private void PageFrame_Navigating(object sender, NavigatingCancelEventArgs e)
{
if (start > 0)
{
start--;
return;
}
if (Content != null && !_allowDirectNavigation)
{
e.Cancel = true;
_navArgs = e;
DoubleAnimation animation0 = new DoubleAnimation();
animation0.EasingFunction = new ExponentialEase()
{
EasingMode = EasingMode.EaseOut, Exponent = 1
};
animation0.From = 1;
animation0.To = 0;
animation0.Duration = _duration;
animation0.Completed += SlideCompleted;
PageFrame.BeginAnimation(OpacityProperty, animation0);
}
_allowDirectNavigation = false;
}
private void SlideCompleted(object sender, EventArgs e)
{
_allowDirectNavigation = true;
switch (_navArgs.NavigationMode)
{
case NavigationMode.New:
if (_navArgs.Uri == null)
{
PageFrame.Navigate(_navArgs.Content);
}
else
{
PageFrame.Navigate(_navArgs.Uri);
}
break;
case NavigationMode.Back:
PageFrame.GoBack();
break;
case NavigationMode.Forward:
PageFrame.GoForward();
break;
case NavigationMode.Refresh:
PageFrame.Refresh();
break;
}
Dispatcher.BeginInvoke(DispatcherPriority.Loaded,
(ThreadStart) delegate()
{
DoubleAnimation animation0 = new DoubleAnimation();
animation0.EasingFunction = new ExponentialEase()
{
EasingMode = EasingMode.EaseOut, Exponent = 1
};
animation0.From = 0;
animation0.To = 1;
animation0.Duration = _duration;
PageFrame.BeginAnimation(OpacityProperty, animation0);
});
}
