Returns a new DateTimeOffset object that adds a specified time interval to the value of this instance.
Assembly: mscorlib (in mscorlib.dll)
You can use the method to add more than one kind of time interval (days, hours, minutes, seconds, or milliseconds) in a single operation. This method's behavior is identical to the addition operator. The DateTimeOffset structure also supports specialized addition methods (such as AddDays, AddHours, and AddMinutes) for each time interval.
This method returns a new DateTimeOffset object. It does not modify the value of the current object by adding timeSpan to its date and time.
Because a DateTimeOffset object does not represent the date and time in a specific time zone, the method does not consider a particular time zone's adjustment rules when it performs date and time arithmetic.
If the timeSpan parameter is nullptr, this method returns the value of the original DateTimeOffset object unchanged.
The following example creates an array of TimeSpan objects that represent the flight times between destinations. The method then adds these times to a DateTimeOffset object that represents a flight's initial takeoff time. The result reflects the scheduled arrival time at each destination.
.NET FrameworkSupported in: 4.6, 4.5, 4, 3.5 SP1, 3.0 SP1, 2.0 SP1
.NET Framework Client ProfileSupported in: 4, 3.5 SP1
Portable Class LibrarySupported in: Portable Class Library
.NET for Windows Store appsSupported in: Windows 8
Supported in: Windows Phone 8.1
Supported in: Windows Phone Silverlight 8.1
Supported in: Windows Phone Silverlight 8
Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.