Fan.Sys.FanStr.equalsIgnoreCase C# (CSharp) Method

        public static bool equalsIgnoreCase(string a, string b)
        {
            if (a == b) return true;

              int an   = a.Length;
              int bn   = b.Length;
              if (an != bn) return false;

              for (int i=0; i<an; i++)
              {
            int ac = a[i];
            int bc = b[i];
            if ('A' <= ac && ac <= 'Z') ac |= 0x20;
            if ('A' <= bc && bc <= 'Z') bc |= 0x20;
            if (ac != bc) return false;
              }
              return true;
        }

 public new bool Equals(object x, object y)
 {
     return(FanStr.equalsIgnoreCase((string)x, (string)y));
 }