Czarina,

When dealing with the DateTime class you will have to get used to dealing with the TimeSpan class when you want to express intervals (ie. 3 days 2 hours 12 minutes etc.) between DateTime instances.

DateTime myDateTime1 = new DateTime(2003, 1, 1);
DateTime myDateTime2 = new DateTime();
TimeSpan myTimeSpan  = new TimeSpan();

myDateTime2 = DateTime.Now;

// Calculate interval between 2 dates using Subtract method.
myTimeSpan = myDateTime1.Subtract(myDateTime2);

Console.WriteLine(myTimeSpan.Days.ToString());

// Calculate interval between 2 dates using overloaded operator.
myTimeSpan = myDateTime1 - myDateTime2.AddDays(100);

Console.WriteLine(myTimeSpan.Days.ToString());

As you can see from the code above the result using either of the 2 methods returns a TimeSpan instance from which we can deduce things like number of Days.

The DateTime class also provides overloaded operators and methods for performing additions and subtractions using TimeSpan instances.