Represents a method that handles a change in an item's access path.

[Visual Basic]
 Public Delegate Sub  ItemIdChangeDelegate( _
   ByVal sender As Object, _
   ByVal oldId As String _
   ByVal newId As String _
)
[C#]
 public class ItemIdChangeDelegate(
   object sender,
   string oldId
   string newId
);
[C++]
 public __gc class ItemIdChangeDelegate(
   Object* sender,
   String* oldId
   String* newId
);

[JScript] In JScript, you can use the delegates in the .NET Framework, but you cannot define your own.

Parameters [Visual Basic, C#, C++]

The declaration of your event handler must have the same parameters as the ItemIdChangeDelegate delegate declaration.

sender

The source of the event.

oldId

The previous item ID of the item.

newId

The new item ID of the item.

Remarks

When you create an ItemIdChangeDelegate delegate, you identify the method that will handle the event. To associate the event with your event handler, add an instance of the delegate to the event. The event handler is called whenever the event occurs, unless you remove the delegate. For more information about event handler delegates, see Events and Delegates.

Requirements

Namespace: Visavi.Opc.Client

Platforms:  Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows .NET Server family

Assembly: Visavi.Opc.Client

See Also

Visavi.Opc.Client Namespace