// sửa khách hàng
public void Edit(tblKhach khach)
{
var k = db.tblKhaches.Find(khach.IDKhach);
k.DiaChi = khach.DiaChi;
k.SDT = khach.SDT;
k.SoNguoi = khach.SoNguoi;
k.TenKhach = khach.TenKhach;
db.SaveChanges();
}
// thêm khách hàng
public int Insert(tblKhach khach)
{
db.tblKhaches.Add(khach);
db.SaveChanges();
return(khach.IDKhach);
}
