Как правильно назначить мой getPur() метод для Transaction.PurchasedItems Мне нужен набор результатов, который представляет собой комбинацию Transaction и PurchasedItems
Я ищу результат такой же, как на изображении.Прямо сейчас я получаю желаемый результат с созданием новой модели, которая содержит все столбцы.но возможно ли это без создания новой модели.
То, что я пробовал, ниже , но яполучая ошибку в этой строке
VM.Transaction.PurchasedItems = getPur().ToList().Where(t => t.CustomerId == id).ToList();
Ссылка на объект не установлена для экземпляра объекта.
Пожалуйста, помогите мне сделать этокомпактный.
Модели:
public class Transaction
{
public int TransactionId { get; set; }
public string Progress { get; set; }
public int ProgressId { get; set; }
public string Status { get; set; }
public int StatusId { get; set; }
public decimal Net { get; set; }
public DateTime Date_ { get; set; }
public virtual ICollection<PurchasedItem> PurchasedItems { get; set; }
}
public class PurchasedItem
{
public int CustomerId { get; set; }
string Product { get; set; }
decimal Total { get; set; }
public string ProductRemarks { get; set; }
}
Контроллер
public ActionResult History(int? id)
{
CustomerViewModel VM = new CustomerViewModel();
VM.Transactions = getTransactions().Where(t => t.CustomerId == id);
VM.Transaction.PurchasedItems = getPur().Where(t => t.CustomerId == id).ToList();
return View(VM);
}
public IEnumerable<PurchasedItem> getPur()
{
var prod = (from c in db.Customers.Include(c => c.CUSTOMERTYPE)
join ch in db.CUSTOMERHEADs.Include(ch => ch.CustomerDatas).Include(ch => ch.Customer).Include(ch => ch.CustomerProgress).Include(ch => ch.CustomerStatu) on c.Id equals ch.CustomerId into l2
from ch in l2.DefaultIfEmpty()
join sm in db.SalesMen on ch.SalesManId equals sm.MasterId into l1
from sm in l1.DefaultIfEmpty()
join cd in db.CustomerDatas on ch.id equals cd.Headid into l3
from cd in l3.DefaultIfEmpty()
select new
{
cid = c.Id,
prod = cd.ProductCode,
price = cd.Price,
qty = cd.Qty,
disc = cd.Disc,
amount = cd.Amount,
remarks = cd.Remarks,
progressid = ch.CustomerProgress == null ? 0 : ch.CustomerProgress.Id,
});
var details = new List<PurchasedItem>();
foreach (var t in prod)
{
details.Add(new PurchasedItem()
{
CustomerId = t.cid,
ProgressId = t.progressid,
Product = t.prod,
Qty = Convert.ToDecimal(t.qty),
Price = Convert.ToDecimal(t.price),
Disc = Convert.ToDecimal(t.disc),
Total = Convert.ToDecimal(t.amount),
ProductRemarks = t.remarks,
});
}
return details;
}
ОБНОВЛЕНИЕ
Исправление, которое я сделал:
public ActionResult History(int? id)
{
var details = getTransactions().Where(t => t.CustomerId == id);
return View(details);
}
public IEnumerable<Transaction> getTransactions()
{
var cust = (from c in db.Customers.Include(c => c.CUSTOMERTYPE)
join ch in db.CUSTOMERHEADs.Include(ch => ch.Customer).Include(ch => ch.CustomerProgress).Include(ch => ch.CustomerStatu)
.Include(ch => ch.CustomerDatas) on c.Id equals ch.CustomerId into l2
from ch in l2.DefaultIfEmpty()
join sm in db.SalesMen on ch.SalesManId equals sm.MasterId into l1
from sm in l1.DefaultIfEmpty()
select new
{
hid = ch==null?0:ch.id,
customerid = c.Id,
voucherno = ch.VoucherNo,
progress = ch.CustomerProgress.Status,
date = ch.Date_==null?DateTime.MinValue : ch.Date_,
appointmentDate = ch.Date2_,
status = ch.CustomerStatu.Status,
sales = sm.Name,
notes = ch.Notes,
progressid = ch.CustomerProgress == null?0 :ch.CustomerProgress.Id,
cd = ch.CustomerDatas.ToList(),
});
var details = new List<Transaction>();
foreach (var t in cust)
{
details.Add(new Transaction()
{
CustomerId = t.customerid,
voucherno = t.voucherno,
Progress = t.progress,
ProgressId = t.progressid,
Date_ = t.date,
Date2_ = t.appointmentDate,
Status = t.status,
Salesman = t.sales,
AppointmentRemarks = t.notes,
PurchasedItems = getPurchase().Where(m => m.Headid == t.hid).ToList(),
});
}
return details;
}
public IEnumerable<PurchasedItem> getPurchase()
{
var prod = (from c in db.Customers.Include(c => c.CUSTOMERTYPE)
join ch in db.CUSTOMERHEADs.Include(ch => ch.CustomerDatas).Include(ch => ch.Customer).Include(ch => ch.CustomerProgress).Include(ch => ch.CustomerStatu) on c.Id equals ch.CustomerId into l2
from ch in l2.DefaultIfEmpty()
join sm in db.SalesMen on ch.SalesManId equals sm.MasterId into l1
from sm in l1.DefaultIfEmpty()
join cd in db.CustomerDatas on ch.id equals cd.Headid into l3
from cd in l3.DefaultIfEmpty()
select new
{
cid = c.Id,
prod = cd.ProductCode,
price = cd.Price,
qty = cd.Qty,
disc = cd.Disc,
amount = cd.Amount,
remarks = cd.Remarks,
progressid = ch.CustomerProgress == null ? 0 : ch.CustomerProgress.Id,
hid = cd==null?0:cd.Headid,
});
var details = new List<PurchasedItem>();
try
{
foreach (var t in prod)
{
details.Add(new PurchasedItem()
{
Headid = Convert.ToInt32(t.hid),
CustomerId = t.cid,
ProgressId = t.progressid,
Product = t.prod,
Qty = Convert.ToDecimal(t.qty),
Price = Convert.ToDecimal(t.price),
Disc = Convert.ToDecimal(t.disc),
Total = Convert.ToDecimal(t.amount),
ProductRemarks = t.remarks,
});
}
}
catch (Exception ex)
{
throw ex;
}
return details;
}