# OpcAddInstanceNode Members

> Reference: Defines an abstract base class for a single command of the IOpcAddNodesService used to add one instance node.

<dl class="api-definition">
<dt>Type</dt>
<dd><a href="./">OpcAddInstanceNode</a></dd>
<dt>Namespace</dt>
<dd><a href="../namespaces/opc.uafx">Opc.UaFx</a></dd>
<dt>Assembly</dt>
<dd>Opc.UaFx.Advanced.dll</dd>
<dt>Package</dt>
<dd>Opc.UaFx.Advanced v2.59.0</dd>
<dt>Also in</dt>
<dd>Opc.UaFx.Client</dd>
</dl>

Inherits members from [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

### OpcAddInstanceNode

<span class="api-meta">protected · 10 overloads</span>

| Overload | Description |
|---|---|
| [OpcAddInstanceNode(OpcNodeCategory, OpcNodeId, OpcName)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddinstancenode/members#opcaddinstancenode-opc-uafx-opcnodecategory-opc-uafx-opcnodeid-opc-uafx-opcname)<span class="api-meta">protected</span> | Initializes a new instance of the [OpcAddNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddnode/) class using the specified `category` and type of node (see `typeDefinitionId`) to add, which shall be accessible by the `name` defined. |
| [OpcAddInstanceNode(OpcNodeCategory, OpcNodeId, OpcName, params OpcAddInstanceNode\[\])](#opcaddinstancenode-opc-uafx-opcnodecategory-opc-uafx-opcnodeid-opc-uafx-opcname-opc-uafx-opcaddinstancenode-array)<span class="api-meta">protected</span> | Initializes a new instance of the [OpcAddNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddnode/) class using the specified `category` and type of node (see `typeDefinitionId`) to add, which shall be accessible by the `name` defined. |
| [OpcAddInstanceNode(OpcNodeCategory, OpcNodeId, OpcName, OpcNodeId)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddinstancenode/members#opcaddinstancenode-opc-uafx-opcnodecategory-opc-uafx-opcnodeid-opc-uafx-opcname-opc-uafx-opcnodeid)<span class="api-meta">protected</span> | Initializes a new instance of the [OpcAddNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddnode/) class using the specified `category` and type of node (see `typeDefinitionId`) to add, which shall be accessible by the `name` and `nodeId` defined. |
| [OpcAddInstanceNode(OpcNodeCategory, OpcNodeId, OpcName, OpcNodeId, params OpcAddInstanceNode\[\])](#opcaddinstancenode-opc-uafx-opcnodecategory-opc-uafx-opcnodeid-opc-uafx-opcname-opc-uafx-opcnodeid-opc-uafx-opcaddinstancenode-array)<span class="api-meta">protected</span> | Initializes a new instance of the [OpcAddNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddnode/) class using the specified `category` and type of node (see `typeDefinitionId`) to add, which shall be accessible by the `name` and `nodeId` defined. |
| [OpcAddInstanceNode(OpcNodeCategory, OpcNodeId, OpcName, OpcNodeId, OpcNodeId)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddinstancenode/members#opcaddinstancenode-opc-uafx-opcnodecategory-opc-uafx-opcnodeid-opc-uafx-opcname-opc-uafx-opcnodeid-opc-uafx-opcnodeid)<span class="api-meta">protected</span> | Initializes a new instance of the [OpcAddNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddnode/) class using the specified `category` and type of node (see `typeDefinitionId`) to add, which shall be accessible by the `name` and `nodeId` defined. |
| [OpcAddInstanceNode(OpcNodeCategory, OpcNodeId, OpcName, OpcNodeId, OpcNodeId, params OpcAddInstanceNode\[\])](#opcaddinstancenode-opc-uafx-opcnodecategory-opc-uafx-opcnodeid-opc-uafx-opcname-opc-uafx-opcnodeid-opc-uafx-opcnodeid-opc-uafx-opcaddinstancenode-array)<span class="api-meta">protected</span> | Initializes a new instance of the [OpcAddNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddnode/) class using the specified `category` and type of node (see `typeDefinitionId`) to add, which shall be accessible by the `name` and `nodeId` defined. |
| [OpcAddInstanceNode(OpcNodeCategory, OpcNodeId, OpcName, OpcNodeId, OpcNodeId, OpcReferenceType)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddinstancenode/members#opcaddinstancenode-opc-uafx-opcnodecategory-opc-uafx-opcnodeid-opc-uafx-opcname-opc-uafx-opcnodeid-opc-uafx-opcnodeid-opc-uafx-opcreferencetype)<span class="api-meta">protected</span> | Initializes a new instance of the [OpcAddNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddnode/) class using the specified `category` and type of node (see `typeDefinitionId`) to add, which shall be accessible by the `name` and `nodeId` defined. |
| [OpcAddInstanceNode(OpcNodeCategory, OpcNodeId, OpcName, OpcNodeId, OpcNodeId, OpcReferenceType, params OpcAddInstanceNode\[\])](#opcaddinstancenode-opc-uafx-opcnodecategory-opc-uafx-opcnodeid-opc-uafx-opcname-opc-uafx-opcnodeid-opc-uafx-opcnodeid-opc-uafx-opcreferencetype-opc-uafx-opcaddinstancenode-array)<span class="api-meta">protected</span> | Initializes a new instance of the [OpcAddNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddnode/) class using the specified `category` and type of node (see `typeDefinitionId`) to add, which shall be accessible by the `name` and `nodeId` defined. |
| [OpcAddInstanceNode(OpcNodeCategory, OpcNodeId, OpcName, OpcNodeId, OpcNodeId, OpcNodeId)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddinstancenode/members#opcaddinstancenode-opc-uafx-opcnodecategory-opc-uafx-opcnodeid-opc-uafx-opcname-opc-uafx-opcnodeid-opc-uafx-opcnodeid-opc-uafx-opcnodeid)<span class="api-meta">protected</span> | Initializes a new instance of the [OpcAddNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddnode/) class using the specified `category` and type of node (see `typeDefinitionId`) to add, which shall be accessible by the `name` and `nodeId` defined. |
| [OpcAddInstanceNode(OpcNodeCategory, OpcNodeId, OpcName, OpcNodeId, OpcNodeId, OpcNodeId, params OpcAddInstanceNode\[\])](#opcaddinstancenode-opc-uafx-opcnodecategory-opc-uafx-opcnodeid-opc-uafx-opcname-opc-uafx-opcnodeid-opc-uafx-opcnodeid-opc-uafx-opcnodeid-opc-uafx-opcaddinstancenode-array)<span class="api-meta">protected</span> | Initializes a new instance of the [OpcAddNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddnode/) class using the specified `category` and type of node (see `typeDefinitionId`) to add, which shall be accessible by the `name` and `nodeId` defined. |

