HttpContext.Current.Response.AppendHeader( "Content-Disposition ", "attachment;filename=Excel.xls ");  
     HttpContext.Current.Response.Charset   = "UTF-8 ";          
     HttpContext.Current.Response.ContentEncoding   =System.Text.Encoding.Default;  
     HttpContext.Current.Response.ContentType   = "application/ms-excel ";//image/JPEG;text/HTML;image/GIF;vnd.ms-excel/msword  
     ctl.Page.EnableViewState   =false;        
     System.IO.StringWriter     tw   =   new   System.IO.StringWriter()   ;  
     System.Web.UI.HtmlTextWriter   hw   =   new   System.Web.UI.HtmlTextWriter   (tw);  
     ctl.RenderControl(hw);  
     HttpContext.Current.Response.Write(tw.ToString());  
     HttpContext.Current.Response.End();

------解决方案--------------------
 这个跟自己电脑上的excel组件有关系。你可以尝试直接将数据到处到excel


------解决方案--------------------
导出失败？有报什么错没？？？
加这个试试？
public override void VerifyRenderingInServerForm(Control control)
{

}

------解决方案--------------------
有报错么？？？
加这个试试？？
public override void VerifyRenderingInServerForm(Control control)
{

}

------解决方案--------------------
response.write会冲掉以前的东西。不弹出是正常的

------解决方案--------------------

string name = "Rpt" + DateTime.Now.ToString("yyyyMMdd") + ".xls";
Response.Clear();
Response.Buffer = false;
Response.Charset = "GB2312";
Response.AppendHeader("Content-Disposition", "attachment;filename=" + name);
Response.ContentEncoding = System.Text.Encoding.GetEncoding("UTF-8");
Response.ContentType = "application/ms-excel";
Response.Write("<meta http-equiv=Content-Type content=\"text/html; charset=UTF-\">");
StringWriter sw = new StringWriter();
HtmlTextWriter htw = new HtmlTextWriter(sw);
gv.RenderControl(htw);
Response.Write(sw.ToString());
Response.End();


这样呢？？？

------解决方案--------------------

导出按钮是不是在UpdatePanel中？