Updating form controls from another thread.

Form controls, by default, can only be updated by the forms thread. Otherwise an invoke must be used.

The example below shows a simple logging function that can be called by threads other than the forms.

delegate void LogSafeCall(string s);

        private void Log(string s)
        {
            if (EventsListBox.InvokeRequired)
            {
                LogSafeCall d = new LogSafeCall(Log);
                EventsListBox.Invoke(d, new object[] { s });
            }
            else
            {
                EventsListBox.Items.Add(s);
                EventsListBox.SelectedIndex = EventsListBox.Items.Count - 1;
            }
        }