C# 导出excel文件未在服务器中打开，但在localhost中excel文件已正确打开

我想从asp.net mvc中的数据中获取Excel文件报告， 但当我在本地主机上运行代码时，它会正确地给我一个文件，并正确地打开文件。 但当我在服务器中获取代码并导出Excel文件时，下载文件后，我单击打开，但文件格式不正确，无法打开，这是一个错误。我很困惑。请帮帮我。我的代码：

public FileResult ExportOrders(string sortOrder, string title, string orderStatus
        , string sellerTrackCode, string paymentType, string settlementType, string sellerId, string excelDocumentId,
        string postmanId, string sellerCustomerName, string submittedDate, string fromSubmittedDate, string tillSubmittedDate,
        string fromDeliveredDate, string tillDeliveredDate, string fromPickUpDate, string tillPickUpDate, string fromId,
        string tillId, int? menuType, int? page, int? pageSize)
    {
        var query = _orderRepository.AsQueryable();
        var currentUser = User.Identity.GetUserName();

        if (currentUser != string.Empty)
        {
            var dbUser = _personRoleRepository.AsQueryable().FirstOrDefault(x => x.Person.UserName == currentUser);
            if (dbUser != null)
            {
                List<SellerCustomer> allSellerCustomers = new List<SellerCustomer>();
                var role = dbUser.Role;
                if (role.Title == "Seller")
                {
                    var seller = _sellerRepository.AsQueryable().First(x => x.PersonId == dbUser.PersonId);
                    query = query.Where(x => x.SellerId == seller.Id);
                }
            }
        }

        if (menuType == (int)MenuType.UnDoneOrders)
        {
            query = query.Where(x => x.OrderStatus == (byte)OrderStatus.Submitted || x.OrderStatus == (byte)OrderStatus.PayedByUser ||
                    x.OrderStatus == (byte)OrderStatus.TransmitToPort);
            ViewBag.menuType = MenuType.UnDoneOrders;
        }

        if (menuType == (int)MenuType.OpenOrders)
        {
            query = query.Where(x => x.OrderStatus == (byte)OrderStatus.WaitingForPostmanAssignment);
            ViewBag.menuType = MenuType.OpenOrders;
        }
        if (menuType == (int)MenuType.InProgressOrders)
        {
            query = query.Where(x => x.PostmanId != null && x.OrderStatus != (int)OrderStatus.DeliverToCustomer
                                                             && x.OrderStatus != (int)OrderStatus.ReturnedOrder);
            ViewBag.menuType = MenuType.InProgressOrders;
        }

        if (!String.IsNullOrEmpty(submittedDate))
        {
            DateTime date = CalendarHelper.GetGregorianDateTime(submittedDate);
            query = query.Where(s => s.SubmittedDate.Equals(date));
        }
        if (!String.IsNullOrEmpty(orderStatus))
        {
            var status = (byte)EnumsConverter.GetValueFromDescription<OrderStatus>(orderStatus);
            query = query.Where(s => s.OrderStatus.Equals(status));
        }
        if (!String.IsNullOrEmpty(title))
        {
            query = query.Where(s => s.Title.Contains(title));
        }
        if (!String.IsNullOrEmpty(sellerTrackCode))
        {
            query = query.Where(s => s.SellerTrackCode.Contains(sellerTrackCode));
        }
        if (!String.IsNullOrEmpty(paymentType))
        {
            var type = (byte)EnumsConverter.GetValueFromDescription<PaymentType>(paymentType);

