AsPublishSubscribeClient Method (IEasyUAClientExtension)

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

Syntax

Visual Basic
C#
C++/CLI

'Declaration
 
<ExtensionAttribute()>
<JetBrains.Annotations.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()]
[JetBrains.Annotations.NotNull()]
public static IEasyUAPublishSubscribeClient AsPublishSubscribeClient( 
   IEasyUAClient client
)

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

Parameters

client: The client object that will perform the operation.
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

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