.net导出EXCEL

#region 导出EXCEL代码
    protected void Button3_Click(object sender, EventArgs e)
    {
        //if (this.GridView1.Rows.Count != 0)
        //{
        //    HttpContext.Current.Response.Clear();
        //    HttpContext.Current.Response.Charset = "utf-8";
        //    HttpContext.Current.Response.Buffer = true;
        //    HttpContext.Current.Response.ContentType = "application/excl";
        //    HttpContext.Current.Response.AddHeader("content-disposition", "attachment;filename=" + DateTime.Now.ToString("yyyyMMddHHmmss") + ".xls");
        //    System.IO.StringWriter writer = new System.IO.StringWriter();
        //    System.Web.UI.HtmlTextWriter htmlwrite = new HtmlTextWriter(writer);

        //    //this.GridView1.AllowPaging = false;
        //    this.LrTable1.RenderControl(htmlwrite);
        //    HttpContext.Current.Response.Write(writer);
        //}
        //else
        //{
        //    Response.Redirect("<script>alert('对不起，暂无信息可以导出！!')</script>");
        //}
        Response.Clear();
        Response.Buffer = true;
        Response.Charset = "utf-8";
        Response.AppendHeader("Content-Disposition", "attachment;filename=statzy.xls");
        Response.ContentEncoding = System.Text.Encoding.GetEncoding("utf-8");//设置输出流为简体中文
        Response.ContentType = "application/ms-excel";//设置输出文件类型为excel文件。 
        this.EnableViewState = false;
        System.Globalization.CultureInfo myCItrad = new System.Globalization.CultureInfo("ZH-CN", true);
        System.IO.StringWriter oStringWriter = new System.IO.StringWriter(myCItrad);
        System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);
        this.GridView1.RenderControl(oHtmlTextWriter);//将服务器控件的内容输出
        Response.Write(oStringWriter.ToString());
        Response.End();

    }
    public override void VerifyRenderingInServerForm(Control control)
    {
        //base.VerifyRenderingInServerForm(control);
    }
    #endregion

注释掉的是导出的GV以后的页面中所有东西！