Assembly: mscorlib (in mscorlib.dll)
- A specific number of hours. Note that the number in the val parameter can be either positive or negative, and it can express partial hours as well as whole hours.
This method does not change the value of the current DateTime object; rather, it returns a new DateTime object.
The fractional part of an hour is represented by the fractional part of the val parameter (that is, anything to the right of the decimal point). For example, 4.5 is equivalent to 4 hours, 30 minutes, 0 seconds, 0 milliseconds, and 0 ticks. The number in the val parameter is rounded to the nearest tick.