取两个时间差

TimeSpan ts1 = new TimeSpan();
TimeSpan ts2 = new TimeSpan();

ts1 = new TimeSpan(DateTime.ParseExact(DateTime.Now.ToString("yyyyMMdd") + "10:20", "yyyyMMdd HH:mm", System.Globalization.CultureInfo.CurrentCulture).Ticks);
ts2 = new TimeSpan(DateTime.ParseExact(DateTime.Now.ToString("yyyyMMdd") +"10:30", "yyyyMMdd HH:mm", System.Globalization.CultureInfo.CurrentCulture).Ticks);

imeSpan ts = ts1.Subtract(ts2).Duration();