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

[Visual Basic]
 Public Delegate Sub  ActiveChangeDelegate( _
   ByVal sender As Object, _
   ByVal oldActive As Boolean _
   ByVal newActive As Boolean _
)
[C#]
 public class ActiveChangeDelegate(
   object sender,
   bool oldActive
   bool newActive
);
[C++]
 public __gc class ActiveChangeDelegate(
   Object* sender,
   String* oldActive
   String* newActive
);

[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 ActiveChangeDelegate delegate declaration.

sender

The source of the event.

oldActive

The previous active state of the item.

newActive

The new active state of the item.

Remarks

When you create an ActiveChangeDelegate 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