private void BrowserNavigated(object sender, NavigationEventArgs e)
{
FacebookOAuthResult oauthResult;
if (!client.TryParseOAuthCallbackUrl(e.Uri, out oauthResult))
{
BrowserVisibility = Visibility.Visible;
IsCalculating = false;
return;
}
IsCalculating = true;
if (oauthResult.IsSuccess)
{
client.AccessToken = oauthResult.AccessToken;
FacebookClientHelpers.SaveToken(client.AccessToken);
BrowserVisibility = Visibility.Collapsed;
PostToWall();
}
else
{
MessageBox.Show(oauthResult.ErrorDescription);
BrowserVisibility = Visibility.Collapsed;
}
}
private void Facebook_PostComplete(object sender, FacebookApiEventArgs args)
{
//Checking for errors
if (args.Error != null)
{
//Authorization error
if (args.Error is FacebookOAuthException)
{
Dispatcher.BeginInvoke(() => MessageBox.Show("Authorization Error"));
//Remove the actual token since it doesn't work anymore.
FacebookClientHelpers.SaveToken(null);
client.AccessToken = null;
}
else
{
Dispatcher.BeginInvoke(() => MessageBox.Show(args.Error.Message));
}
}
else
{
Dispatcher.BeginInvoke(() =>
{
MessageBox.Show("Message posted successfully");
NavigationService.GoBack();
});
}
Dispatcher.BeginInvoke(() => IsCalculating = false);
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
if (e.NavigationMode == NavigationMode.Back)
{
return;
}
SystemTray.IsVisible = true;
FacebookClientHelpers.SaveToken(null);
while (NavigationService.CanGoBack)
{
NavigationService.RemoveBackEntry();
}
}