public ThueSach TraSach(int makhachhang, int masach)
{
if (GetSachById(masach) != null)
{
KhachHangService khachHangService = new KhachHangService();
if (khachHangService.GetKhachHangById(makhachhang) != null)
{
ThueSach thueSach = GetThueSachKhach(makhachhang, masach);
if (thueSach != null)
{
thueSach.TinhTrang = "0";
Sach sach = GetSachById(masach);
sach.SoLuong = (Convert.ToInt32(sach.SoLuong) + 1).ToString();
qLTV.SaveChanges();
return(thueSach);
}
;
return(null);
}
return(null);
}
return(null);
}