DataGrid导出Excel

用sql生成数据库集，绑定在 一个datagrid上,然后这样：

public   void  ToExcel(System.Web.UI.Control ctl)  
{
     //  HttpContext.Current.Response.Charset ="GB2312";    
    HttpContext.Current.Response.Charset  = "" ;
    HttpContext.Current.Response.AppendHeader( " Content-Disposition " , " attachment;filename=money.xls " );
                
    HttpContext.Current.Response.ContentEncoding  = System.Text.Encoding.GetEncoding( " GB2312 " ); 
    HttpContext.Current.Response.ContentType  = " application/ms-excel " ; // image/JPEG;text/HTML;image/GIF;vnd.ms-excel/msword
    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();
}

用法:ToExcel(datagrid1);
注意，不要分页，分页会不好用。