IList<OrgSendStatData> ObjList=(IList<OrgSendStatData>) Session["ObjList"];

        string csv = "业务,活动,部门,本机构汇总总数,本机构汇总成功数,本机构汇总失败数,本机构及子机构汇总总数,本机构及子机构汇总成功数,本机构及子机构汇总失败数\r\n";
        StringBuilder sb = new StringBuilder();
        foreach (OrgSendStatData m in ObjList)
        {

            sb.Append(GetOperName(m.OperationId).Replace(',','，') + ",");
            sb.Append(GetMarkName(m.OperationMark) + ",");
            sb.Append(GetOrgName(m.OrgId) + ",");
            sb.Append(m.SingleOrgTotalCount.ToString() + ",");
            sb.Append(m.SingleOrgSuccessCount.ToString() + ",");
            sb.Append(m.SingleOrgDefeatCount.ToString() + ",");
            sb.Append(m.AllOrgTotalCount.ToString() + ",");
            sb.Append(m.AllOrgSuccessCount.ToString() + ",");
            sb.Append(m.AllOrgDefeatCount.ToString() + ",");
            sb.Append("\r\n");
        }
        csv += sb.ToString();
        //下面将文本输出为csv个数，可用excel直接打开
        Response.Clear();
        Response.Buffer = true;
        Response.Charset = "gb2312";
        //下面这行很重要， attachment 参数表示作为附件下载，您可以改成 online在线打开
        //filename=FileFlow.xls 指定输出文件的名称，注意其扩展名和指定文件类型相符，可以为：.doc .xls .txt 　.htm　　
        Response.AppendHeader("Content-Disposition", "attachment;filename=\"OrgCount.csv\"");
        Response.ContentEncoding = System.Text.Encoding.GetEncoding("gb2312");
        //Response.ContentType指定文件类型 可以为application/ms-excel 　 application/ms-word 　 application/ms-txt　 application/ms-html 　或其他浏览器可直接支持文档　
        Response.ContentType = "application/ms-excel";
        this.EnableViewState = false;
        System.IO.StringWriter oStringWriter = new System.IO.StringWriter();
        oStringWriter.Write(csv);
        oStringWriter.Flush();
        System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);
        this.RenderControl(oHtmlTextWriter);
        //this 表示输出本页，你也可以绑定datagrid,或其他支持obj.RenderControl()属性的控件　
        Response.Write(oStringWriter.ToString());
        Response.End();