Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / UI / WebControls / DataControlImageButton.cs / 1 / DataControlImageButton.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.UI.WebControls { using System; using System.Drawing; using System.Web.Util; ////// Derived version of ImageButton used within a DataControl. /// [SupportsEventValidation] internal sealed class DataControlImageButton : ImageButton { IPostBackContainer _container; string _callbackArgument; bool _enableCallback; internal DataControlImageButton(IPostBackContainer container) { _container = container; } public override bool CausesValidation { get { return false; } set { throw new NotSupportedException(SR.GetString(SR.CannotSetValidationOnDataControlButtons)); } } internal void EnableCallback(string argument) { _enableCallback = true; _callbackArgument = argument; } protected sealed override PostBackOptions GetPostBackOptions() { if (_container != null) { return _container.GetPostBackOptions(this); } return base.GetPostBackOptions(); } protected internal override void Render(HtmlTextWriter writer) { SetCallbackProperties(); base.Render(writer); } private void SetCallbackProperties() { if (_enableCallback) { ICallbackContainer _callbackContainer = _container as ICallbackContainer; if (_callbackContainer != null) { string callbackScript = _callbackContainer.GetCallbackScript(this, _callbackArgument); if (!String.IsNullOrEmpty(callbackScript)) { this.OnClientClick = callbackScript; } } } } } }
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