只能在执行 Render() 的过程中调用 RegisterForEventValidation

 

“/Website1”应用程序中的服务器错误。

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只能在执行 Render() 的过程中调用 RegisterForEventValidation；

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.InvalidOperationException: 只能在执行 Render() 的过程中调用 RegisterForEventValidation；

源错误:

行 41:         if (gvWorkTicketRecord.Rows.Count > 0)
行 42:         {

行 43: objExportToFile.ToExcel(gvWorkTicketRecord, "WorkTicketReports");

行 44:         }
行 45:         else

源文件: d:\Projects\Engtek\System\Report\Manufacture\WorkTicketReports.aspx.cs    行: 43

堆栈跟踪:

[InvalidOperationException: 只能在执行 Render() 的过程中调用 RegisterForEventValidation；]
   System.Web.UI.ClientScriptManager.RegisterForEventValidation(String uniqueId, String argument) +8642059
   System.Web.UI.WebControls.CheckBox.RenderInputTag(HtmlTextWriter writer, String clientID, String onClick) +237
   System.Web.UI.WebControls.CheckBox.Render(HtmlTextWriter writer) +179
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +99
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +134
   System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +19
   System.Web.UI.WebControls.TableCell.RenderContents(HtmlTextWriter writer) +57
   System.Web.UI.WebControls.WebControl.Render(HtmlTextWriter writer) +32
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +99
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +134
   System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +19
   System.Web.UI.WebControls.WebControl.RenderContents(HtmlTextWriter writer) +10
   System.Web.UI.WebControls.WebControl.Render(HtmlTextWriter writer) +32
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +99
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25
   System.Web.UI.WebControls.Table.RenderContents(HtmlTextWriter writer) +206
   System.Web.UI.WebControls.WebControl.Render(HtmlTextWriter writer) +32
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +99
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +134
   System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +19
   System.Web.UI.WebControls.WebControl.RenderContents(HtmlTextWriter writer) +10
   System.Web.UI.WebControls.GridView.Render(HtmlTextWriter writer, Boolean renderPanel) +224
   System.Web.UI.WebControls.GridView.Render(HtmlTextWriter writer) +33
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +99
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25
   Insus.NET.ExportToFile.ExportFileParse(WebControl webCtrl, String fileName, String typeName) +299
   Insus.NET.ExportToFile.ExportToExcelFile(WebControl webCtrl, String fileName) +76
   Insus.NET.ExportToFile.ToExcel(WebControl webCtrl, String fileName) +41
   System_Report_Manufacture_WorkTicketReports.btnReportToExcel_Click(Object sender, EventArgs e) in d:\Projects\Engtek\System\Report\Manufacture\WorkTicketReports.aspx.cs:43
   System.Web.UI.WebControls.Button.OnClick(EventArgs e) +111
   System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +110
   System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +36
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1565

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版本信息: Microsoft .NET Framework 版本:2.0.50727.3053; ASP.NET 版本:2.0.50727.3053

解决方法，在Page中添加一个属性EnableEventValidation，设定值为false即可。

<%@ Page Language="C#" EnableEventValidation="false" ...