asp.net 生成csv文件

System.Text.StringBuilder sb = new System.Text.StringBuilder();

//sb 中定义生成.csv文件的格式 中间以"\t"分开

 Response.AddHeader("Content-Disposition", "attachment; filename=vhost" + string.Format("{0:yyyyMMddhhmmss}", DateTime.Now) + ".xls");
        Response.ContentType = "application/text";
        Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");
        Response.Write(sb);
        Response.End();