public void UnlinkFaceBook()
{
if (!HasConnection || UserPreference.AccessKey == null)
{
return;
}
var fb = new FacebookClient(UserPreference.AccessKey)
{
AppId = AppId
};
fb.DeleteAsync(string.Format("https://graph.facebook.com/{0}/permissions", UserPreference.FbUserId));
UserPreference.AccessKey = null;
UserPreference.FbUserId = null;
UserPreference.Name = null;
SaveSettings();
NotifyPropertyChanged("AccessKey");
}
private void btnDeleteLastMessage_Click(object sender, EventArgs args)
{
btnDeleteLastMessage.Enabled = false;
var fb = new FacebookClient(_accessToken);
// make sure to add event handler for DeleteCompleted.
fb.DeleteCompleted += (o, e) =>
{
// incase you support cancellation, make sure to check
// e.Cancelled property first even before checking (e.Error!=null).
if (e.Cancelled)
{
// for this example, we can ignore as we don't allow this
// example to be cancelled.
// you can check e.Error for reasons behind the cancellation.
var cancellationError = e.Error;
}
else if (e.Error != null)
{
// error occurred
this.BeginInvoke(new MethodInvoker(
() =>
{
MessageBox.Show(e.Error.Message);
}));
}
else
{
// the request was completed successfully
// make sure to be on the right thread when working with ui.
this.BeginInvoke(new MethodInvoker(
() =>
{
MessageBox.Show("Message deleted successfully");
btnDeleteLastMessage.Enabled = false;
}));
}
};
fb.DeleteAsync(_lastMessageId);
}
private void DeleteLastMessage_Click(object sender, RoutedEventArgs e)
{
btnDeleteLastMessage.IsEnabled = false;
var fb = new FacebookClient(_accessToken);
fb.DeleteCompleted += (o, args) =>
{
if (args.Error != null)
{
Dispatcher.BeginInvoke(() => MessageBox.Show(args.Error.Message));
return;
}
Dispatcher.BeginInvoke(() =>
{
MessageBox.Show("Message deleted successfully");
btnDeleteLastMessage.IsEnabled = false;
});
};
fb.DeleteAsync(_lastMessageId);
}