C# 将控件内容导出到 Excel

Response.Clear(); 
   Response.Buffer= true; 
   Response.Charset="utf-8";
   Response.AppendHeader("Content-Disposition","attachment;filename=ASMCRPT.xls");
   Response.ContentEncoding=System.Text.Encoding.GetEncoding("utf-8");
   Response.ContentType = "application/ms-excel";
   //this.EnableViewState = false;

   System.IO.StringWriter oStringWriter = new System.IO.StringWriter(); 
   System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter); 

   this.dtgForExcel.RenderControl(oHtmlTextWriter);    
   
   Response.Write(oStringWriter.ToString());
   Response.End();