public bool AddDetailServiceBill(int idBill, int idService)
{
try
{
CHITIETSUDUNGDV detailServiceBill = db.CHITIETSUDUNGDVs.Where(p => p.MAHD == idBill && p.MADICHVU == idService).FirstOrDefault();
decimal? pice = db.DICHVUs.Where(p => p.MADICHVU == idService).Select(p => p.GIADV).SingleOrDefault();
if (detailServiceBill == null)//chua co chi tiet
{
detailServiceBill = new CHITIETSUDUNGDV();
detailServiceBill.MAHD = idBill;
detailServiceBill.MADICHVU = idService;
detailServiceBill.SOLUONG = 1;
detailServiceBill.THANHTIEN = pice;
db.CHITIETSUDUNGDVs.Add(detailServiceBill);
db.SaveChanges();
}
else
{
detailServiceBill.SOLUONG += 1;
detailServiceBill.THANHTIEN = detailServiceBill.SOLUONG * pice;
db.SaveChanges();
}
return(true);
}
catch
{
return(false);
}
}
public bool RemoveDetailServiceBill(int idBill, int idService)
{
try
{
CHITIETSUDUNGDV detailServiceBill = db.CHITIETSUDUNGDVs.Where(p => p.MAHD == idBill && p.MADICHVU == idService).FirstOrDefault();
decimal? pice = db.DICHVUs.Where(p => p.MADICHVU == idService).Select(p => p.GIADV).SingleOrDefault();
detailServiceBill.SOLUONG -= 1;
if (detailServiceBill.SOLUONG > 0)
{
detailServiceBill.THANHTIEN = detailServiceBill.SOLUONG * pice;
}
else
{
db.CHITIETSUDUNGDVs.Remove(detailServiceBill);
}
db.SaveChanges();
return(true);
}
catch
{
return(false);
}
}
