# OpcAddVariableNode.TypeDefinition Class

> Reference: Refers to a type definition which can be used to define typed OpcAddVariableNode command instances.

<span class="api-meta">since v2.7</span>

<dl class="api-definition">
<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>Members</dt>
<dd><a href="./members">OpcAddVariableNode.TypeDefinition Members</a></dd>
<dt>Also in</dt>
<dd>Opc.UaFx.Client</dd>
</dl>

Refers to a type definition which can be used to define typed [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) command instances.

## Syntax

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

```csharp
public class OpcAddVariableNode.TypeDefinition
```

</div>

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

```vbnet
Public Class OpcAddVariableNode.TypeDefinition
```

</div>

## Inheritance

[Object](https://learn.microsoft.com/dotnet/api/system.object) → **OpcAddVariableNode.TypeDefinition**

## Properties

| Name | Description |
|---|---|
| [TypeDefinitionId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode.typedefinition/members#typedefinitionid) | Gets the identifier which identifies the node that defines the node definition represented by this instance. |

## Methods

| Name | Description |
|---|---|
| [Create](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode.typedefinition/members#create)<span class="api-meta">10 overloads</span> | Provides a new instance of the [OpcAddVariableNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcaddvariablenode/) class using the `name` of the OpcAddVariableNode.TypeDefinition specific variable node to add. |

## Applies to

| Package | Versions |
|---|---|
| Opc.UaFx.Advanced | v2.7–v2.59 |