Asp.net WebForm使用NPOI导出Excel

大家好，又见面了，我是你们的朋友全栈君。

废话不多说，直接上代码

public void ExportExcel()
        {
                string datefrom = Request.QueryString["datefrom"];
                string dateto = Request.QueryString["dateto"];
                string ID = Request.QueryString["ID"];

                Report_AgentModel model = new Report_AgentModel();

                string strSql = model.getExcelSql(datefrom, dateto, ID);
                string sort = "createtime desc";
                string sheetName = "Report_Agent";

                ExcelHelper help = new ExcelHelper();
                ExcelHelper.NpoiMemoryStream ms = help.ExportExcel(sheetName, strSql, sort);

                //输出Excel
                string filename = "Report_Agent_" + DateTime.Now.ToString("yyyyMMddHHmmss") + ".xlsx";

                Response.Clear();
                Response.ContentType = "application/vnd.ms-excel";
                Response.AddHeader("Content-Length", ms.Length.ToString());
                Response.AddHeader("Content-Disposition", string.Format("attachment;filename={0}",       Server.UrlEncode(filename)));

                Response.BinaryWrite(ms.GetBuffer());
                Response.Flush();
                Response.End();

        }

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