public MainWindowViewModel(MainWindow main)
{
this.mainView = main;
service.CheckNewLocation();
ListOfGenders = new ObservableCollection <Gender>(service.GettAllGender());
ListOfWorkers = new ObservableCollection <User>(service.GettAllUsers());
ListOfLocation = new ObservableCollection <Location>(service.GettAllLocations().OrderBy(x => x.Name));
}