56 lines
2.1 KiB
C#
56 lines
2.1 KiB
C#
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//------------------------------------------------------------------------------
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// <copyright file="AdPostCacheSubstitution.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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/*
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* The class is used internally to handle post-cache substitution mechanism in
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* AdRotator.
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*
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* Copyright (c) 2002 Microsoft Corporation
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*/
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namespace System.Web.UI.WebControls {
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using System.Globalization;
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using System.IO;
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using System.Web.Util;
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internal class AdPostCacheSubstitution {
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private AdRotator _adRotatorHelper;
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private AdPostCacheSubstitution() {}
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internal AdPostCacheSubstitution(AdRotator adRotator) {
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_adRotatorHelper = new AdRotator();
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_adRotatorHelper.CopyFrom(adRotator);
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_adRotatorHelper.IsPostCacheAdHelper = true;
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_adRotatorHelper.Page = new Page();
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}
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internal void RegisterPostCacheCallBack(HttpContext context,
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Page page,
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HtmlTextWriter writer) {
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// Assumption: called from AdRotator's Render phase
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HttpResponseSubstitutionCallback callback = new HttpResponseSubstitutionCallback(Render);
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context.Response.WriteSubstitution(callback);
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}
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internal string Render(HttpContext context) {
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//
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Debug.Assert(_adRotatorHelper != null && _adRotatorHelper.Page != null);
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// In PostCache Substitution, we use a string writer to return the markup.
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StringWriter stringWriter = new StringWriter(CultureInfo.CurrentCulture);
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HtmlTextWriter htmlWriter = _adRotatorHelper.Page.CreateHtmlTextWriter(stringWriter);
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Debug.Assert(htmlWriter != null);
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_adRotatorHelper.RenderControl(htmlWriter);
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// Dump the content out as needed for post-cache substitution.
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return stringWriter.ToString();
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}
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}
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}
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