OnDataSubscriptionChanged Method (UAServerNode)

Raises the DataSubscriptionChanged event, indicating when data subscription has been added, removed, or modified.

Syntax

Visual Basic
C#
C++/CLI

'Declaration
 
Protected Overridable Sub OnDataSubscriptionChanged( _
   ByVal e As UADataSubscriptionChangedEventArgs _
)

'Usage
 
Dim instance As UAServerNode
Dim e As UADataSubscriptionChangedEventArgs
 
instance.OnDataSubscriptionChanged(e)

protected virtual void OnDataSubscriptionChanged( 
   UADataSubscriptionChangedEventArgs e
)

protected:
virtual void OnDataSubscriptionChanged( 
   UADataSubscriptionChangedEventArgs^ e
)

Parameters

e: The event arguments.
The value of this parameter cannot be null (Nothing in Visual Basic).

Exceptions

Exception Description

Exception	Description
System.ArgumentException	One of the arguments provided to a method is not valid. 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.

System.ArgumentException

One of the arguments provided to a method is not valid.

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

The design of this method, including its naming and purpose, is according to Event Design recommendations in "Member design guidelines" by Microsoft.

In the derived classes, you can override this method instead of having to add an event handler for the event.

As opposed to the behavior of the DataSubscriptionChanged event, this method is also always called for child nodes, even when the HandleChildNodes property is set to false.

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

UAServerNode Class
UAServerNode Members

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