Excel文件下载功能

HtmlTextWriter：能够帮助我们快速生成html语句。

下载功能实现代码

    protected void Button1_Click(object sender, EventArgs e)
         {
             int currentPage = AspNetPager1.CurrentPageIndex;
             int pageSize = AspNetPager1.PageSize;
             int recordCount;

             StudentDAL dal = new StudentDAL();
             DataSet ds = dal.GetPage(currentPage, pageSize, out recordCount);
             Repeater1.DataSource = ds;
             Repeater1.DataBind();
             ToExcel(Repeater1, "FinanceInContractor.xls");
         }

         #region 导出为Excel
         private void ToExcel(Control ctl, string FileName)
         {
             HttpContext.Current.Response.ContentType = "application/ms-excel"; HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + "" + FileName);
             ctl.Page.EnableViewState = false; System.IO.StringWriter tw = new System.IO.StringWriter();
             HtmlTextWriter hw = new HtmlTextWriter(tw);
             ctl.RenderControl(hw);
             HttpContext.Current.Response.Write(tw.ToString());
             HttpContext.Current.Response.End();
         }
         #endregion