/// <summary>
/// Remove a handler for the given source's event.
/// </summary>
public static void RemoveHandler(CommandManager source, EventHandler handler)
{
if (handler == null)
return; // 4.0-compat; should be: throw new ArgumentNullException("handler");
CurrentManager.ProtectedRemoveHandler(source, handler);
}
/// <summary>
/// Stop listening to the given source for the event.
/// </summary>
protected override void StopListening(object source)
{
CommandManager typedSource = CommandManager.Current;
typedSource.PrivateRequerySuggested -= new EventHandler(OnRequerySuggested);
}