1: public string CreateMD5(string inputStr)

   2: {

   3:     MD5 md5 = MD5.Create();

   4:     byte[] byteChar = md5.ComputeHash(Encoding.Default.GetBytes(inputStr));

   5:  

   6:     StringBuilder sb = new StringBuilder();

   7:     foreach (byte b in byteChar)

   8:     {

   9:        sb.Append(b.ToString("x2"));

  10:     }

  11:     return sb.ToString();

  12: }