Regex.CompileToAssembly Method (RegexCompilationInfo[], AssemblyName)

using System;
using System.Collections.Generic;
using System.Reflection;
using System.Text.RegularExpressions;

public class RegexCompilationTest
{
   public static void Main()
   {
      RegexCompilationInfo expr;
      List<RegexCompilationInfo> compilationList = new List<RegexCompilationInfo>();

      // Define regular expression to detect duplicate words
      expr = new RegexCompilationInfo(@"\b(?<word>\w+)\s+(\k<word>)\b", 
                 RegexOptions.IgnoreCase | RegexOptions.CultureInvariant, 
                 "DuplicatedString", 
                 "Utilities.RegularExpressions", 
                 true);
      // Add info object to list of objects
      compilationList.Add(expr);

      // Define regular expression to validate format of email address
      expr = new RegexCompilationInfo(@"^(?("")(""[^""]+?""@)|(([0-9A-Z]((\.(?!\.))|[-!#\$%&'\*\+/=\?\^`\{\}\|~\w])*)(?<=[0-9A-Z])@))" + 
                 @"(?(\[)(\[(\d{1,3}\.){3}\d{1,3}\])|(([0-9A-Z][-\w]*[0-9A-Z]\.)+[A-Z]{2,6}))$", 
                 RegexOptions.IgnoreCase | RegexOptions.CultureInvariant, 
                 "EmailAddress", 
                 "Utilities.RegularExpressions", 
                 true);
      // Add info object to list of objects
      compilationList.Add(expr);

      // Generate assembly with compiled regular expressions
      RegexCompilationInfo[] compilationArray = new RegexCompilationInfo[compilationList.Count];
      AssemblyName assemName = new AssemblyName("RegexLib, Version=1.0.0.1001, Culture=neutral, PublicKeyToken=null");
      compilationList.CopyTo(compilationArray); 
      Regex.CompileToAssembly(compilationArray, assemName);                                                 
   }
}

using System;
using Utilities.RegularExpressions;

public class CompiledRegexUsage
{
   public static void Main()
   {
      string text = "The the quick brown fox  fox jumped over the lazy dog dog.";
      DuplicatedString duplicateRegex = new DuplicatedString(); 
      if (duplicateRegex.Matches(text).Count > 0)
         Console.WriteLine("There are {0} duplicate words in \n   '{1}'", 
            duplicateRegex.Matches(text).Count, text);
      else
         Console.WriteLine("There are no duplicate words in \n   '{0}'", 
                           text);
   }
}
// The example displays the following output to the console:
//    There are 3 duplicate words in
//       'The the quick brown fox  fox jumped over the lazy dog dog.'