            query = query.Where(s => s.PaymentType.Equals(type));
        }
        if (!String.IsNullOrEmpty(settlementType))
        {
            var settlement = (byte)EnumsConverter.GetValueFromDescription<SettlementType>(settlementType);
            query = query.Where(s => s.SettlementType.Equals(settlement));
        }
        if (!String.IsNullOrEmpty(sellerId))
        {
            var selId = Convert.ToInt32(sellerId);
            query = query.Where(s => s.SellerId == selId);
        }
        if (!String.IsNullOrEmpty(excelDocumentId))
        {
            var selId = Convert.ToInt32(excelDocumentId);
            query = query.Where(s => s.ExcelDocumentId == selId);
        }
        if (!String.IsNullOrEmpty(sellerCustomerName))
        {
            query = query.Where(s => s.SellerCustomerName.Contains(sellerCustomerName));
        }
        if (!String.IsNullOrEmpty(postmanId))
        {
            var selId = Convert.ToInt32(postmanId);
            query = query.Where(s => s.PostmanId == selId);
        }
        if (!String.IsNullOrEmpty(fromSubmittedDate))
        {
            var gregor = CalendarHelper.GetGregorianDate(fromSubmittedDate);
            query = query.Where(s => s.SubmittedDate >= gregor);
        }
        if (!String.IsNullOrEmpty(tillSubmittedDate))
        {
            var gregor = CalendarHelper.GetGregorianEndDate(tillSubmittedDate);
            query = query.Where(s => s.SubmittedDate <= gregor);
        }
        if (!String.IsNullOrEmpty(fromPickUpDate))
        {
            var gregor = CalendarHelper.GetGregorianDateTime(fromPickUpDate);
            query = query.Where(s => s.PickUpDate >= gregor);
        }
        if (!String.IsNullOrEmpty(tillPickUpDate))
        {
            var gregor = CalendarHelper.GetGregorianDateTime(tillPickUpDate);
            query = query.Where(s => s.PickUpDate <= gregor);
        }
        if (!String.IsNullOrEmpty(fromId))
        {
            var x = Convert.ToInt64(fromId);
            query = query.Where(s => s.Id >= x);
        }
        if (!String.IsNullOrEmpty(tillId))
        {
            var x = Convert.ToInt64(tillId);
            query = query.Where(s => s.Id <= x);
        }
        if (!String.IsNullOrEmpty(fromDeliveredDate))
        {
            var gregor = CalendarHelper.GetGregorianDate(fromDeliveredDate);
            query = query.Where(s => s.DeliveredDate >= gregor);
        }
        if (!String.IsNullOrEmpty(tillDeliveredDate))
        {
            var gregor = CalendarHelper.GetGregorianEndDate(tillDeliveredDate);
            query = query.Where(s => s.DeliveredDate <= gregor);
        }

        sortOrder = String.IsNullOrEmpty(sortOrder) ? SortKeys.PickupDateDesc : sortOrder;

        switch (sortOrder)
        {
            case SortKeys.SubmittedDate:
                query = query.OrderBy(x => x.SubmittedDate).ThenBy(x => x.Id);
                break;
            case SortKeys.SubmittedDateDesc:
                query = query.OrderByDescending(x => x.SubmittedDate).ThenBy(x => x.Id);
                break;
            case SortKeys.PickupDate:
                query = query.OrderBy(x => x.PickUpDate).ThenBy(x => x.Id);
                break;
            case SortKeys.PickupDateDesc:
                query = query.OrderByDescending(x => x.PickUpDate).ThenBy(x => x.Id);
                break;
            case SortKeys.OrderStatus:
                query = query.OrderBy(x => x.OrderStatus).ThenBy(x => x.Id);
                break;
            case SortKeys.OrderStatusDesc:
                query = query.OrderByDescending(x => x.OrderStatus).ThenBy(x => x.Id);
                break;
            case SortKeys.Title:
                query = query.OrderBy(x => x.Title).ThenBy(x => x.Id);
                break;
            case SortKeys.TitleDesc:
                query = query.OrderByDescending(x => x.Title).ThenBy(x => x.Id);
                break;
            case SortKeys.SellerTrackCode:
                query = query.OrderBy(x => x.SellerTrackCode).ThenBy(x => x.Id);
                break;
            case SortKeys.SellerTrackCodeDesc:
                query = query.OrderByDescending(x => x.SellerTrackCode).ThenBy(x => x.Id);
                break;
            case SortKeys.SellerId:
                query = query.OrderBy(x => x.Seller.StoreName).ThenBy(x => x.Id);
                break;
            case SortKeys.SellerIdDesc:
                query = query.OrderByDescending(x => x.Seller.StoreName).ThenBy(x => x.Id);
                break;
            case SortKeys.SellerCustomerName:
                query = query.OrderBy(x => x.SellerCustomerName).ThenBy(x => x.Id);
                break;
            case SortKeys.SellerCustomerNameDesc:
                query = query.OrderByDescending(x => x.SellerCustomerName).ThenBy(x => x.Id);
                break;
            case SortKeys.PostmanId:
                query = query.OrderBy(x => x.PostmanId).ThenBy(x => x.Id);
                break;
            case SortKeys.PostmanIdDesc:
                query = query.OrderByDescending(x => x.PostmanId).ThenBy(x => x.Id);
                break;
        }

        var orders = query.ToList();

        var path = Path.Combine(Server.MapPath("~/App_Data/"), "orderExcel.xlsx");

        if (orders.Count > 0)
        {
            using (var excelPackage = new ExcelPackage(new FileInfo(path)))
            {
                var ws = excelPackage.Workbook.Worksheets.FirstOrDefault(x => x.Name == "sheet1");
                if (ws != null)
                {
                    excelPackage.Workbook.Worksheets.Delete(ws);
                }
                excelPackage.Workbook.Worksheets.Add("sheet1");

