Windows phone 7 如何在WIndows Phone应用程序中获得access NavigationService，而无需浏览PhoneApplicationPage？

如何在Windows Phone应用程序中获得access NavigationService，而无需浏览PhoneApplicationPage？我的目标是在启动时将其传递给应用程序的主视图模型，这是一种在WPF和Silverlight中对我非常有效的技术。

您可以从应用程序的

PhoneApplicationFrame

中获得它。由于每个Windows Phone应用程序都有一个框架，因此可以从应用程序中的任何位置访问它

((PhoneApplicationFrame)Application.Current.RootVisual).Navigate(...);

---

另一个地方是从应用程序的默认实现中的RootFrame字段获取：

    #region Phone application initialization

    // Avoid double-initialization
    private bool phoneApplicationInitialized = false;

    // Do not add any additional code to this method
    private void InitializePhoneApplication()
    {
        if (phoneApplicationInitialized)
            return;

        // Create the frame but don't set it as RootVisual yet; this allows the splash
        // screen to remain active until the application is ready to render.
        RootFrame = new PhoneApplicationFrame();
        RootFrame.Navigated += CompleteInitializePhoneApplication;

        // Handle navigation failures
        RootFrame.NavigationFailed += RootFrame_NavigationFailed;

        // Ensure we don't initialize again
        phoneApplicationInitialized = true;
    }

    // Do not add any additional code to this method
    private void CompleteInitializePhoneApplication(object sender, NavigationEventArgs e)
    {
        // Set the root visual to allow the application to render
        if (RootVisual != RootFrame)
            RootVisual = RootFrame;

        // Remove this handler since it is no longer needed
        RootFrame.Navigated -= CompleteInitializePhoneApplication;
    }


    #endregion

---

@道格-谢谢！很高兴能帮上忙：）谢谢你，伙计。也节省了我的时间。@Nexus-不客气。很高兴看到答案仍然有用：D