HttpUtility.UrlEncode不对+等字符进行编码

Question

I have a string which is encrypted which looks like this

Pfx32q+xLq4R+VocXy4IC8aQNdmFqdA284THap54Bl4=

On encrypting this string we call the HttpUtility.UrlEncode("Pfx32q+xLq4R+VocXy4IC8aQNdmFqdA284THap54Bl4=") passing the encrypted string as a parameter this returns a value

Pfx32q%2BxLq4R%2BVocXy4IC8aQNdmFqdA284THap54Bl4%3D

where in + is replace with %2 etc and so on on my development system but when the same code is run on a production server the plus does not get encoded instead it remains as + .

We are not able to point out what really is causing this . Is there a scenario or a case where in on calling of the HttpUtility.UrlEncode method the characters like + do not get encoded ?

Answer 1

Had the same problem. Converted the encrypted string to Base64 first and then UrlEncoded it.

    string urlOut = HttpUtility.UrlEncode(Base64Encode("Pfx32q+xLq4R+VocXy4IC8aQNdmFqdA284THap54Bl4="));

    string urlIn = Base64Decode(HttpUtility.UrlDecode(urlOut));

    public static string Base64Encode(string plainText)
    {
        var plainTextBytes = Encoding.UTF8.GetBytes(plainText);
        return Convert.ToBase64String(plainTextBytes);
    }

    public static string Base64Decode(string base64EncodedData)
    {
        var base64EncodedBytes = Convert.FromBase64String(base64EncodedData);
        return Encoding.UTF8.GetString(base64EncodedBytes);
    }