Connectivity Software User's Guide and Reference
UnsubscribeAll Method



OpcLabs.EasySparkplug Assembly > OpcLabs.EasySparkplug Namespace > IEasySparkplugConsumerExtension Class : UnsubscribeAll Method
The consumer object that will perform the operation.

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

Unsubscribes from notifications for all metrics and payloads.
Syntax
'Declaration
 
<ExtensionAttribute()>
Public Shared Sub UnsubscribeAll( _
   ByVal consumer As IEasySparkplugConsumer _
) 
'Usage
 
Dim consumer As IEasySparkplugConsumer
 
IEasySparkplugConsumerExtension.UnsubscribeAll(consumer)
[Extension()]
public static void UnsubscribeAll( 
   IEasySparkplugConsumer consumer
)
[Extension()]
public:
static void UnsubscribeAll( 
   IEasySparkplugConsumer^ consumer
) 

Parameters

consumer
The consumer object that will perform the operation.

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

Exceptions
ExceptionDescription

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.

 

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Requirements

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

See Also