private void exportData(HttpContext context) { try { string fileName = "postion.txt"; string RealFile = context.Server.MapPath("~/PosFile/" + fileName); using (var ctx = new RSServiceDBEntities1()) { var db = ctx.PostionUpdate.Where(m => m.TYPE.Equals("社會保險經辦機構") && m.STATUS.Equals("已錄用")); StreamWriter sw = new StreamWriter(RealFile); foreach (var ps in db) { string strLine = ps.STDM + ',' + ps.TYPE + ',' + ps.X + ',' + ps.Y; sw.WriteLine(strLine); } sw.Close(); } //string RealFile = context.Server.MapPath("d:\\hsx\\" + fileName); context.Response.Buffer = true; context.Response.Clear(); context.Response.ContentType = "application/octet-stream"; string downFile = System.IO.Path.GetFileName(fileName); string EncodeFileName = HttpUtility.UrlEncode(downFile, System.Text.Encoding.UTF8);//防止中文出現亂碼 context.Response.AddHeader("Content-Disposition", "attachment;filename=" + EncodeFileName + ";"); context.Response.WriteFile(RealFile);//返回檔案資料給客戶端下載 //context.Response.Flush(); context.Response.End(); } catch(Exception ex) { } }