Something code used.

DataView Export To Excel 2003

Response.Clear();
        Response.Buffer  =   true ;
        Response.Charset  =   " GB2312 " ;
        Response.AppendHeader( " Content-Disposition " ,  " attachment;filename=New Excel.xls " );
         //  如果设置为 GetEncoding("GB2312");导出的文件将会出现乱码！！！
        Response.ContentEncoding  =  System.Text.Encoding.UTF7;
        Response.ContentType  =   " application/ms-excel " ; // 设置输出文件类型为excel文件。 
        System.IO.StringWriter oStringWriter  =   new  System.IO.StringWriter();
        System.Web.UI.HtmlTextWriter oHtmlTextWriter  =   new  System.Web.UI.HtmlTextWriter(oStringWriter);
         this .GridView1.RenderControl(oHtmlTextWriter);
        Response.Output.Write(oStringWriter.ToString());
        Response.Flush();
        Response.End();