URL Encode all non alpha numeric in C#

Question

I need to fully URL Encode an email address.

HttpUtility.UrlEncode seems to ignore certain characters such as ! and .

I need to pass an email address in a ur

Answer 1

Unless I am mistaken, URL Encoding is simply the percent sign followed by the ASCII number (in hex), so this should work...

Dim Encoded as New StringBuilder()

For Each Ch as Char In "something+me@example.com"
    If Char.IsLetterOrDigit(Ch)
         Encoded.Append(Ch)
    Else
         Encoded.Append("%")
         Dim Byt as Byte = Encoding.ASCII.GetBytes(Ch)(0)
         Encoded.AppendFormat("{0:x2}", Byt)
    End If
Next

The above code results in something%2Bme%40example.com