и последний - ваш основной метод возврата сбора клиентов:
public List<Customer> GetCustomersList(int unitId)
{
var result = new List<Customer>();
var data = db.Customers.Select(s => s).Where(w => w.UnitId == unitId && !_list.Contains(w.CustomerName));
if (data != null && data.Count > 0)
{
foreach (var row in data)
{
var customer = new Customer();
customer.UnitId = row.UnitId;
customer.CustomerId = row.CustomerId;
customer.MemoDate = row.MemoMasters.FirstOrDefault().MemoDate;
customer.CustomerName = row.CustomerName;
customer.SalesManName = row.SalesMan.SalesManName;
customer.SalesManagerName = row.SalesMan.SalesManager.SalesManagerName;
customer.DistrictName = row.Upazila.District.DistrictName;
// Previous Year
customer.PreviousYearOpeningMemoDiscount = GetFilteredCount<MemoMasters>(row.MemoMasters, "MemoDate", "MemoDiscount", dateFrom: aYearPreviousFromDate, inequalityFrom: Inequality.LessThan);
customer.PreviousYearOpeningGatOther = GetFilteredCount<MemoMasters>(row.MemoMasters, "MemoDate", "GatOther", dateFrom: aYearPreviousFromDate, inequalityFrom: Inequality.LessThan);
customer.PreviousYearOpeningGrossSales = GetFilteredCount<MemoMasters>(row.MemoMasters, "MemoDate", "MemoCost", dateFrom: aYearPreviousFromDate, inequalityFrom: Inequality.LessThan);
customer.PreviousYearQuantity = GetFilteredCount<MemoMasters>(row.MemoMasters, "MemoDate", "Quantity", dateFrom: aYearPreviousFromDate, inequalityFrom: Inequality.GreatherOrEqualThan, dateTo: aYearPreviousToDate, inequalityTo: Inequality.LessOrEqualThan);
customer.PreviousYearQuantityConverted = GetFilteredCount<MemoMasters>(row.MemoMasters, "MemoDate", "QuantityConverted", dateFrom: aYearPreviousFromDate, inequalityFrom: Inequality.GreatherOrEqualThan, dateTo: aYearPreviousToDate, inequalityTo: Inequality.LessOrEqualThan);
customer.PreviousYearMemoDiscount = GetFilteredCount<MemoMasters>(row.MemoMasters, "MemoDate", "MemoDiscount", dateFrom: aYearPreviousFromDate, inequalityFrom: Inequality.GreatherOrEqualThan, dateTo: aYearPreviousToDate, inequalityTo: Inequality.LessOrEqualThan);
customer.PreviousYearGatOther = GetFilteredCount<MemoMasters>(row.MemoMasters, "MemoDate", "GatOther", dateFrom: aYearPreviousFromDate, inequalityFrom: Inequality.GreatherOrEqualThan, dateTo: aYearPreviousToDate, inequalityTo: Inequality.LessOrEqualThan);
customer.PreviousYearGrossSales = GetFilteredCount<MemoMasters>(row.MemoMasters, "MemoDate", "MemoCost", dateFrom: aYearPreviousFromDate, inequalityFrom: Inequality.GreatherOrEqualThan, dateTo: aYearPreviousToDate, inequalityTo: Inequality.LessOrEqualThan);
customer.PreviousYearOpeningTotalDiscounts = GetFilteredCount<Payment>(row.Payments, "PaymentDate", "SDiscount", dateFrom: aYearPreviousFromDate, inequalityFrom: Inequality.LessThan);
customer.PreviousYearOpeningTotalBf = GetFilteredCount<Payment>(row.Payments, "PaymentDate", "SSAmount", "AdjustmentBf", true, dateFrom: aYearPreviousFromDate, inequalityFrom: Inequality.LessThan);
customer.PreviousYearTotalBf = GetFilteredCount<Payment>(row.Payments, "PaymentDate", "SSAmount", "AdjustmentBf", true, dateFrom: aYearPreviousFromDate, inequalityFrom: Inequality.GreatherOrEqualThan, dateTo: aYearPreviousToDate, inequalityTo: Inequality.LessOrEqualThan);
customer.PreviousYearOpeningTotalPayments = GetFilteredCount<Payment>(row.Payments, "PaymentDate", "SCAmount", "AdjustmentBf", false, dateFrom: aYearPreviousFromDate, inequalityFrom: Inequality.LessThan);
