URL解码器c＃asp.net

Question

In a QueryString I have a part that looks like this

...u4w51EEcg8%2bj04e7C....

When I am using HttpUtility.UrlDecode the part "%2b" which represents a "+" just turns into a white space. I'm using HttpUtility.UrlEncode in the first place to encode the string.

Does anyone have any clue to what is going on?

Answer 1

Are you decoding twice? For convenience, a + sign in a URL decodes to (space, 0x20). While %2b should decode to + , decoding that will give you .

EDIT: Just saw your self-answer, and yeah, always check whether your getter functions / properties automatically decode for you. Double-decoding usually doesn't produce the desired result, and can even lead to security risks.

Answer 2

看起来无论“ Request.QueryString []”如何解码，所以发生的事情是我对QueryString进行了2次解码，这使“ +”成为空白。