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}";
}
}