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.