partial class MainForm:
...
        def ShowValues ():
                ValuesEdit.Text = \
...
                        "Tune value: " + Tune.CurrentTuneValue ().ToString () + "\n" + \
                        "Next tune:  " + Tune.TimeRemaining.ToString ()       + "\n" + \
                        ""
...

        private def RunBtnCheckedChanged(sender as object, e as
System.EventArgs):
...
                _RunResult = RunThread.BeginInvoke()
...

        def RunThread():
                Running = true
...

static class Tune:
...
        static def TimeRemaining ():
                return NextTuneTime - DateTime.Now