How to do safe base64 url encoding in ASP .NET, I came into a problem of url encoding in IIS 7 where it does not like “+”, “/” in the Url. Basically a Url that looks like of like this

http://fake.abc/TIRlcEq0umjO6uJqtqvnkUGntUzv19rK+8mcvPK5qL1bwEZtEUqTlc3iF/TomuXU746Il5IF2iN9SeYuYDqt6SQzfdrv+Ltug2KZteKlYawc=

I know you may say what is this??? Its actually some kind of encrypted data that is in base64, but since IIS 7 does not like “+” or “/” even if its url encoded.

So I made a Utility class string extension method that just simply replaces the characters with “-” and “_”

Here is the code so maybe someday it would help you out also.