protected bool OnExecuting()
{
if (Executing != null)
{
bool cancel = false;
CancelableEventHandler handler = Executing;
if (handler != null)
{
var args = new CancelableEventArgs();
foreach (CancelableEventHandler tmp in handler.GetInvocationList())
{
tmp(this, args);
if (!args.Cancel)
{
continue;
}
cancel = true;
break;
}
}
return(!cancel);
}
return(true);
}
/// <summary>
/// Handles the event with specified sender and handler.
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="handler">The handler.</param>
/// <returns><c>true</c> if handling was canceled,
/// <c>false</c> otherwise.</returns>
public bool Handle
(
object sender,
CancelableEventHandler handler
)
{
if (handler == null)
{
return(false);
}
Delegate[] list = handler.GetInvocationList();
foreach (CancelableEventHandler eventHandler
in list.OfType <CancelableEventHandler>())
{
eventHandler(sender, this);
if (Cancel)
{
return(true);
}
}
return(false);
}
