LogViewer.MainWindow.OnRecord C# (CSharp) Method

        private void OnRecord(object sender, RoutedEventArgs e)
        {
            Button button = (Button)sender;
            if (button.Tag != null)
            {
                // paused
                button.Content = button.Tag;
                button.Tag = null;
                StopRecording();
            }
            else
            {
                // start recording.
                button.Tag = button.Content;
                button.Content = "\ue15b";
                StartRecording();
            }
        }