System.Web.UI.Page.GetCallbackTarget C# (CSharp) Метод

	ICallbackEventHandler GetCallbackTarget ()
	{
		string callbackTarget = _requestValueCollection [CallbackSourceID];
		if (callbackTarget == null || callbackTarget.Length == 0)
			throw new HttpException ("Callback target not provided.");

		Control targetControl = FindControl (callbackTarget, true);
		ICallbackEventHandler target = targetControl as ICallbackEventHandler;
		if (target == null)
			throw new HttpException (string.Format ("Invalid callback target '{0}'.", callbackTarget));
		return target;
	}