这几天一直在做ASP.NET的Excel导出，试了好多方式，要么报“类型“GridView”的控件“GridView1”必须放在具有 runat=server 的窗体标记内！”（解决方式：重写VerifyRenderingInServerForm（）方法，该方法写在CS后台。但是该方法导出的Excel没有网格。这样不太好。）
public override void VerifyRenderingInServerForm(Control control)
{
}
下面介绍一种可以导出网格的Excel并且不用重写方法的解决方式：
废话不多说，直接上代码。
/// <summary> /// 导出到Excel /// </summary> /// <param name="sender"></param> /// <param name="e"></param> protected void lbtToExcel_Click(object sender, EventArgs e) { ToExcel(); } /// <summary> /// 导出到Excel /// </summary> protected void ToExcel() { //新建一个Gridview，原因：避免当前窗口GridView外层没有直接跟form标签，从而避免“gridview1未包含在run='server'”的错误。 GridView gvOrders = new GridView(); System.IO.StringWriter sw = new System.IO.StringWriter(); //定义页面输出格式。 Response.Write("<meta http-equiv=Content-Type content=\"ms-excel; charset=utf-8\">"); //定义文件名称 string fileName = System.Web.HttpUtility.UrlEncode(Session["filename"] + DateTime.Now.ToString("_yyyyMMddHHmm"), Encoding.UTF8); //取得数据源 DataSet ds = GetDataSet(Session["sqlhs2"].ToString()); //设置Excel网格（注意XML内容，定义Sheet工作簿名称和网格线） if (ds.Tables[0] != null) { sw.WriteLine("<html xmlns:x=\"urn:schemas-microsoft-com:office:excel\">"); sw.WriteLine("<head>"); sw.WriteLine("<!--[if gte mso 9]>"); sw.WriteLine("<xml>"); sw.WriteLine(" <x:ExcelWorkbook>"); sw.WriteLine(" <x:ExcelWorksheets>"); sw.WriteLine(" <x:ExcelWorksheet>"); sw.WriteLine(" <x:Name>" + fileName + "</x:Name>"); sw.WriteLine(" <x:WorksheetOptions>"); sw.WriteLine(" <x:Print>"); sw.WriteLine(" <x:ValidPrinterInfo />"); sw.WriteLine(" </x:Print>"); sw.WriteLine(" </x:WorksheetOptions>"); sw.WriteLine(" </x:ExcelWorksheet>"); sw.WriteLine(" </x:ExcelWorksheets>"); sw.WriteLine("</x:ExcelWorkbook>"); sw.WriteLine("</xml>"); sw.WriteLine("<![endif]-->"); sw.WriteLine("</head>"); sw.WriteLine("<body>"); sw.WriteLine("<table>"); sw.WriteLine(" <tr>"); //根据数据库表 生成列标题 for (int i = 0; i < ds.Tables[0].Columns.Count; i++) { sw.WriteLine(" <td>" + ds.Tables[0].Columns[i]+ "</td>"); } sw.WriteLine(" </tr>"); //根据数据库表 生成列数据 for (int i = 0; i < ds.Tables[0].Rows.Count; i++) { sw.WriteLine(" <tr>"); for (int j = 0; j < ds.Tables[0].Columns.Count; j++) { sw.WriteLine(" <td>" + ds.Tables[0].Rows[i][j] + "</td>"); } sw.WriteLine(" </tr>"); } sw.WriteLine("</table>"); sw.WriteLine("</body>"); sw.WriteLine("</html>"); Response.Clear(); //应用缓存 Response.Buffer = true; Response.Charset = "utf-8"; //设置 文件的名称 Response.AppendHeader("Content-Disposition", "attachment;filename=" + fileName + ".xls"); //设置 内容格式。 Response.ContentType = "application/ms-excel"; //设置 输出编码 Response.ContentEncoding = System.Text.Encoding.GetEncoding("utf-8"); this.EnableViewState = false; System.Web.UI.HtmlTextWriter hw = new System.Web.UI.HtmlTextWriter(sw); //不允许翻页 gvOrders.AllowPaging = false; //不允许排序 gvOrders.AllowSorting = false; //绑定数据源 gvOrders.DataSource = ds.Tables[0]; gvOrders.DataBind(); //写入HtmlTextWriter gvOrders.RenderControl(hw); Response.Write(sw.ToString()); Response.End(); } }