dataset导出成excel

//ds为数据源，filename为保存的文件名
publicvoidCreateExcel(DataSet ds,stringFileName)
{
//设置信息
HttpContext.Current.Response.Clear();
HttpContext.Current.Response.ContentType="application/vnd.ms-excel";
HttpContext.Current.Response.ContentEncoding=System.Text.Encoding.GetEncoding("GB2312");
HttpContext.Current.Response.Charset="GB2312";
//保存的文件名
HttpContext.Current.Response.AddHeader("content-disposition","attachment;filename="+HttpUtility.UrlEncode(FileName));
//保存excel的文件流
StringWriter stringWrite =newStringWriter();
HtmlTextWriter htmlWrite =newHtmlTextWriter(stringWrite);
//数据的ds
DataGrid dg =newDataGrid();
dg.DataSource= ds;
dg.DataBind();
dg.RenderControl(htmlWrite);
//输出数据
HttpContext.Current.Response.Write("<meta http-equiv=\"content-type\" content=\"application/ms-excel; charset=gb2312\"/>"+ stringWrite.ToString());
HttpContext.Current.Response.End();
}