server.htmlencode of asp.net equivalent in asp.net mvc

Question

I have a ASP.NET MVC controller which is making call to another service using HttpClient class.

             var url = "some url";
             var client = new HttpClient();
             var result= client.GetAsync(url);

The URL I am sending contains some special characters. How can encode special characters in ASP.NET MVC controller?

Thanks!!1

Answer 1

尝试这个：

url = HttpUtility.UrlEncode(url);

Answer 2

As you are considering a URL that will be used as such for a request (with HttpClient.getAsync ) -- not as an argument within another URL -- you should use Uri.EscapeUriString .

Here is a comparison of three methods for the following URL:

var url = "http://some url?data=x y+z&user=1#ok";

HttpUtility.UrlEncode

Console.WriteLine(HttpUtility.UrlEncode(url));

http%3a%2f%2fsome+url%3fdata%3dx+y%2bz%26user%3d1%23ok

Obviously, this is not desired: the URL got damaged with / escaped, a + entered in the path, ...etc. The method seems useful for the query part of the URL, but not for the whole lot.

HttpUtility.UrlPathEncode

Console.WriteLine(HttpUtility.UrlPathEncode(url));

http://some%20url?data=x y+z&user=1#ok

This looks useful, although the space is a bit of a problem in the query part (notice the broken hyperlinking here, although browser can deal with it). But more importantly, the method is being deprecated:

Do not use; intended only for browser compatibility. Use UrlEncode .

Uri.EscapeUriString

Console.WriteLine(Uri.EscapeUriString(url));

http://some%20url?data=x%20y+z&user=1#ok

This seems to do the job well: %20 is an escape sequence that all modern browsers should support, also when occurring in the query part of the URL.

Answer 3

There is no need it encoding in Razor View Engine starting from 3rd version, and it's very convenient. Instead if you want to use tags you should use:

@Html.Raw(myString)

So basically just using Razor comes with encoding by default.

Answer 4

You should use HttpUtility.UrlPathEncode

When you use url = HttpUtility.UrlEncode(url) it doesn't work fine with spaces.