Generate a GUID from a 24-character string and vice versa

See more:

C#

encoding

cryptography

bytes

I am trying to create a GUID from a string that looks like this "ZgEKpwQbNswAAAFgf2R4ugv.".

24-character string => Guid, AND Guid => 24-character string

The problem is that the string is 24-bytes array and to generate a GUID I need a 16-bytes array. The string is from a character collection of 64 characters, so the minimum representation of the 24-bytes string is 18-bytes array.

Is there a way tackle this issue?

What I have tried:

If you implement the folloowing code, you will find that the bytes array for the string is of 24-bytes and cannot be used to generate a guid.

string data = "ZgEKpwQbNswAAAFgf2R4ugv.";  
            byte[] databytes = Encoding.ASCII.GetBytes(data);  
            Guid g = new Guid(databytes); // not possible   
  
            byte[] reversedguid = g.ToByteArray();  
            Console.WriteLine(Encoding.Default.GetString(reversedguid));