Roman Numeral Converter

A simple converter written in C# to convert roman numerals into integers.
Also to convert an integer to roman numerals.

Roman numerals are positive only and the maximum number is 3999

Usage

From Roman numerals

Console.WriteLine("IX".FromRomanNumerals());  // 9
Console.WriteLine("MCMLXXXIV".FromRomanNumerals());  // 1984
Console.WriteLine("LXXXIX".FromRomanNumerals());  // 89  

To Roman numerals

Console.WriteLine(9.ToRomanNumerals());  // IX
Console.WriteLine(1984.ToRomanNumerals());  // MCMLXXXIV
Console.WriteLine(89.ToRomanNumerals());    // LXXXIX