Parameters

year

The year.

month

The month (a number ranging from 1 to 12).

Returns

The number of days in month for the specified year.

For example, if month equals 2 for February, the return value is 28 or 29 depending upon whether year is a leap year.

Exceptions

Type	Reason
ArgumentOutOfRangeException	month is less than 1 or greater than 12.

Remarks

The DateTime.DaysInMonth(int, int) method always interprets month and year as the month and year of the Gregorian calendar even if the Gregorian calendar is not the current culture's current calendar. To get the number of days in a specified month of a particular calendar, call that calendar's System.Globalization.Calendar.GetDaysInMonth(int, int, int) method.

Requirements