public DataTable SelectAllByUserID(SqlInt32 UserID)
        {
            LeaveDAL  dalLeave = new LeaveDAL();
            DataTable dt       = new DataTable();

            dt = dalLeave.SelectAllByUserID(UserID);
            if (dt == null)
            {
                Message = dalLeave.Message;
                return(null);
            }
            else
            {
                return(dt);
            }
        }