ExistsCompletedEventHandler public sealed delegate ExistsCompletedEventHandler : MulticastDelegate Documentation public ExistsCompletedEventHandler(object TargetObject, IntPtr TargetMethod) public virtual IAsyncResult BeginInvoke(object sender, ExistsCompletedEventArgs e, AsyncCallback DelegateCallback, object DelegateAsyncState) public virtual void EndInvoke(IAsyncResult DelegateAsyncResult) public virtual void Invoke(object sender, ExistsCompletedEventArgs e)