WP 8.1 中挂起时页面数据保存方式(1)

privatevoid testTB_TextChanged(object sender, TextChangedEventArgs e)
{
    ApplicationDataContainer localSettings = ApplicationData.Current.LocalSettings;
    localSettings.Values["value"] = testTB.Text;
}

privatevoid NavigationHelper_LoadState(object sender, LoadStateEventArgs e)
{
    ApplicationDataContainer localSettings = ApplicationData.Current.LocalSettings;
    if (localSettings.Values.ContainsKey("value"))
    {
        testTB.Text = localSettings.Values["value"].ToString();
    }
}

privatevoid NavigationHelper_SaveState(object sender, SaveStateEventArgs e)
{
    e.PageState["value"] = testTB.Text;
}

privatevoid NavigationHelper_LoadState(object sender, LoadStateEventArgs e)
{
    if (e.PageState != null && e.PageState.ContainsKey("value"))
    {
        testTB.Text = e.PageState["value"].ToString();
    }
}