How to convert this sequence to this hash?

Hi there,

I'm consuming a webservice from my application in C# .net (2.0) that return values (as string) like this:

%23k.%0d%16%c4%8a%18%efG%28%b9c%12%b7%f1%e2%e7j%93

I know that the real value for that is:

236B2E0D16C48A18EF4728B96312B7F1E2E76A93

But I don't know how to convert from the returned value to the real value.

Any thoughts?

Anyway, thanks for your time. Cheers.

From stackoverflow

• I'm not certain of this, but try using the System.Web.HttpUtility.UrlDecode method

  Matías : Tried, but no... Thanks anyway

• Going down the line:

  If you encounter '%' copy the next two characters

  Otherwise take the ascii code of the character found and output as hex

  %23  => 23
  k    => 6B
  .    => 2E
  %0d  => 0D
  

  ASCII Table

  But in code I'm pretty sure this will work:

  char c = 'k';
  int ascii = (int)c;
  string hex = ascii.ToString("X2");
  

• Thanks for the info Rob. If anyone wants the full method here it is:

  static private string convertInfoHash(string encodedHash)
  {
      string convertedHash = string.Empty;
      for (int i = 0; i < encodedHash.Length; i++)
      {
          if (encodedHash[i] == '%')
          {
              convertedHash += String.Format("{0}{1}",encodedHash[i + 1],encodedHash[i + 2]);
              i += 2;
          }
          else
          {
              int ascii = (int)encodedHash[i];
              convertedHash += ascii.ToString("X2");
  
          }
      }
  
      return convertedHash;
  }