C# Byte[] to Url Friendly String

Question

I\'m working on a quick captcha generator for a simple site I\'m putting together, and I\'m hoping to pass an encrypted key in the url of the page. I could probably do this

Answer 1

You're looking for HttpServerUtility.UrlTokenEncode and HttpServerUtility.UrlTokenDecode, in System.Web.

They encode in base64, replacing the potentially dangerous '+' and '/' chars with '-' and '_' instead.

MSDN documentation

Answer 2

Have a look at System.BitConverter.ToString(myByteArray)

Handy for one way encoding for things like hashes but as pointed out by ssg it's not very efficient. I wouldn't recommend it for large amounts of data.