DateTime.DaysInMonth Method (Int32, Int32)
Returns the number of days in the specified month and year.
Assembly: mscorlib (in mscorlib.dll)
The month (a number ranging from 1 to 12).
Return ValueType: System.Int32
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.
month is less than 1 or greater than 12.
year is less than 1 or greater than 9999.
TheGetDaysInMonth method.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
Available since 8
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Available since 8.1