求解，datalist导出excel出现这样的问题

Question

“/”应用程序中的服务器错误。
--------------------------------------------------------------------------------类型“CheckBox”的控件“tab1_DataList1_ctl01_CheckBox1”必须放在具有 runat=server 的窗体标记内。 
说明: 执行当前 Web 请求期间，出现未处理的异常。请检查堆栈跟踪信息，以了解有关该错误以及代码中导致错误的出处的详细信息。 异常详细信息: System.Web.HttpException: 类型“CheckBox”的控件“tab1_DataList1_ctl01_CheckBox1”必须放在具有 runat=server 的窗体标记内。源错误: 
行 156:            System.IO.StringWriter oStringWriter = new System.IO.StringWriter(myCItrad);
行 157:            System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);
行 158:            this.DataList1.RenderControl(oHtmlTextWriter);
行 159:            Response.Write(oStringWriter.ToString());
行 160:            Response.End(); 
 源文件: E:\myweb\Web\Web\admin\control\tab.ascx.cs    行: 158 堆栈跟踪: 
[HttpException (0x80004005): 类型“CheckBox”的控件“tab1_DataList1_ctl01_CheckBox1”必须放在具有 runat=server 的窗体标记内。]
   System.Web.UI.Page.VerifyRenderingInServerForm(Control control) +2047423
   System.Web.UI.WebControls.CheckBox.Render(HtmlTextWriter writer) +52
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +25
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +121
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +22
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +130
   System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +20
   System.Web.UI.WebControls.WebControl.RenderContents(HtmlTextWriter writer) +7
   System.Web.UI.WebControls.DataListItem.RenderItemInternal(HtmlTextWriter writer, Boolean extractRows, Boolean tableLayout) +40
   System.Web.UI.WebControls.DataListItem.RenderItem(HtmlTextWriter writer, Boolean extractRows, Boolean tableLayout) +258
   System.Web.UI.WebControls.DataList.System.Web.UI.WebControls.IRepeatInfoUser.RenderItem(ListItemType itemType, Int32 repeatIndex, RepeatInfo repeatInfo, HtmlTextWriter writer) +58
   System.Web.UI.WebControls.RepeatInfo.RenderVerticalRepeater(HtmlTextWriter writer, IRepeatInfoUser user, Style controlStyle, WebControl baseControl) +1033
   System.Web.UI.WebControls.RepeatInfo.RenderRepeater(HtmlTextWriter writer, IRepeatInfoUser user, Style controlStyle, WebControl baseControl) +23
   System.Web.UI.WebControls.DataList.RenderContents(HtmlTextWriter writer) +396
   System.Web.UI.WebControls.BaseDataList.Render(HtmlTextWriter writer) +27
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +25
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +121
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +22
   Web.admin.control.tab.ImageButton7_Click(Object sender, ImageClickEventArgs e) in E:\myweb\Web\Web\admin\control\tab.ascx.cs:158
   System.Web.UI.WebControls.ImageButton.OnClick(ImageClickEventArgs e) +105
   System.Web.UI.WebControls.ImageButton.RaisePostBackEvent(String eventArgument) +115
   System.Web.UI.WebControls.ImageButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +7
   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +11
   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +33
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5087 
--------------------------------------------------------------------------------
版本信息: Microsoft .NET Framework 版本:2.0.50727.1873; ASP.NET 版本:2.0.50727.1879 

Answer 1

需要重写个方法
/// <summary>
    /// 此方法必重写，否则会出错
    /// </summary>
    /// <param name="control"></param>
    public override void VerifyRenderingInServerForm(Control control)
    {
    }