public MainWindow()
{
InitializeComponent();
var navigationModel = new NavModel(this);
NavManager.Instance.Initialize(navigationModel);
navigationModel.Navigate(ModesEnum.SignIn);
Model.ApplicationStaticDB.AddUser(new Model.User("Julia", "Aleksandrova", "*****@*****.**", "ddenouement", "12345"));
}
/// <summary>
/// This method performs switch betwean different controls
/// </summary>
/// <param name="mode">Enum value of corresponding control</param>
internal void Navigate(ModesEnum mode)
{
//If _navigationModel is null, nothing will happen
_navigationModel?.Navigate(mode);
}