private void Frame_Navigated(object s, NavigationEventArgs e)
{
if (_navigationService == null)
{
_navigationService = (e.Content as PhoneApplicationPage)?.NavigationService;
}
RaiseNavigated(e.ToNavigationServiceNavigationEventArgs());
}
/// <summary>
/// Invoked immediately after the page is unloaded and is no longer the current source of a parent frame.
/// </summary>
/// <param name="e">An object that contains the event data.</param>
protected override async void OnNavigatedFrom(NavigationEventArgs e)
{
base.OnNavigatedFrom(e);
var handler = DataContext as IHandleNavigatedFrom;
if (handler != null)
{
await InvokeHandlerOnNavigatedFromAsync(handler, e.ToNavigationServiceNavigationEventArgs());
}
}
/// <summary>
/// Invoked immediately after the page is unloaded and is no longer the current source of a parent frame.
/// </summary>
/// <param name="e">An object that contains the event data.</param>
protected override async void OnNavigatedFrom(NavigationEventArgs e)
{
base.OnNavigatedFrom(e);
var viewModel = DataContext as IHandleNavigatedFrom;
if (viewModel != null)
{
await viewModel.OnNavigatedFromAsync(e.ToNavigationServiceNavigationEventArgs());
}
}
/// <summary>
/// Invoked immediately after the page is unloaded and is no longer the current source of a parent frame.
/// </summary>
/// <param name="e">An object that contains the event data.</param>
protected override async void OnNavigatedFrom(NavigationEventArgs e)
{
base.OnNavigatedFrom(e);
var handler = DataContext as IHandleNavigatedFrom;
if (handler != null)
{
await InvokeHandlerOnNavigatedFromAsync(handler, e.ToNavigationServiceNavigationEventArgs());
}
}
