SIPSorcery.MonitoringConsole.AppendMonitorText C# (CSharp) Method

        private void AppendMonitorText(string message)
        {
            if (message == null || message.Trim().Length == 0)
            {
                return;
            }
            else if (this.Dispatcher.CheckAccess())
            {
                if (m_monitoringText.Length + message.Length > MAX_MONITORING_TEXT_LENGTH)
                {
                    m_monitoringText.Remove(0, message.Length);
                }

                m_monitoringText.Append(message);
                m_monitoringEventsTextBox.Text = m_monitoringText.ToString();
                m_monitoringEventsTextBox.Select(m_monitoringEventsTextBox.Text.Length, 1);
            }
            else
            {
                this.Dispatcher.BeginInvoke(new SetTextDelegate(AppendMonitorText), message);
            }
        }