public static ItemCollection <Customers> GetCustomers(string search, string type)
{
ItemCollection <Customers> result;
using (var db = new TradeContext())
{
var c = from b in db.Customers
select b;
db.Customers.Load();
result = new ItemCollection <Customers>(from t in db.Customers.Local
join p in db.Products on t.Id equals p.CustomersId into tp
where (type == "Имя" && t.FirstName.Contains(search)) || (type == "Фамилия" && t.LastName.Contains(search)) || (type == "Адрес" && t.Address.Contains(search)) || (type == "Телефон" && t.Phone.Contains(search))
from subt in tp.DefaultIfEmpty()
select new Customers()
{
Id = t.Id,
FirstName = t.FirstName,
LastName = t.LastName,
Phone = t.Phone,
Address = t.Address,
ProductCount = (from z in db.Products
where z.CustomersId == t.Id
select(int?) z.Count).Sum() ?? 0
});
}
return(result);
}
public static ItemCollection <Customers> GetCustomers()
{
ItemCollection <Customers> result;
using (var db = new TradeContext())
{
var c = from b in db.Customers
select b;
db.Customers.Load();
result = new ItemCollection <Customers>(from t in db.Customers.Local
join p in db.Products on t.Id equals p.CustomersId into tp
from subt in tp.DefaultIfEmpty()
//group t by t.FirstName, t.
select new Customers()
{
Id = t.Id,
FirstName = t.FirstName,
LastName = t.LastName,
Phone = t.Phone,
Address = t.Address,
ProductCount = (from z in db.Products
where z.CustomersId == t.Id
select(int?) z.Count).Sum() ?? 0
});
//считает количество товаров без загрузки самих товаров
//result.ForEach(x => GetProductCount(x));
}
return(result);
}
public static bool SaveProducts(IEnumerable <Products> itemsToSave, Products itemToDelete)
{
try
{
using (var db = new TradeContext())
{
if (itemsToSave != null)
{
foreach (var t in itemsToSave)
{
db.Products.AddOrUpdate(t);
}
}
if (itemToDelete != null)
{
db.Entry(itemToDelete).State = EntityState.Deleted;
db.SaveChanges();
}
//db.Customers.Remove(itemToDelete);
db.SaveChanges();
}
return(true);
}
catch (Exception e)
{
MessageBox.Show(e.Message);
return(false);
}
}
public static ItemCollection <Products> GetProducts(int id)
{
ItemCollection <Products> result;
using (var db = new TradeContext())
{
db.Products.Where(x => x.CustomersId == id).Load();
result = new ItemCollection <Products>(db.Products.Local);
}
return(result);
}
public static ItemCollection <Products> GetProducts(string search, string type)
{
ItemCollection <Products> result;
using (var db = new TradeContext())
{
db.Products.Where(x => (type == "Товар" && x.Name.Contains(search))).Load();
result = new ItemCollection <Products>(db.Products.Local);
}
return(result);
}
public static int GetProductCount(Customers customer)
{
using (var db = new TradeContext())
{
var item = db.Customers.Find(customer.Id);
var x = db.Entry(item)
.Collection(b => b.Products)
.Query()
.Count();
var c = db.Entry(item)
.Collection(b => b.Products)
.Query()
.Sum(z => z.Count);
return(x + c);
}
return(0);
}
