public bool them(Product pro)
{
try
{
db.Products.Add(pro);
db.SaveChanges();
return(true);
}
catch (Exception)
{
return(false);
}
}
public bool DangKi(Customer cus)
{
try
{
if (db.Customers.Where(a => a.CustomerID == cus.CustomerID).ToList().Count > 0)
{
return(false);
}
else
{
db.Customers.Add(cus);
db.SaveChanges();
return(true);
}
}
catch (Exception)
{
return(false);
}
}
public void AddOrder(Order or, List <Order_Detail> lst)
{
db.Orders.Add(or);
db.Order_Details.AddRange(lst);
db.SaveChanges();
}