                var workSheet = excelPackage.Workbook.Worksheets[1];
                workSheet.Cells.Style.HorizontalAlignment = OfficeOpenXml.Style.ExcelHorizontalAlignment.Center;
                workSheet.DefaultColWidth = 15;
                workSheet.Column(2).Width = 20;
                workSheet.Column(4).Width = 20;
                workSheet.Column(5).Width = 30;
                workSheet.Column(6).Width = 20;
                workSheet.Column(7).Width = 20;
                workSheet.Column(8).Width = 20;
                workSheet.Column(11).Width = 30;
                workSheet.Column(12).Width = 30;
                workSheet.Column(13).Width = 40;
                workSheet.Cells["I1:J1"].Merge = true;
                workSheet.View.RightToLeft = true;

                workSheet.Cells.Style.WrapText = true;

                workSheet.Cells[1, 9].Value = "هزینه های قابل پرداخت گیرنده";
                workSheet.Cells[2, 1].Value = "ردیف";
                workSheet.Cells[2, 2].Value = "شماره ارجاع";
                workSheet.Cells[2, 3].Value = "نوع مرسوله";
                workSheet.Cells[2, 4].Value = "نام گیرنده";
                workSheet.Cells[2, 5].Value = "آدرس گیرنده";
                workSheet.Cells[2, 6].Value = "شماره همراه گیرنده";
                workSheet.Cells[2, 7].Value = "تلفن گیرنده";
                workSheet.Cells[2, 8].Value = "تاریخ دریافت سفارش";
                workSheet.Cells[2, 9].Value = "وجه کالا";
                workSheet.Cells[2, 10].Value = "هزینه حمل";
                workSheet.Cells[2, 11].Value = "وضعیت سفارش";
                workSheet.Cells[2, 12].Value = "توضیحات";
                workSheet.Cells[2, 13].Value = "کد رهگیری";

                for (var index = 0; index < orders.Count; index++)
                {
                    var order = orders[index];
                    workSheet.Cells[index + 3, 1].Value = index + 1;
                    workSheet.Cells[index + 3, 2].Value = order.SellerTrackCode;
                    workSheet.Cells[index + 3, 3].Value = order.Title;
                    workSheet.Cells[index + 3, 4].Value = order.SellerCustomerName ?? string.Empty;
                    workSheet.Cells[index + 3, 5].Value = order.OrderAddress;
                    workSheet.Cells[index + 3, 6].Value = order.Mobile;
                    workSheet.Cells[index + 3, 7].Value = order.Tel;
                    workSheet.Cells[index + 3, 8].Value = order.PickUpDate.GetPersianDate();
                    workSheet.Cells[index + 3, 9].Value = order.OrderValue;
                    workSheet.Cells[index + 3, 10].Value = order.DeliveryCost;
                    workSheet.Cells[index + 3, 11].Value = EnumsConverter.GetDescriptionFromValue((OrderStatus)order.OrderStatus);
                    workSheet.Cells[index + 3, 12].Value = order.Description;
                    workSheet.Cells[index + 3, 13].Value = order.Id;
                }
                excelPackage.Save();
            }
        }
        byte[] fileBytes = System.IO.File.ReadAllBytes(path);
        string fileName = "orderExcel.xlsx";
        return File(fileBytes, System.Net.Mime.MediaTypeNames.Application.Octet, fileName);
    }
}

