Wildcard string compare (globbing)

   public class MString
   {
      /// <summary>
      /// Function to compare two strings, where strA may contain wildcard characters '*' and 
      /// '?'. http://en.wikipedia.org/wiki/Wildcard_character
      /// </summary>
      /// <param name="strA">string which may contain wildcards, may be empty, must not be null</param>
      /// <param name="strB">string to compare to, no wildcard processing, may be empty, must not be null</param>
      /// <param name="ignoreCase">true = ignore upper/lower case, false = don't ignore case</param>
      /// <returns>true = match, false = non-match</returns>
      public static bool CompareWWc(string strA, string strB, bool ignoreCase)
      {
         if (ignoreCase)
            return CompareWWc(strA.ToLower(), strB.ToLower());
         else 
            return CompareWWc(strA, strB);
      }
 

      /// <summary>
      /// Recursive function to compare two strings, where strA may contain wildcard characters 
      /// '*' and '?'. http://en.wikipedia.org/wiki/Wildcard_character
      /// </summary>
      /// <param name="strA">string which may contain wildcards, may be empty, must not be null</param>
      /// <param name="strB">string to compare to, no wildcard processing, may be empty, must not be null</param>
      /// <returns>true = match, false = non-match</returns>
      public static bool CompareWWc(string strA, string strB)
      {
         // Top of loop to scan across strA (and strB)
         for (int i = 0; i < strA.Length; i++)
         {
            // Special processing when we hit a '*' in strA
            if (strA[i] == '*')
            {
               // If the '*' is at the end of strA then result = true irrespective of strB
               if (i == strA.Length - 1)
                  return true;  
 
               // Do recursive calls to try to find a match somewhere to the right in strB
               strA = strA.Substring(i + 1);  // The part of strA beyond the '*'
               for (int j = i; j < strB.Length; j++)
                  if (CompareWWc(strA, strB.Substring(j)))
                     return true;
               return false;
            }
 
            // Normal processing for non-'*' characters in strA
            if (i >= strB.Length || (strA[i] != strB[i] && strA[i] != '?'))
               return false;
         }
 
         // We've reached the end of strA and the last character is not '*'
         return strA.Length == strB.Length;
      }
 
   }

         if (!MString.CompareWWc("", ""))
            Console.WriteLine("Something wrong!");
 

         if (!MString.CompareWWc("something", "something"))
            Console.WriteLine("Something wrong!");
 
         if (MString.CompareWWc("something", "zomething"))
            Console.WriteLine("Something wrong!");
         
         if (MString.CompareWWc("something", "some"))
            Console.WriteLine("Something wrong!");
         
         if (MString.CompareWWc("something", "something else"))
            Console.WriteLine("Something wrong!");
 

         if (!MString.CompareWWc("s?m?th???", "something"))
            Console.WriteLine("Something wrong!");
         
         if (MString.CompareWWc("s?m?th???", "somethin"))
            Console.WriteLine("Something wrong!");
 

         if (!MString.CompareWWc("*", ""))
            Console.WriteLine("Something wrong!");
         
         if (!MString.CompareWWc("*", "nonsense"))
            Console.WriteLine("Something wrong!");
         
         if (!MString.CompareWWc("non*", "nonsense"))
            Console.WriteLine("Something wrong!");
 

         if (!MString.CompareWWc("*nonsense", "nonsense"))
            Console.WriteLine("Something wrong!");
 
         if (!MString.CompareWWc("non*nse", "nonsense"))
            Console.WriteLine("Something wrong!");
         
         if (MString.CompareWWc("non*nse", "nonsenze"))
            Console.WriteLine("Something wrong!");
         
         if (!MString.CompareWWc("non*n?e", "nonsense"))
            Console.WriteLine("Something wrong!");
 

         if (!MString.CompareWWc("n*on*nse", "nonsense"))
            Console.WriteLine("Something wrong!");
 
         if (!MString.CompareWWc("n*n*nse", "nonsense"))
            Console.WriteLine("Something wrong!");
 
         if (MString.CompareWWc("*non*nse", "nonsenze"))
            Console.WriteLine("Something wrong!");
 
         if (!MString.CompareWWc("n*n*n?e", "nonsense"))
            Console.WriteLine("Something wrong!");
      }