生命周期管理

使用BasicPage
页面间传递复杂对象：

private void go2_Click(object sender, RoutedEventArgs e)
        {
            student stu = new student() { id = 1, name = "ggz" }; //类必须定义为public
            var serializer = new DataContractSerializer(typeof(student));
            MemoryStream stream = new MemoryStream();

            serializer.WriteObject(stream, stu);
            byte[] barray = stream.ToArray();
            string param = Encoding.UTF8.GetString(barray,0, barray.Length);
            System.Diagnostics.Debug.WriteLine(param);
            Frame.Navigate(typeof(BasicPage1),param);
        }


protected override void OnNavigatedTo(NavigationEventArgs e)
        {
            byte[] buffer = Encoding.UTF8.GetBytes((string)e.Parameter);
            MemoryStream stream = new MemoryStream(buffer);
            DataContractSerializer serializer = new DataContractSerializer(typeof(student));
            student stu= serializer.ReadObject(stream) as student;

            navigationHelper.OnNavigatedTo(e);
            if (stu != null)
                this.textBox1.Text = stu.name;
        }

步骤：
App:
OnLaunched中添加：

 rootFrame = new Frame();

                App12.Common.SuspensionManager.RegisterFrame(rootFrame, "appFrame");//第一句注册

                // Set the default language
                rootFrame.Language = Windows.Globalization.ApplicationLanguages.Languages[0];

                rootFrame.NavigationFailed += OnNavigationFailed;



                if (e.PreviousExecutionState == ApplicationExecutionState.Terminated)
                {
                    //TODO: Load state from previously suspended application
                    await App12.Common.SuspensionManager.RestoreAsync();//第二句还原
                }

                // Place the frame in the current Window
                Window.Current.Content = rootFrame;

OnSuspending中添加：

await App12.Common.SuspensionManager.SaveAsync();

MainPage：

private void navigationHelper_LoadState(object sender, LoadStateEventArgs e)
        {
            if (e.PageState != null && e.PageState.ContainsKey("input"))
                put.Text = e.PageState["input"].ToString();
        }

private void navigationHelper_SaveState(object sender, SaveStateEventArgs e)
        {
            e.PageState["input"] = put.Text;

        }

使用本地设置：

保存：
 ApplicationDataContainer localSettings = ApplicationData.Current.LocalSettings;

//ApplicationDataContainer 存储数据的容器  ApplicationData 提供对应用程序数据存储区的访问

// localSettings 获取本地应用程序数据存储区中的应用程序设置容器。
localSettings.Values["value"] = nameinput.Text;

//将 nameinput.Text的内容以键值对的形式保存到ApplicationDataContainer

恢复：
ApplicationDataContainer localSettings = ApplicationData.Current.LocalSettings;
 if(localSettings.Values.ContainsKey(“value”))
 {
nameinput.Text = localSettings.Values["value"].ToString();

}