I need the current Datetime minus myDate1 in seconds.
myDate1
DateTime myDate1 = new DateTime(1970, 1, 9, 0, 0, 00); DateTime myDate2 = DateTime.Now; T
you need to get .TotalSeconds property of your timespan :
.TotalSeconds
DateTime myDate1 = new DateTime(2012, 8, 13, 0, 05, 00); DateTime myDate2 = DateTime.Now; TimeSpan myDateResult = new TimeSpan(); myDateResult = myDate2 - myDate1; MessageBox.Show(myDateResult.TotalSeconds.ToString());