脚本宝典收集整理的这篇文章主要介绍了ASP.NET中的URL过滤实现代码，脚本宝典觉得挺不错的，现在分享给大家，也给大家做个参考。

下面是类的定义。

@H_360_6@
using System;
 using System.Web;
 using System.Web.Sessionstate;

 namespace QTJZ
 {
     public class filters : IHttpModule, IRequiresSessionState
     {
         public void Dispose() { }

         public void InIT(HttpApplication application)
         {
             application.AcquireRequestState += new EventHandler(application_AcquireRequestState);
         }

         public void application_AcquireRequestState(object sender, Eventargs e)
         {
             HttpApplication application = sender as HttpApplication;
             HttPRequest request = application.Request;
             HttpResponse response = application.Response;

             string url=request.currentExecutionFilePath.Trim('/');
             string suffix = request.CurrentExecutionFilePathExtension.Trim('.');

             if (!url.Equals("Default.htm") && (suffix == "aspx" || suffix == "htm"))
             {
                 object sessionObj = application.Context.Session == null ? null : application.Session["useiD"];
                 if (sessionObj==null)
                 {
                     response.redirect("~/Default.htm");
                 }
             }
         }
     }
 }