#### OpcAddInstanceNode(OpcNodeCategory, OpcNodeId, OpcName)

<span class="api-meta">protected</span>

Initializes a new instance of the [OpcAddNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddnode/) class using the specified `category` and type of node (see `typeDefinitionId`) 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 [Organizes](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/#organizes) as the type of reference.

<div class="api-signature" data-lang="csharp">

```csharp
protected OpcAddInstanceNode(
    OpcNodeCategory category,
    OpcNodeId typeDefinitionId,
    OpcName name)
```

</div>

<div class="api-signature" data-lang="vbnet">

```vbnet
Protected Sub New(
    category As OpcNodeCategory,
    typeDefinitionId As OpcNodeId,
    name As OpcName)
```

</div>

**Parameters**

| Name | Type | Description |
|---|---|---|
| `category` | [OpcNodeCategory](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodecategory/) | The [OpcNodeCategory](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodecategory/) which classifies the new node to add regarding one of the classifications defined by the [OpcNodeCategory](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodecategory/) enumeration. |
| `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 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 instance 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). |

#### OpcAddInstanceNode(OpcNodeCategory, OpcNodeId, OpcName, params OpcAddInstanceNode\[\])

<span class="api-meta">protected</span>

Initializes a new instance of the [OpcAddNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddnode/) class using the specified `category` and type of node (see `typeDefinitionId`) 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 [Organizes](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/#organizes) as the type of reference.

