小编Tar*_*raW的帖子

在Windows 8.1中,当您添加基于Windows 8.1 Basic Page的View/Page时,它不再继承LayoutAware类,因为它在Win 8.1中不再存在.现在,所有基本页面都直接从Page类继承.此外,它不再具有OnNavigatedTo/OnNavigatedFrom事件,因为Win8.1 Basic页面现在利用NavigationHelper类并调用this.navigationHelper.LoadState和this.navigationHelper.SaveState事件处理程序.如果使用TipCalc示例并添加Windows Store基本页面,TipView,初始页面将如下所示:

public sealed partial class TipView : Page
{

    private NavigationHelper navigationHelper;
    private ObservableDictionary defaultViewModel = new ObservableDictionary();

    /// <summary>
    /// This can be changed to a strongly typed view model.
    /// </summary>
    public ObservableDictionary DefaultViewModel
    {
        get { return this.defaultViewModel; }
    }

    /// <summary>
    /// NavigationHelper is used on each page to aid in navigation and 
    /// process lifetime management
    /// </summary>
    public NavigationHelper NavigationHelper
    {
        get { return this.navigationHelper; }
    } …