using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(,.)?(M{0,4}(CM|CD|D?C{0,3})(XC|XL|L?X{0,3})(IX|IV|V?I{0,3}))$";
string input = @"Jon Doe
Jon A. Doe
Jon Anderson Doe
Jon Doe II
Jon Doe, IV
Jon A. Doe, V
Jon A. Doe X
Jon Anderson Doe, VI
Jon Anderson Doe VII";
RegexOptions options = RegexOptions.Multiline;
foreach (Match m in Regex.Matches(input, pattern, options))
{
Console.WriteLine("'{0}' found at index {1}.", m.Value, m.Index);
}
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx