#82 – Some Common DateTime and TimeSpan Functions
September 7, 2010 Leave a comment
Here are some of the more common operations that you can perform on DateTime objects:
DateTime dt = new DateTime(1941, 12, 7);
dt = dt.AddDays(365); // 7-Dec-1942 12:00AM
dt = dt.AddYears(4); // 7-Dec-1946 12:00AM
dt = dt.AddMinutes(90); // 7-Dec-1946 1:30AM
Console.WriteLine(dt.ToShortDateString()); // 12/7/1946
Console.WriteLine(dt.ToShortTimeString()); // 1:30 AM
Console.WriteLine(dt.ToLongDateString()); // Saturday, December 07, 1946
Console.WriteLine(dt.ToLongTimeString()); // 1:30:00 AM
string[] fms = dt.GetDateTimeFormats(); // 134 different formats, e.g. 12/7/1946, 12/7/46, 1946-12-07, 07-Dec-46, etc.
DateTime dt2 = DateTime.Parse("1/1/12"); // 1-Jan-2012
And here are some examples of operations that you can perform on TimeSpan objects:
TimeSpan ts = new TimeSpan(10, 8, 58); // 10:08:58
TimeSpan ts2 = new TimeSpan(-11, 0, 0); // -11 hrs
ts = ts.Add(ts2); // -00:51:02
TimeSpan ts3 = ts.Duration(); // 00:51:02 (absolute value)
TimeSpan ts4 = TimeSpan.FromHours(500); // 20.20:00:00 (20 days, 20 hrs)
TimeSpan ts5 = TimeSpan.Parse("1:02:03"); // 01:02:03 (1 hr, 2 min, 3 sec)
TimeSpan ts6 = ts4 + ts5; // 20.21:02:03
TimeSpan ts7 = ts4 - ts5; // 20.18:57:57
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