请大家帮个忙 谢谢了
------解决方案--------------------------------------------------------
public static void ToExcel(System.Web.UI.Control ctl,string FileName)
{
HttpContext.Current.Response.Charset = "UTF-8 ";
HttpContext.Current.Response.ContentEncoding =System.Text.Encoding.Default;
HttpContext.Current.Response.ContentType = "application/ms-excel ";
HttpContext.Current.Response.AppendHeader( "Content-Disposition ", "attachment;filename= "+ " "+FileName+ ".xls ");
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();
}