在SharePoint 2010中将网格导出到Excel的Excel页面上的Excel

Question

我正在尝试在SharePoint Web部件解决方案的ascx页面上导出网格以使其表现出色。 它引发以下错误

Control 'ctl00_ctl24_g_20574c20_e209_4887_ab02_83ee55a79fc5_ctl00_gdReport' of type 'GridView' must be placed inside a form tag with runat=server.

为避免此错误，我必须使用以下方法，但是编译器会引发错误，指出“找不到合适的方法来覆盖”

public override void VerifyRenderingInServerForm(Control control) { }

完整代码：

protected void btnExcelExport_Click(object sender, EventArgs e) 
{ 
   PrepareForExport(gdSharedReport); 
   ExportToExcel(); 
} 

private void ExportToExcel() 
{ 
   Response.Clear(); 
   Response.AddHeader("content-disposition", "attachment;filename=Report.xls"); 
   Response.Charset = String.Empty; 
   Response.ContentType = "application/ms-excel"; 
   StringWriter stringWriter = new StringWriter(); 
   HtmlTextWriter HtmlTextWriter = new HtmlTextWriter(stringWriter); 
   gdSharedReport.RenderControl(HtmlTextWriter); 
   Response.Write(stringWriter.ToString()); 
   Response.End(); 
}

private void PrepareForExport(Control ctrl) 
{ 
   //iterate through all the grid controls 
   foreach (Control childControl in ctrl.Controls) 
   { 
      //if the control type is link button, remove it 
      //from the collection 
      if (childControl.GetType() == typeof(LinkButton)) 
      { 
         ctrl.Controls.Remove(childControl); 
      } 
      //if the child control is not empty, repeat the process 
      // for all its controls 
      else if (childControl.HasControls()) 
      { 
         PrepareForExport(childControl); 
      } 
   }  
}

Answer 1

您的帖子说：

为避免此错误，我必须使用以下方法，但是编译器会引发错误，指出“找不到合适的方法来覆盖”

public override void VerifyRenderingInServerForm(Control control) { }

因此，我的猜测是您需要将替代添加到此VerifyRenderingInServerForm方法。