Get string from Server.UrlEncode as uppercase

问题

I want its output as uppercase. This is what I get on Server.UrlEncode("http://"):

http%3a%2f%2f

but I need:

http%3A%2F%2F

Is there built-in solution in C#?

---

The url encoded shall serve as signature base string (input to signature algorithm) to create digest (hash). The hash will then be verified by other system (java,php,etc), so they need to recreate the hash by signature reconstruction first.

回答1:

This will uppercase all escaped characters in your string.

string url = "http://whatever.com/something";
string lower = Server.UrlEncode(url);
Regex reg = new Regex(@"%[a-f0-9]{2}");
string upper = reg.Replace(lower, m => m.Value.ToUpperInvariant());

回答2:

Uri.EscapeDataString("http://")

This code return

http%3A%2F%2F

回答3:

This is very easy

Regex.Replace( encodedString, @"%[a-f\d]{2}", m => m.Value.ToUpper() )

I.e. replace all hex letter-digit combinations to upper case

回答4:

Assuming "http" is always the first four characters then you simply split the string after "http", UrlEncode that part and then call ToUpper() on it. Then join back together with "http" as your prefix.

来源：https://stackoverflow.com/questions/6371086/get-string-from-server-urlencode-as-uppercase