asp.net中Table生成Excel表格的方法

!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
html xmlns="http://www.w3.org/1999/xhtml">
head id="Head1" runat="server">
    meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    link href="/Css/Balance.css" rel="stylesheet" />
    title>/title>
    script runat="server">
        protected void writeXls(object sender, EventArgs e)
        {
            Response.Clear();
            Response.Buffer = true;
            Response.ContentType = "application/vnd.ms-excel.numberformat:@";
            this.EnableViewState = false;
            Response.Charset = "UTF-8";
            Response.ContentEncoding = System.Text.Encoding.GetEncoding("gb2312");//设置输出流为简体中文 
            Response.AppendHeader("Content-Disposition", "attachment;filename=" + Title + ".xls");
            Response.Write(printHid.Value);
            Response.End();
        }
    /script>
/head>
body>
   form id="form1" runat="server">
    asp:HiddenField ID="printHid" runat="server" />
      button onclick="getHtmltoValue()" >生成excel/button>
     script type="text/javascript">
       function getHtmltoValue() {
          document.getElementById("%=printHid.ClientID%>").value = document.getElementById("printDiv").innerHTML;
　　　　　　}
　　 /script>

       table >
            .......
        /table>
    /form>
/body>
html>