UWP保存导航视图上的切换开关状态

<ToggleSwitch x:Name="MyToggleSwitch" IsOn="True" />

using Windows.Storage;

// 保存切换开关状态
ApplicationData.Current.LocalSettings.Values["ToggleSwitchState"] = MyToggleSwitch.IsOn;

// 读取切换开关状态
if (ApplicationData.Current.LocalSettings.Values.ContainsKey("ToggleSwitchState"))
{
    bool toggleSwitchState = (bool)ApplicationData.Current.LocalSettings.Values["ToggleSwitchState"];
    MyToggleSwitch.IsOn = toggleSwitchState;
}

protected override void OnNavigatedFrom(NavigationEventArgs e)
{
    // 保存切换开关状态
    ApplicationData.Current.LocalSettings.Values["ToggleSwitchState"] = MyToggleSwitch.IsOn;
}

protected override void OnNavigatedTo(NavigationEventArgs e)
{
    // 读取切换开关状态
    if (ApplicationData.Current.LocalSettings.Values.ContainsKey("ToggleSwitchState"))
    {
        bool toggleSwitchState = (bool)ApplicationData.Current.LocalSettings.Values["ToggleSwitchState"];
        MyToggleSwitch.IsOn = toggleSwitchState;
    }
}