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Calendar.ToFourDigitYear Method

Converts the specified two-digit year to a four-digit year by using the TwoDigitYearMax property to determine the appropriate century.

[Visual Basic]
Public Overridable Function ToFourDigitYear( _
   ByVal year As Integer _
) As Integer
public virtual int ToFourDigitYear(
 int year
public: virtual int ToFourDigitYear(
 int year
public function ToFourDigitYear(
   year : int
) : int;


A two-digit integer that represents the year to convert.

Return Value

An integer that contains the four-digit representation of year.


Exception Type Condition
ArgumentOutOfRangeException year is outside the range supported by the calendar.


TwoDigitYearMax is the last year in the 100-year range that can be represented by a two-digit year. The century is determined by finding the sole occurrence of the two-digit year within that 100-year range. For example, if TwoDigitYearMax is set to 2029, the 100-year range is from 1930 to 2029; therefore, a 2-digit value of 30 is interpreted as 1930, while a 2-digit value of 29 is interpreted as 2029.

If year is greater than or equal to 100, the value of year is returned unchanged.


Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, .NET Compact Framework

See Also

Calendar Class | Calendar Members | System.Globalization Namespace | TwoDigitYearMax