public async void RemoveNurse()
        {
            object result = await DialogHost.Show(new DeleteMessageBox(), "RootDialog");

            if (result.Equals(true))
            {
                NursesComboBoxItems.Add(new ComboBoxPairs(ListSelectedNurse.Key, ListSelectedNurse.Value));
                Hospital.Rooms[RoomID].removeNurse(ListSelectedNurse.Key);
                ((Nurse)Hospital.Employees[ListSelectedNurse.Key]).removeRoom(RoomID);
                HospitalDB.DeleteNurseRoom(ListSelectedNurse.Key, RoomID);
                NursesList.Remove(ListSelectedNurse);
                NursesNumber = $"Nurses : {NursesList.Count}";
            }
        }