Converts the specified year to a 4-digit year by using the TwoDigitYearMax property to determine the appropriate century.
Assembly: mscorlib (in mscorlib.dll)
- Type: System.Int32
A 2-digit year from 0 through 99, or a 4-digit Hebrew calendar year from 5343 through 5999.
Return ValueType: System.Int32
If the year parameter is a 2-digit year, the return value is the corresponding 4-digit year. If the year parameter is a 4-digit year, the return value is the unchanged year parameter.
The method uses the year parameter and the 100-year range ending in the year defined by the TwoDigitYearMax property to calculate a 4-digit year. The century is determined by finding the sole occurrence of the year parameter within that 100-year range. For example, if TwoDigitYearMax is set to 5729, the 100-year range is from 5630 to 5729. Therefore, a value of 30 is interpreted as 5630, while a value of 29 is interpreted as 5729.
If the TwoDigitYearMax property has the special value 99, the method returns the value of the year parameter unchanged.
The year parameter can be either a two-digit year or a four-digit year. Passing a two-digit year value (less than 100) causes the method to convert the value to a four-digit value according to the TwoDigitYearMax value representing the appropriate century. If the application supplies a four-digit year value that is within the supported calendar range to , the method returns the actual input value. If the application supplies a four-digit value that is outside the supported calendar range, or if it supplies a negative value, the method throws an exception.
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