Which Characters have to be percent-encoded for a URI?

Question

Which characters have to be percent-encoded to have a valid network address? I want to escape all invalid chars, which are reserved like the Hash("#") Character. My goal is to download Files through a Webclient on my FTP-Server.

Thank you very much.

Webclient.DownloadFile(FTPObject.FullPath, Path)

The error message I've got through the Download File Call was a System.Net.WebException; Errorcode (550) ~ File Not Found.

This was for the Case I didn't percent-encode the Hash.

../Test[#][Acoustic Version].mp3

score 1 · Accepted Answer · answered Sep 10 '19 at 13:22

For a literal answer to your question, see:
Characters allowed in a URL

Taken literally, your question should be closed as a duplicate.

But as you use VB.NET, the correct answer is not to implement the encoding manually, but use the built-in .NET functionality.

See Encoding parameters for a URL
Or even better, see How to reliably build a URL in C# using the parts?

Which Characters have to be percent-encoded for a URI?

1 Answers1