This should be a very basic design question, but for some reason it doesn't seem to be well documented (maybe due to its simplicity?).

If I'm building a dashboard application in WPF that brig up different CRM tasks and I want to navigate between screens, is this the best way to do this, or is there a better way?

So for example I have Log In Screen -> Main Menu Screen -> Screen to one of different utilities

        var orderManagerWindow = new MyXamlView();
        var loginWindow = Application.Current.MainWindow;
        orderManagerWindow.Left = loginWindow.Left;
        orderManagerWindow.Top = loginWindow.Top;

        Application.Current.MainWindow = orderManagerWindow;
        orderManagerWindow.Show();
        loginWindow.Close();

I would really appreciate help and suggestions!