# OpcClassicInterface Class

> Reference: Represents an interface specification of OPC Classic (e.g. OPC Data Access 2.0) which an OPC Classic server implements (see OpcClassicInterfaces).

<span class="api-meta">since v2.8</span>

<dl class="api-definition">
<dt>Namespace</dt>
<dd><a href="../namespaces/opc.uafx.classic">Opc.UaFx.Classic</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">OpcClassicInterface Members</a></dd>
</dl>

Represents an interface specification of OPC Classic (e.g. OPC Data Access 2.0) which an OPC Classic server implements (see [OpcClassicInterfaces](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.classic.opcclassicinterfaces/)).

## Syntax

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

```csharp
public class OpcClassicInterface
```

</div>

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

```vbnet
Public Class OpcClassicInterface
```

</div>

## Inheritance

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

## Constructors

| Name | Description |
|---|---|
| [OpcClassicInterface](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.classic.opcclassicinterface/members#opcclassicinterface) | Initializes a new instance of the OpcClassicInterface class using the specified `category`, `name`, `identifier` and `version`. |

## Properties

| Name | Description |
|---|---|
| [Category](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.classic.opcclassicinterface/members#category) | Gets the category of the interface specification. |
| [Identifier](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.classic.opcclassicinterface/members#identifier) | Gets the identifier of the interface specification. |
| [Name](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.classic.opcclassicinterface/members#name) | Gets the name of the interface specification. |
| [ShortName](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.classic.opcclassicinterface/members#shortname) | Gets the short name of the interface specification. |
| [Version](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.classic.opcclassicinterface/members#version) | Gets the version of the interface specification. |

## Methods

| Name | Description |
|---|---|
| [ToString](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.classic.opcclassicinterface/members#tostring)<span class="api-meta">override</span> | Returns the [Name](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.classic.opcclassicinterface/members#name) of the interface specification. |

## Applies to

| Package | Versions |
|---|---|
| Opc.UaFx.Advanced | v2.8–v2.59 |