Connectivity Software User's Guide and Reference
OnEffectivePermissionAssignmentChanged Method



OpcLabs.ServerOpcUA Assembly > OpcLabs.EasyOpc.UA.NodeSpace Namespace > UAServerNode Class : OnEffectivePermissionAssignmentChanged Method
The previous effective permission assignment.

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

Raises the EffectivePermissionAssignmentChanged event when the effective permission assignment changes.
Syntax
'Declaration
 
Protected Overridable Sub OnEffectivePermissionAssignmentChanged( _
   ByVal oldValue As UAPermissionAssignment _
) 
'Usage
 
Dim instance As UAServerNode
Dim oldValue As UAPermissionAssignment
 
instance.OnEffectivePermissionAssignmentChanged(oldValue)
protected virtual void OnEffectivePermissionAssignmentChanged( 
   UAPermissionAssignment oldValue
)
protected:
virtual void OnEffectivePermissionAssignmentChanged( 
   UAPermissionAssignment^ oldValue
) 

Parameters

oldValue
The previous effective permission assignment.

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

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.

This method also updates the effective permission assignment of all child nodes, as they may inherit the permission assignment from this node.

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