WindowsStoreNavigator

public class WindowsStoreNavigator : INavigate
{
    private readonly Frame _frame;
    private readonly IKnowWhereYourViewIs _viewLocator;
    private readonly ICreateInstances _ioc;

    public WindowsStoreNavigator(Frame frame, IKnowWhereYourViewIs viewLocator, ICreateInstances ioc)
    {
        _frame = frame;
        _viewLocator = viewLocator;
        _ioc = ioc;
    }

    public void NavigateTo<TViewModel>() where TViewModel : class
    {
        var viewToNavigateTo = _viewLocator.FindViewFor<TViewModel>();
        _frame.Navigate(viewToNavigateTo, _ioc.CreateInstanceOf<TViewModel>());
    }

    public void NavigateTo<TViewModel, TRequest>(TRequest request) where TViewModel : class
    {
        var viewToNavigateTo = _viewLocator.FindViewFor<TViewModel>();
            
        var viewModel = _ioc.CreateInstanceOf<TViewModel>();
        var viewmodelHandler = viewModel as IHandle<TRequest>;
        if (viewmodelHandler != null && request != null)
            viewmodelHandler.Handle(request);

        _frame.Navigate(viewToNavigateTo, viewModel);
    }

    public void GoBack()
    {
        _frame.GoBack();
    }
}