我正在嘗試導(dǎo)出顯示在窗口（模式）中的網(wǎng)格視圖，但它導(dǎo)出整個(gè)頁面。public void ExportToXLS(GridView gv){    gv.AllowPaging = false;    HttpContext.Current.Response.Buffer = true;    HttpContext.Current.Response.ClearContent();    HttpContext.Current.Response.ClearHeaders();    HttpContext.Current.Response.Clear();    HttpContext.Current.Response.AddHeader("content-disposition", "attachment;filename=GridView.xls");    HttpContext.Current.Response.ContentType = "application/vnd.ms-excel";    System.IO.StringWriter stringWrite = new System.IO.StringWriter();    System.Web.UI.HtmlTextWriter htmlWrite = new HtmlTextWriter(stringWrite);    GridView gvExp = new GridView();    gvExp = gv;    gvExp.RenderControl(htmlWrite);    HttpContext.Current.Response.Write(stringWrite.ToString());    HttpContext.Current.Response.Flush();    HttpContext.Current.Response.Close();    HttpContext.Current.Response.End();}