TimeSpan ts = new TimeSpan(1, 30, 0);
TimeSpan ts1 = new TimeSpan(1, 30, 0); TimeSpan ts2 = new TimeSpan(0, 15, 0); TimeSpan sum = ts1 + ts2;
TimeSpan ts1 = new TimeSpan(1, 30, 0); TimeSpan ts2 = new TimeSpan(0, 15, 0); TimeSpan diff = ts1 - ts2;Package library: The TimeSpan class is part of the System namespace in the .NET Framework.