/// <summary>
/// Preserves state associated with this page in case the application is suspended or the
/// page is discarded from the navigation cache. Values must conform to the serialization
/// requirements of <see cref="SuspensionManager.SessionState"/>.
/// </summary>
/// <param name="sender">The source of the event; typically <see cref="NavigationHelper"/></param>
/// <param name="e">Event data that provides an empty dictionary to be populated with
/// serializable state.</param>
protected override async void navigationHelper_SaveState(object sender, SaveStateEventArgs e)
{
if (this.subscription != null)
{
await App.Current.Client.Unsubscribe(this.subscription);
this.subscription = null;
}
}
protected override async void navigationHelper_SaveState(object sender, SaveStateEventArgs e)
{
if (this.subscriptions != null)
{
foreach (var subscription in this.subscriptions)
{
await App.Current.Client.Unsubscribe(subscription);
}
this.subscriptions.Clear();
}
}
protected override void navigationHelper_SaveState(object sender, SaveStateEventArgs e)
{
}
