实现IHttpModule接口，给每个页面输出一段脚本

using System;

using System.Data;

using System.Configuration;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.HtmlControls;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

/// <summary>

///TGModule 的摘要说明

/// </summary>

public class TGModule : IHttpModule

{

    public void Dispose() { }

    public void Init(HttpApplication context)

    {

        context.EndRequest += new EventHandler(context_EndRequest);

    }

    void context_EndRequest(object sender, EventArgs e)

    {

        HttpApplication application = (HttpApplication)sender;

        HttpContext context = application.Context;

        HttpRequest request = application.Request;

        HttpResponse response = application.Response;

        string uri = request.RawUrl;

        string a = uri.Substring(uri.LastIndexOf(".") + 1);

        //只拦截aspx html页面

        if (a.Contains("aspx") || a.Contains("html"))

        {

            context.Response.Write(@"<script type='text/javascript' src='/zhuanti/tuangou.js'></script>");

        }

    }

}

<httpModules>

      <add name="TGModule" type="TGModule"/>

</httpModules>

<script type='text/javascript' src='/zhuanti/tuangou.js'></script>