Calendar.GetDaysInYear Method (Int32, Int32)
April 12, 2014
When overridden in a derived class, returns the number of days in the specified year and era.
Assembly: mscorlib (in mscorlib.dll)
year is outside the range supported by the calendar.
era is outside the range supported by the calendar.
The derived class must support CurrentEra when it is passed as the era parameter. One way to support CurrentEra is by replacing it with the value stored in Eras, which is the value for the current era of the calendar.