<div class="api-signature" data-lang="csharp">

```csharp
protected OpcAddInstanceNode(
    OpcNodeCategory category,
    OpcNodeId typeDefinitionId,
    OpcName name,
    params OpcAddInstanceNode[] children)
```

</div>

<div class="api-signature" data-lang="vbnet">

```vbnet
Protected Sub New(
    category As OpcNodeCategory,
    typeDefinitionId As OpcNodeId,
    name As OpcName,
    ParamArray children As OpcAddInstanceNode())
```

</div>

**Parameters**

| Name | Type | Description |
|---|---|---|
| `category` | [OpcNodeCategory](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodecategory/) | The [OpcNodeCategory](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodecategory/) which classifies the new node to add regarding one of the classifications defined by the [OpcNodeCategory](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodecategory/) enumeration. |
| `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 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 instance node can be accessed. |
| `children` | params [OpcAddInstanceNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddinstancenode/)[] | The initial child nodes of the node to add. |

**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). |

#### OpcAddInstanceNode(OpcNodeCategory, OpcNodeId, OpcName, OpcNodeId)

<span class="api-meta">protected</span>

Initializes a new instance of the [OpcAddNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddnode/) class using the specified `category` and type of node (see `typeDefinitionId`) 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 [Organizes](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/#organizes) as the type of reference.

<div class="api-signature" data-lang="csharp">

```csharp
protected OpcAddInstanceNode(
    OpcNodeCategory category,
    OpcNodeId typeDefinitionId,
    OpcName name,
    OpcNodeId nodeId)
```

</div>

<div class="api-signature" data-lang="vbnet">

```vbnet
Protected Sub New(
    category As OpcNodeCategory,
    typeDefinitionId As OpcNodeId,
    name As OpcName,
    nodeId As OpcNodeId)
```

</div>

**Parameters**

| Name | Type | Description |
|---|---|---|
| `category` | [OpcNodeCategory](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodecategory/) | The [OpcNodeCategory](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodecategory/) which classifies the new node to add regarding one of the classifications defined by the [OpcNodeCategory](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodecategory/) enumeration. |
| `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 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 instance 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). |

#### OpcAddInstanceNode(OpcNodeCategory, OpcNodeId, OpcName, OpcNodeId, params OpcAddInstanceNode\[\])

<span class="api-meta">protected</span>

Initializes a new instance of the [OpcAddNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddnode/) class using the specified `category` and type of node (see `typeDefinitionId`) 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 [Organizes](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/#organizes) as the type of reference.

<div class="api-signature" data-lang="csharp">

```csharp
protected OpcAddInstanceNode(
    OpcNodeCategory category,
    OpcNodeId typeDefinitionId,
    OpcName name,
    OpcNodeId nodeId,
    params OpcAddInstanceNode[] children)
```

</div>

<div class="api-signature" data-lang="vbnet">

```vbnet
Protected Sub New(
    category As OpcNodeCategory,
    typeDefinitionId As OpcNodeId,
    name As OpcName,
    nodeId As OpcNodeId,
    ParamArray children As OpcAddInstanceNode())
```

</div>

**Parameters**

| Name | Type | Description |
|---|---|---|
| `category` | [OpcNodeCategory](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodecategory/) | The [OpcNodeCategory](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodecategory/) which classifies the new node to add regarding one of the classifications defined by the [OpcNodeCategory](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodecategory/) enumeration. |
| `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 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 instance 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. |
| `children` | params [OpcAddInstanceNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddinstancenode/)[] | The initial child nodes of the node to add. |

**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). |

#### OpcAddInstanceNode(OpcNodeCategory, OpcNodeId, OpcName, OpcNodeId, OpcNodeId)

<span class="api-meta">protected</span>

Initializes a new instance of the [OpcAddNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddnode/) class using the specified `category` and type of node (see `typeDefinitionId`) 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 [Organizes](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/#organizes) as the type of reference.

