# OpcArgumentInfo Class

> Reference: Provides properties and methods for the examination a single argument of a node classified as Method.

<dl class="api-definition">
<dt>Namespace</dt>
<dd><a href="../namespaces/opc.uafx.client">Opc.UaFx.Client</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">OpcArgumentInfo Members</a></dd>
<dt>Also in</dt>
<dd>Opc.UaFx.Client</dd>
</dl>

Provides properties and methods for the examination a single argument of a node classified as [Method](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodecategory/#method).

## Syntax

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

```csharp
public class OpcArgumentInfo
```

</div>

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

```vbnet
Public Class OpcArgumentInfo
```

</div>

## Inheritance

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

## Properties

| Name | Description |
|---|---|
| [ArrayDimensions](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.client.opcargumentinfo/members#arraydimensions) | Gets the length for each dimension of an array value of the argument represented. |
| [ArrayLength](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.client.opcargumentinfo/members#arraylength) | Gets the total number of elements in all the dimensions of the array value of the argument represented. |
| [ArrayRank](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.client.opcargumentinfo/members#arrayrank) | Gets the rank (number of dimensions) of the array value of the argument represented. |
| [DataType](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.client.opcargumentinfo/members#datatype) | Gets the [OpcTypeNodeInfo](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.client.opctypenodeinfo/) about the data type node of the argument represented. |
| [DataTypeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.client.opcargumentinfo/members#datatypeid) | Gets the [OpcNodeId](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcnodeid/) about the data type node of the argument represented. |
| [DefaultValue](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.client.opcargumentinfo/members#defaultvalue) | Gets the value of the argument that is by default used in case there is no custom value specified for the argument. |
| [Description](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.client.opcargumentinfo/members#description) | Gets the textual description of the use of the argument represented. |
| [IsArray](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.client.opcargumentinfo/members#isarray) | Gets a value indicating whether the value of the argument represented is an array. |
| [Name](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.client.opcargumentinfo/members#name) | Gets the name of the argument. |

## Methods

| Name | Description |
|---|---|
| [GetArrayLength](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.client.opcargumentinfo/members#getarraylength) | Gets a 32-bit integer that represents the number of elements in the specified dimension of the array value of the argument. |
| [GetArrayLowerBound](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.client.opcargumentinfo/members#getarraylowerbound) | Gets the index of the first element of the specified dimension in the array value of the argument. |
| [GetArrayUpperBound](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.client.opcargumentinfo/members#getarrayupperbound) | Gets the index of the last element of the specified dimension in the array value of the argument. |

## Applies to

| Package | Versions |
|---|---|
| Opc.UaFx.Advanced | v2.5–v2.59 |