title: Format TimeSpan in DataGridView column
body: <p>I've seen <a href="https://stackoverflow.com/questions/840120/timespan-formatting">these</a> <a href="https://stackoverflow.com/questions/574881/how-can-i-string-format-a-timespan-object-with-a-custom-format-in-net">questions</a> but both involve methods that aren't available in the CellStyle Format value.  I only want to show the hours and minutes portion (16:05); not the seconds as well (16:05:13).  I tried forcing the seconds value to zero but still got something like 16:05:00.  Short of using a kludge like providing a string or a DateTime (and only showing the hour/minutes part) is there any way I can get the formatting to do what I want.</p>