public void DeleteDish(int code)
{
dal.DeleteDish(code);
bool tmp = false;
var v = (from o in dal.GetListOrderDish() //מחפש את כל המנות המוזמנות באותו קוד שלא סופקו ומוחק אותם
let s = this.OrderProvided(o.OrderCode)
where s == false && o.DishCode == code
select o).ToList <Ordered_Dish>();
int k = v.Count();
for (int i = 0; i < k; i++)
{
dal.GetListOrderDish().Remove(v[i]);
tmp = true;
}
if (tmp == true)
{
throw new Exception("there are ordered dishes that deleted...");
}
}