public bool Update(Staff item) { if (item == null) { throw new ArgumentNullException("item"); } if (StaffDBManager.Update(item) == 0) { return(false); } else { return(true); } }
public Staff AddStaff(Staff item) { if (item == null) { throw new ArgumentNullException("item"); } if (StaffDBManager.AddStaff(item) == 0) { return(null); } else { return(item); } }
public Staff GetById(int staff_id) { return(StaffDBManager.GetStaffById(staff_id)); }
public IEnumerable <Staff> GetAll() { return(StaffDBManager.GetAllStaff().Cast <Staff>()); }