System.DateTimeOffset.AddDays Method

Adds a specified number of whole and fractional days to the current DateTimeOffset object.

Syntax

public DateTimeOffset AddDays (double days)

Parameters

days
A number of whole and fractional days. The number can be negative or positive.

Returns

An object whose value is the sum of the date and time represented by the current DateTimeOffset object and the number of days represented by days.

Remarks

The fractional part of the days parameter is the fractional part of a day. For example, 4.5 is equivalent to 4 days, 12 hours, 0 minutes, 0 seconds, 0 milliseconds. The days parameter is rounded to the nearest millisecond.

Note:

This method returns a new DateTimeOffset object. It does not modify the value of the current object by adding days to its date and time.

Because a DateTimeOffset object does not represent the date and time in a specific time zone, the DateTimeOffset.AddDays(double) method does not consider a particular time zone's adjustment rules when it performs date and time arithmetic.

Converting time intervals of less than a day to a fraction can involve a loss of precision. If this is problematic, you can use the DateTimeOffset.Add(TimeSpan) method, which enables you to specify more than one kind of time interval in a single method call and eliminates the need to convert time intervals to fractional parts of a day.

Requirements

Namespace: System
Assembly: mscorlib (in mscorlib.dll)
Assembly Versions: 2.0.0.0, 4.0.0.0