StringBuilder sb = new StringBuilder(); 
StringWriter sw = new StringWriter(sb); 
HtmlTextWriter htw = new HtmlTextWriter(sw); 
Page page = new Page(); 
HtmlForm form = new HtmlForm(); 
GVLinkman.EnableViewState = false; 
page.EnableEventValidation = false; 
page.DesignerInitialize(); 
page.Controls.Add(form); 
form.Controls.Add(GVLinkman); 
page.RenderControl(htw); 
Response.Clear(); 
Response.Buffer = true; 
Response.ContentType = "application/vnd.ms-excel"; 
Response.AddHeader("Content-Disposition", "attachment;filename=data.xls"); 
Response.Charset = "UTF-8"; 
Response.ContentEncoding = Encoding.Default; 
Response.Write(sb.ToString()); 
Response.End(); 
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