<div class="api-signature" data-lang="csharp">

```csharp
protected OpcAddInstanceNode(
    OpcNodeCategory category,
    OpcNodeId typeDefinitionId,
    OpcName name,
    OpcNodeId nodeId,
    OpcNodeId parentNodeId)
```

</div>

<div class="api-signature" data-lang="vbnet">

```vbnet
Protected Sub New(
    category As OpcNodeCategory,
    typeDefinitionId As OpcNodeId,
    name As OpcName,
    nodeId As OpcNodeId,
    parentNodeId As OpcNodeId)
```

</div>

**Parameters**

| Name | Type | Description |
|---|---|---|
| `category` | [OpcNodeCategory](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodecategory/) | The [OpcNodeCategory](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodecategory/) which classifies the new node to add regarding one of the classifications defined by the [OpcNodeCategory](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodecategory/) enumeration. |
| `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 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 instance 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 [Organizes](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/#organizes) as the type of reference. |

**Exceptions**

| Exception | Condition |
|---|---|
| [ArgumentException](https://learn.microsoft.com/dotnet/api/system.argumentexception) | The `typeDefinitionId` 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). |

#### OpcAddInstanceNode(OpcNodeCategory, OpcNodeId, OpcName, OpcNodeId, OpcNodeId, params OpcAddInstanceNode\[\])

<span class="api-meta">protected</span>

Initializes a new instance of the [OpcAddNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddnode/) class using the specified `category` and type of node (see `typeDefinitionId`) 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 [Organizes](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/#organizes) as the type of reference.

<div class="api-signature" data-lang="csharp">

```csharp
protected OpcAddInstanceNode(
    OpcNodeCategory category,
    OpcNodeId typeDefinitionId,
    OpcName name,
    OpcNodeId nodeId,
    OpcNodeId parentNodeId,
    params OpcAddInstanceNode[] children)
```

</div>

<div class="api-signature" data-lang="vbnet">

```vbnet
Protected Sub New(
    category As OpcNodeCategory,
    typeDefinitionId As OpcNodeId,
    name As OpcName,
    nodeId As OpcNodeId,
    parentNodeId As OpcNodeId,
    ParamArray children As OpcAddInstanceNode())
```

</div>

**Parameters**

| Name | Type | Description |
|---|---|---|
| `category` | [OpcNodeCategory](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodecategory/) | The [OpcNodeCategory](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodecategory/) which classifies the new node to add regarding one of the classifications defined by the [OpcNodeCategory](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodecategory/) enumeration. |
| `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 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 instance 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 [Organizes](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/#organizes) as the type of reference. |
| `children` | params [OpcAddInstanceNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddinstancenode/)[] | The initial child nodes of the node to add. |

**Exceptions**

| Exception | Condition |
|---|---|
| [ArgumentException](https://learn.microsoft.com/dotnet/api/system.argumentexception) | The `typeDefinitionId` 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). |

#### OpcAddInstanceNode(OpcNodeCategory, OpcNodeId, OpcName, OpcNodeId, OpcNodeId, OpcReferenceType)

<span class="api-meta">protected</span>

Initializes a new instance of the [OpcAddNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddnode/) class using the specified `category` and type of node (see `typeDefinitionId`) 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.

