AsPublishSubscribeClient Method (IEasyUAClientExtension)

Derives an OPC UA publish-subscribe client object from the current client object.

Syntax

Visual Basic
C#
C++/CLI

'Declaration
 
<ExtensionAttribute()>
<NotNullAttribute()>
Public Shared Function AsPublishSubscribeClient( _
   ByVal client As IEasyUAClient _
) As IEasyUAPublishSubscribeClient

'Usage
 
Dim client As IEasyUAClient
Dim value As IEasyUAPublishSubscribeClient
 
value = IEasyUAClientExtension.AsPublishSubscribeClient(client)

[Extension()]
[NotNull()]
public static IEasyUAPublishSubscribeClient AsPublishSubscribeClient( 
   IEasyUAClient client
)

[Extension()]
[NotNull()]
public:
static IEasyUAPublishSubscribeClient^ AsPublishSubscribeClient( 
   IEasyUAClient^ client
)

Parameters

client

The client object that will perform the operation.

This is typically the EasyUAClient object.

The value of this parameter cannot be null (Nothing in Visual Basic).

Return Value

The OPC UA publish-subscribe client object derived from the current client object.

This method never returns null (Nothing in Visual Basic).

Exceptions

Exception Description

Exception	Description
System.ArgumentNullException	A `null` reference (`Nothing` in Visual Basic) is passed to a method that does not accept it as a valid argument. This is a usage error, i.e. it will never occur (the exception will not be thrown) in a correctly written program. Your code should not catch this exception.

System.ArgumentNullException

A null reference (Nothing in Visual Basic) is passed to a method that does not accept it as a valid argument.

This is a usage error, i.e. it will never occur (the exception will not be thrown) in a correctly written program. Your code should not catch this exception.

Remarks

This is an extension method (info: C#, VB.NET). In languages that have support for extensions methods (such as C# and VB.NET), you can use the extension method as if it were a regular method on the object that is its first parameter. In other languages (such as with Python.NET), you will call the extension as a static method, and pass it the object on which it acts as its first parameter.

Requirements

Target Platforms: .NET Framework: Windows 10 (selected versions), Windows 11 (selected versions), Windows Server 2016, Windows Server 2022; .NET: Linux, macOS, Microsoft Windows

Reference

IEasyUAClientExtension Class
IEasyUAClientExtension Members

Documentation Home, Send Documentation Feedback. Technical Support