Gtd.Client.MainForm.Log C# (CSharp) Method

        public void Log(string toString)
        {
            // _log is the name property of the RichTextBox on the bottom of MainForm
            // Sync is an extension method we added to this MainForm control (below) that takes a C# Action delegate
            _log.Sync(() =>
                {
                    var format = string.Format("{0:HH:mm:ss} {1}{2}", DateTime.UtcNow, toString, Environment.NewLine);
                    // append the formatted string the RichTextBox and scroll down
                    _log.AppendText(format);
                    _log.ScrollToCaret();
                });
        }