public bool Exists(BaseEmployee empl) { return(staff.Exists(x => x.Surname == empl.Surname && x.Name == empl.Name && x.MiddleName == empl.MiddleName && x.Position == empl.Position)); }
public bool Exists_Staff(BaseEmployee empl) { return(_staff.Exists(empl)); }
public void Add(BaseEmployee empl) { staff.Add(empl); }
public void Add_Staff(BaseEmployee empl) { _staff.Add(empl); }