公共文件结果导出订单（字符串排序器、字符串标题、字符串订单状态
，字符串sellerTrackCode，字符串paymentType，字符串结算类型，字符串sellerId，字符串excelDocumentId，
字符串postmanId、字符串sellerCustomerName、字符串submittedDate、字符串fromSubmittedDate、字符串tillSubmittedDate、，
字符串fromDeliveredDate，字符串tillDeliveredDate，字符串fromPickUpDate，字符串tillPickUpDate，字符串fromId，
字符串tillId、int？菜单类型、int？页面、int？页面大小）
{
var query=_orderRepository.AsQueryable（）；
var currentUser=User.Identity.GetUserName（）；
if（currentUser！=string.Empty）
{
var dbUser=\u personRoleRepository.AsQueryable（）.FirstOrDefault（x=>x.Person.UserName==currentUser）；
if（dbUser！=null）
{
List allSellerCustomers=新列表（）；
var-role=dbUser.role；
如果（role.Title==“卖方”）
{
var seller=\u sellerRepository.AsQueryable（）.First（x=>x.PersonId==dbUser.PersonId）；
query=query.Where（x=>x.SellerId==seller.Id）；
}
}
}
if（menuType==（int）menuType.UnDoneOrders）
{
query=query.Where（x=>x.OrderStatus==（字节）OrderStatus.Submitted | | x.OrderStatus==（字节）OrderStatus.PayedByUser||
x、 OrderStatus==（字节）OrderStatus.TransmitToPort）；
ViewBag.menuType=menuType.UnDoneOrders；
}
if（menuType==（int）menuType.OpenOrders）
{
query=query.Where（x=>x.OrderStatus==（字节）OrderStatus.waitingforpostmanasignment）；
ViewBag.menuType=menuType.OpenOrders；
}
if（menuType==（int）menuType.InProgressOrders）
{
query=query.Where（x=>x.PostmanId！=null&&x.OrderStatus！=（int）OrderStatus.DeliverToCustomer
&&x.OrderStatus！=（int）OrderStatus.ReturnedOrder）；
ViewBag.menuType=menuType.InProgressOrders；
}
如果（！String.IsNullOrEmpty（submittedDate））
{
DateTime日期=CalendarHelper.GetGregorianDateTime（submittedDate）；
query=query.Where（s=>s.SubmittedDate.Equals（date））；
}
如果（！String.IsNullOrEmpty（orderStatus））
{
变量状态=（字节）EnumsConverter.GetValueFromDescription（orderStatus）；
query=query.Where（s=>s.OrderStatus.Equals（status））；
}
如果（！String.IsNullOrEmpty（title））
{
query=query.Where（s=>s.Title.Contains（Title））；
}
如果（！String.IsNullOrEmpty（sellerTrackCode））
{
query=query.Where（s=>s.SellerTrackCode.Contains（SellerTrackCode））；
}
如果（！String.IsNullOrEmpty（paymentType））
{
变量类型=（字节）EnumsConverter.GetValueFromDescription（paymentType）；
query=query.Where（s=>s.PaymentType.Equals（type））；
}
如果（！String.IsNullOrEmpty（结算类型））
{
变量结算=（字节）EnumsConverter.GetValueFromDescription（结算类型）；
query=query.Where（s=>s.SettlementType.Equals（结算））；
}
如果（！String.IsNullOrEmpty（sellerId））
{
var selId=Convert.ToInt32（sellerId）；
query=query.Where（s=>s.SellerId==selId）；
}
如果（！String.IsNullOrEmpty（excelDocumentId））
{
var selId=Convert.ToInt32（excelDocumentId）；
query=query.Where（s=>s.ExcelDocumentId==selId）；
}
如果（！String.IsNullOrEmpty（sellerCustomerName））
{
query=query.Where（s=>s.SellerCustomerName.Contains（SellerCustomerName））；
}
如果（！String.IsNullOrEmpty（postmanId））
{
var selId=Convert.ToInt32（postmanId）；
query=query.Where（s=>s.PostmanId==selId）；
}
如果（！String.IsNullOrEmpty（fromSubmittedDate））
{
var gregor=CalendarHelper.GetGregorianDate（fromSubmittedDate）；
query=query.Where（s=>s.SubmittedDate>=gregor）；
}
如果（！String.IsNullOrEmpty（tillSubmittedDate））
{
var gregor=CalendarHelper.GetGregorianEndDate（tillSubmittedDate）；
query=query.Where（s=>s.SubmittedDate s.PickUpDate>=gregor）；
}
如果（！String.IsNullOrEmpty（tillPickUpDate））
{
var gregor=CalendarHelper.GetGregorianDateTime（tillPickUpDate）；
query=query.Where（s=>s.PickUpDate s.Id>=x）；
}
如果（！String.IsNullOrEmpty（tillId））
{
var x=转换为64（tillId）；
query=query.Where（s=>s.Id s.DeliveredDate>=gregor）；
}
如果（！String.IsNullOrEmpty（tillDeliveredDate））
{
var gregor=CalendarHelper.GetGregorianEndDate（tillDeliveredDate）；
query=query.Where（s=>s.DeliveredDate x.SubmittedDate）。然后by（x=>x.Id）；
打破
案例SortKeys.SubmittedDateDesc：
query=query.OrderByDescending（x=>x.SubmittedDate），然后是by（x=>x.Id）；
打破
案例SortKeys.PickupDate：
query=query.OrderBy（x=>x.PickUpDate）.ThenBy（x=>x.Id）；
打破
案例SortKeys.PickUpdateDisc：
query=query.OrderByDescending（x=>x.PickUpDate）。然后是by（x=
byte[] fileBytes = Encoding.UTF8.GetBytes(File.ReadAllText(path));