public UNIVERSITY Add(UNIVERSITY entity)
        {
            UNIVERSITY insertedUni = null;

            if (CheckHelper.IsFilled(entity))
            {
                using (ctx = new ReadingRoomsEntities())
                {
                    entity.UNI_ID = 1;

                    UNIVERSITY maxUni = ctx.UNIVERSITies.OrderByDescending(u => u.UNI_ID).FirstOrDefault();
                    if (CheckHelper.IsFilled(maxUni))
                    {
                        entity.UNI_ID = maxUni.UNI_ID + 1;
                    }

                    insertedUni = ctx.UNIVERSITies.Add(entity);
                    ctx.SaveChanges();
                }
            }

            return(insertedUni);
        }
        public SEAT Add(SEAT entity)
        {
            SEAT insertedSeat = null;

            if (CheckHelper.IsFilled(entity))
            {
                using (ctx = new ReadingRoomsEntities())
                {
                    entity.SEAT_ID = 1;

                    SEAT maxSeat = ctx.SEATs.OrderByDescending(s => s.SEAT_ID).FirstOrDefault();
                    if (CheckHelper.IsFilled(maxSeat))
                    {
                        entity.SEAT_ID = maxSeat.SEAT_ID + 1;
                    }

                    insertedSeat = ctx.SEATs.Add(entity);
                    ctx.SaveChanges();
                }
            }

            return(insertedSeat);
        }
        public FACULTY Add(FACULTY entity)
        {
            FACULTY insertedFaculty = null;

            if (CheckHelper.IsFilled(entity))
            {
                using (ctx = new ReadingRoomsEntities())
                {
                    entity.FAC_ID = 1;

                    FACULTY maxFaculty = ctx.FACULTies.OrderByDescending(f => f.FAC_ID).FirstOrDefault();
                    if (CheckHelper.IsFilled(maxFaculty))
                    {
                        entity.FAC_ID = maxFaculty.FAC_ID + 1;
                    }

                    insertedFaculty = ctx.FACULTies.Add(entity);
                    ctx.SaveChanges();
                }
            }

            return(insertedFaculty);
        }