<div class="api-signature" data-lang="csharp">

```csharp
protected OpcAddInstanceNode(
    OpcNodeCategory category,
    OpcNodeId typeDefinitionId,
    OpcName name,
    OpcNodeId nodeId,
    OpcNodeId parentNodeId,
    OpcReferenceType referenceType)
```

</div>

<div class="api-signature" data-lang="vbnet">

```vbnet
Protected Sub New(
    category As OpcNodeCategory,
    typeDefinitionId As OpcNodeId,
    name As OpcName,
    nodeId As OpcNodeId,
    parentNodeId As OpcNodeId,
    referenceType As OpcReferenceType)
```

</div>

**Parameters**

| Name | Type | Description |
|---|---|---|
| `category` | [OpcNodeCategory](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodecategory/) | The [OpcNodeCategory](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodecategory/) which classifies the new node to add regarding one of the classifications defined by the [OpcNodeCategory](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodecategory/) enumeration. |
| `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 underlaying type definition the new node will represent and 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 instance 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 `referenceType` 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` 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). |

#### OpcAddInstanceNode(OpcNodeCategory, OpcNodeId, OpcName, OpcNodeId, OpcNodeId, OpcReferenceType, params OpcAddInstanceNode\[\])

<span class="api-meta">protected</span>

Initializes a new instance of the [OpcAddNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddnode/) class using the specified `category` and type of node (see `typeDefinitionId`) 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.

<div class="api-signature" data-lang="csharp">

```csharp
protected OpcAddInstanceNode(
    OpcNodeCategory category,
    OpcNodeId typeDefinitionId,
    OpcName name,
    OpcNodeId nodeId,
    OpcNodeId parentNodeId,
    OpcReferenceType referenceType,
    params OpcAddInstanceNode[] children)
```

</div>

<div class="api-signature" data-lang="vbnet">

```vbnet
Protected Sub New(
    category As OpcNodeCategory,
    typeDefinitionId As OpcNodeId,
    name As OpcName,
    nodeId As OpcNodeId,
    parentNodeId As OpcNodeId,
    referenceType As OpcReferenceType,
    ParamArray children As OpcAddInstanceNode())
```

</div>

**Parameters**

| Name | Type | Description |
|---|---|---|
| `category` | [OpcNodeCategory](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodecategory/) | The [OpcNodeCategory](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodecategory/) which classifies the new node to add regarding one of the classifications defined by the [OpcNodeCategory](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodecategory/) enumeration. |
| `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 underlaying type definition the new node will represent and 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 instance 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 `referenceType` 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`. |
| `children` | params [OpcAddInstanceNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddinstancenode/)[] | The initial child nodes of the node to add. |

**Exceptions**

| Exception | Condition |
|---|---|
| [ArgumentException](https://learn.microsoft.com/dotnet/api/system.argumentexception) | The `typeDefinitionId` 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). |

#### OpcAddInstanceNode(OpcNodeCategory, OpcNodeId, OpcName, OpcNodeId, OpcNodeId, OpcNodeId)

<span class="api-meta">protected</span>

Initializes a new instance of the [OpcAddNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddnode/) class using the specified `category` and type of node (see `typeDefinitionId`) 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.

<div class="api-signature" data-lang="csharp">

```csharp
protected OpcAddInstanceNode(
    OpcNodeCategory category,
    OpcNodeId typeDefinitionId,
    OpcName name,
    OpcNodeId nodeId,
    OpcNodeId parentNodeId,
    OpcNodeId referenceTypeId)
```

</div>

<div class="api-signature" data-lang="vbnet">

```vbnet
Protected Sub New(
    category As OpcNodeCategory,
    typeDefinitionId As OpcNodeId,
    name As OpcName,
    nodeId As OpcNodeId,
    parentNodeId As OpcNodeId,
    referenceTypeId As OpcNodeId)
```

</div>

**Parameters**

| Name | Type | Description |
|---|---|---|
| `category` | [OpcNodeCategory](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodecategory/) | The [OpcNodeCategory](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodecategory/) which classifies the new node to add regarding one of the classifications defined by the [OpcNodeCategory](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodecategory/) enumeration. |
| `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 underlaying type definition the new node will represent and 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 instance 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`, `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). |

#### OpcAddInstanceNode(OpcNodeCategory, OpcNodeId, OpcName, OpcNodeId, OpcNodeId, OpcNodeId, params OpcAddInstanceNode\[\])

<span class="api-meta">protected</span>

Initializes a new instance of the [OpcAddNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddnode/) class using the specified `category` and type of node (see `typeDefinitionId`) 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.

