TypeDefinitionId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddinstancenode/members#typedefinitionid)). ### UserAccessLevel Gets or sets a value which indicates in which ways the [Value](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/members#value) attribute of the variable node can be accessed (read/write) and if it provides current and/or historic data taking user access rights into account.
```csharp public OpcAccessLevel? UserAccessLevel { get; set; } ```
```vbnet Public Property UserAccessLevel As OpcAccessLevel? ```
**Property value** [Nullable](https://learn.microsoft.com/dotnet/api/system.nullable-1)<[OpcAccessLevel](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaccesslevel/)> One of the members defined by the [OpcAccessLevel](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaccesslevel/) enumeration if specified; otherwise a null reference (Nothing in Visual Basic). In case of a null reference (Nothing in Visual Basic) the server defined default value of the attribute is used. ### Value Gets or sets the value of the variable node which may be simple or complex. A null reference (Nothing in Visual Basic) indicates that the attribute is undefined and its default value is used.
```csharp public object Value { get; set; } ```
```vbnet Public Property Value As Object ```
**Property value** [Object](https://learn.microsoft.com/dotnet/api/system.object) A [object](https://learn.microsoft.com/dotnet/api/system.object) representing the value of the variable node. ### ValueRank Gets or sets a value which indicates whether the value attribute of the variable is an array and how many dimensions the array has.
```csharp public int? ValueRank { get; set; } ```
```vbnet Public Property ValueRank As Integer? ```
**Property value** [Nullable](https://learn.microsoft.com/dotnet/api/system.nullable-1)<[Int32](https://learn.microsoft.com/dotnet/api/system.int32)> One of the values defined by the ValueRanks class or a null reference (Nothing in Visual Basic). In case of a null reference (Nothing in Visual Basic) the server defined default value of the attribute is used. ## Methods ### OfType static Retrieves an instance which represents the definition of a variable type that can be used to define [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) command instances using the type of variable node represented by the [OpcAddVariableNode.TypeDefinition](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode.typedefinition/) instance provided.
```csharp public static OpcAddVariableNode.TypeDefinition OfType( OpcNodeId typeDefinitionId) ```
```vbnet Public Shared Function OfType( typeDefinitionId As OpcNodeId) As OpcAddVariableNode.TypeDefinition ```
**Parameters** | Name | Type | Description | |---|---|---| | `typeDefinitionId` | [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 type definition to provide. | **Returns** [OpcAddVariableNode.TypeDefinition](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode.typedefinition/) A new instance of the [OpcAddVariableNode.TypeDefinition](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode.typedefinition/) class which can be used to define typed [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) command instances. **Exceptions** | Exception | Condition | |---|---| | [ArgumentException](https://learn.microsoft.com/dotnet/api/system.argumentexception) | The `typeDefinitionId` is equals [Null](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/members#null). | | [ArgumentNullException](https://learn.microsoft.com/dotnet/api/system.argumentnullexception) | The `typeDefinitionId` is a null reference (Nothing in Visual Basic). |