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// This constructor takes (year, month, day)

DateTime dt = new DateTime(2004, 10, 17);

// What day of the month is this?

Console.WriteLine("The day of {0} is {1}", dt.Date, dt.DayOfWeek);

dt = dt.AddMonths(2);  // Month is now December.

Console.WriteLine("Daylight savings: {0}", dt.IsDaylightSavingTime());

The TimeSpan structure allows you to easily define and transform units of time using various

members, for example:

// This constructor takes (hours, minutes, seconds)

TimeSpan ts = new TimeSpan(4, 30, 0);

Console.WriteLine(ts);

// Subtract 15 minutes from the current TimeSpan and

// print the result.

Console.WriteLine(ts.Subtract(new TimeSpan(0, 15, 0)));

At this point, I hope you understand that each data type keyword of C# has a corresponding

type in the .NET base class libraries, each of which exposes a fixed functionality. While I have not

detailed each member of these core types, you are in a great position to dig into the details as you

see fit. Be sure to consult the .NET Framework 3.5 SDK documentation for full details regarding the

intrinsic .NET data types.

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