<div class="api-signature" data-lang="csharp">

```csharp
protected OpcAddInstanceNode(
    OpcNodeCategory category,
    OpcNodeId typeDefinitionId,
    OpcName name,
    OpcNodeId nodeId,
    OpcNodeId parentNodeId,
    OpcNodeId referenceTypeId,
    params OpcAddInstanceNode[] children)
```

</div>

<div class="api-signature" data-lang="vbnet">

```vbnet
Protected Sub New(
    category As OpcNodeCategory,
    typeDefinitionId As OpcNodeId,
    name As OpcName,
    nodeId As OpcNodeId,
    parentNodeId As OpcNodeId,
    referenceTypeId As OpcNodeId,
    ParamArray children As OpcAddInstanceNode())
```

</div>

**Parameters**

| Name | Type | Description |
|---|---|---|
| `category` | [OpcNodeCategory](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodecategory/) | The [OpcNodeCategory](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodecategory/) which classifies the new node to add regarding one of the classifications defined by the [OpcNodeCategory](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodecategory/) enumeration. |
| `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 underlaying type definition the new node will represent and 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 instance 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`. |
| `children` | params [OpcAddInstanceNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddinstancenode/)[] | The initial child nodes of the node to add. |

**Exceptions**

| Exception | Condition |
|---|---|
| [ArgumentException](https://learn.microsoft.com/dotnet/api/system.argumentexception) | The `typeDefinitionId`, `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

### Children

Gets a collection of [OpcAddNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddnode/) instances which define the sub-ordinated nodes to add as children to the node to add.

<div class="api-signature" data-lang="csharp">

```csharp
public OpcAddNodeCollection Children { get; }
```

</div>

<div class="api-signature" data-lang="vbnet">

```vbnet
Public ReadOnly Property Children As OpcAddNodeCollection
```

</div>

**Property value**

[OpcAddNodeCollection](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddnodecollection/)

An instance of the [OpcAddNodeCollection](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddnodecollection/) class with the [OpcAddNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddnode/) instances to process after the node defined by this [OpcAddInstanceNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddinstancenode/) has been added.

### ReferenceType

Gets a value which defines a pre-defined used [ReferenceTypeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddinstancenode/members#referencetypeid) as one of the members defined by the [OpcReferenceType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcreferencetype/) enumeration to simplify querying standard reference types.

<div class="api-signature" data-lang="csharp">

```csharp
public OpcReferenceType ReferenceType { get; }
```

</div>

<div class="api-signature" data-lang="vbnet">

```vbnet
Public ReadOnly Property ReferenceType As OpcReferenceType
```

</div>

**Property value**

[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.

### ReferenceTypeId

Gets the identifier which identifies the node that defines the semantic of the reference between a source and a target node and generally reflects an operation between the two, such as "A contains B".

<div class="api-signature" data-lang="csharp">

```csharp
public OpcNodeId ReferenceTypeId { get; }
```

</div>

<div class="api-signature" data-lang="vbnet">

```vbnet
Public ReadOnly Property ReferenceTypeId As OpcNodeId
```

</div>

**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 reference type node which defines the relation semantic between the source and a target node.

### TypeDefinitionId

Gets the identifier which identifies the node that defines the underlying node type from that the instance node is to be created.

<div class="api-signature" data-lang="csharp">

```csharp
public OpcNodeId TypeDefinitionId { get; }
```

</div>

<div class="api-signature" data-lang="vbnet">

```vbnet
Public ReadOnly Property TypeDefinitionId As OpcNodeId
```

</div>

**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 type node from that the instance node is to be created from. These type node defines the typical structure of an instance node of its type definition.