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//ÀàURLRewriter³ÌÐòÇåµ¥£º
      using System;
      using System.Data;
      using System.Configuration;
      using System.Web;
      using System.Web.Security;
      using System.Web.UI;
      using System.Web.UI.WebControls;
      using System.Web.UI.WebControls.WebParts;
      using System.Web.UI.HtmlControls;
      /// <summary>
      /// UrlRewriter URLÖØдÀà
         /// Author:yoyo
      /// blog:http://yangmingsheng.cn
      /// </summary>
      public class UrlRewriter : IHttpHandler //ʵÏÖ“IHttpHandler”½Ó¿Ú
      {
         public UrlRewriter()
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