customer.PreviousYearTotalPayments = GetFilteredCount<Payment>(row.Payments, "PaymentDate", "SCAmount", "AdjustmentBf", false, dateFrom: aYearPreviousFromDate, inequalityFrom: Inequality.GreatherOrEqualThan, dateTo: aYearPreviousToDate, inequalityTo: Inequality.LessOrEqualThan);
customer.PreviousYearTotalDiscounts = GetFilteredCount<Payment>(row.Payments, "PaymentDate", "SDiscount", dateFrom: fromDate, inequalityFrom: Inequality.GreatherOrEqualThan, dateTo: aYearPreviousToDate, inequalityTo: Inequality.LessOrEqualThan);
// Current Year
customer.OpeningMemoDiscount = GetFilteredCount<MemoMasters>(row.MemoMasters, "MemoDate", "MemoDiscount", dateFrom: fromDate, inequalityFrom: Inequality.LessThan);
customer.OpeningGatOther = GetFilteredCount<MemoMasters>(row.MemoMasters, "MemoDate", "GatOther", dateFrom: fromDate, inequalityFrom: Inequality.LessThan);
customer.OpeningGrossSales = GetFilteredCount<MemoMasters>(row.MemoMasters, "MemoDate", "MemoCost", dateFrom: fromDate, inequalityFrom: Inequality.LessThan);
customer.Quantity = GetFilteredCount<MemoMasters>(row.MemoMasters, "MemoDate", "Quantity", dateFrom: fromDate, inequalityFrom: Inequality.GreatherOrEqualThan, dateTo: toDate, inequalityTo: Inequality.LessOrEqualThan);
customer.QuantityConverted = GetFilteredCount<MemoMasters>(row.MemoMasters, "MemoDate", "QuantityConverted", dateFrom: fromDate, inequalityFrom: Inequality.GreatherOrEqualThan, dateTo: toDate, inequalityTo: Inequality.LessOrEqualThan);
customer.MemoDiscount = GetFilteredCount<MemoMasters>(row.MemoMasters, "MemoDate", "MemoDiscount", dateFrom: fromDate, inequalityFrom: Inequality.GreatherOrEqualThan, dateTo: toDate, inequalityTo: Inequality.LessOrEqualThan);
customer.GatOther = GetFilteredCount<MemoMasters>(row.MemoMasters, "MemoDate", "GatOther", dateFrom: fromDate, inequalityFrom: Inequality.GreatherOrEqualThan, dateTo: toDate, inequalityTo: Inequality.LessOrEqualThan);
customer.GrossSales = GetFilteredCount<MemoMasters>(row.MemoMasters, "MemoDate", "MemoCost", dateFrom: fromDate, inequalityFrom: Inequality.GreatherOrEqualThan, dateTo: toDate, inequalityTo: Inequality.LessOrEqualThan);
customer.OpeningTotalBf = GetFilteredCount<Payment>(row.Payments, "PaymentDate", "SSAmount", "AdjustmentBf", true, dateFrom: fromDate, inequalityFrom: Inequality.LessThan);
customer.OpeningTotalPayments = GetFilteredCount<Payment>(row.Payments, "PaymentDate", "SCAmount", "AdjustmentBf", false, dateFrom: fromDate, inequalityFrom: Inequality.LessThan);
customer.OpeningTotalDiscounts = GetFilteredCount<Payment>(row.Payments, "PaymentDate", "SDiscount", dateFrom: fromDate, inequalityFrom: Inequality.LessThan);
customer.TotalBf = GetFilteredCount<Payment>(row.Payments, "PaymentDate", "SSAmount", "AdjustmentBf", true, dateFrom: fromDate, inequalityFrom: Inequality.GreatherOrEqualThan, dateTo: toDate, inequalityTo: Inequality.LessOrEqualThan);
customer.TotalPayments = GetFilteredCount<Payment>(row.Payments, "PaymentDate", "SCAmount", "AdjustmentBf", false, dateFrom: fromDate, inequalityFrom: Inequality.GreatherOrEqualThan, dateTo: toDate, inequalityTo: Inequality.LessOrEqualThan);
customer.TotalDiscounts = GetFilteredCount<Payment>(row.Payments, "PaymentDate", "SDiscount", dateFrom: fromDate, inequalityFrom: Inequality.GreatherOrEqualThan, dateTo: toDate, inequalityTo: Inequality.LessOrEqualThan);
result.Add(customer);
}
}
return result;
}