70 lines
2.2 KiB
C#
70 lines
2.2 KiB
C#
//------------------------------------------------------------------------------
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// <copyright file="DataControlImageButton.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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//------------------------------------------------------------------------------
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namespace System.Web.UI.WebControls {
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using System;
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using System.Drawing;
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using System.Web.Util;
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/// <devdoc>
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/// Derived version of ImageButton used within a DataControl.
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/// </devdoc>
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[SupportsEventValidation]
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internal sealed class DataControlImageButton : ImageButton {
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IPostBackContainer _container;
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string _callbackArgument;
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bool _enableCallback;
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internal DataControlImageButton(IPostBackContainer container) {
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_container = container;
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}
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public override bool CausesValidation {
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get {
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return false;
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}
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set {
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throw new NotSupportedException(SR.GetString(SR.CannotSetValidationOnDataControlButtons));
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}
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}
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internal void EnableCallback(string argument) {
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_enableCallback = true;
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_callbackArgument = argument;
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}
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protected sealed override PostBackOptions GetPostBackOptions() {
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if (_container != null) {
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return _container.GetPostBackOptions(this);
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}
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return base.GetPostBackOptions();
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}
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protected internal override void Render(HtmlTextWriter writer) {
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SetCallbackProperties();
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base.Render(writer);
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}
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private void SetCallbackProperties() {
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if (_enableCallback) {
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ICallbackContainer _callbackContainer = _container as ICallbackContainer;
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if (_callbackContainer != null) {
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string callbackScript = _callbackContainer.GetCallbackScript(this, _callbackArgument);
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if (!String.IsNullOrEmpty(callbackScript)) {
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this.OnClientClick = callbackScript;
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}
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}
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}
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}
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}
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}
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