ASP.NET MVC parse URL query part

I want something to turn ?a=5&b=8 part of a URL into a dictionary { a:5, b:8 }.

Is there such method in .net or am I on my own?

I need to parse query part so that I can implement my own URL decoding. The problem is that Firefox uses different encoding (UTF8 or ISO-8859-1) depending on the used alphabet.

Example:

Firefox encodes as following:

-                                          v   v
http://localhost:8041/Reforge.aspx?name=ArcânisГ 
Firefox turns into  
http://localhost:8041/Reforge.as开发者_运维技巧px?name=Arc%C3%A2nis%D0%93`  

Notice that UTF8 encoding is used for both non-ASCII characters.

-                                          v
http://localhost:8041/Reforge.aspx?name=Arcâ
Firefox turns into
http://localhost:8041/Reforge.aspx?name=Arc%E2

Notice that ISO-8859-1 (Latin-1) encoding is used for the non-ASCII character.

Here is a related question: ASP.NET MVC does not understand mixed url encoding (UTF-8/Latin-1)

Request.QueryString is a NameValueCollection that is like a dictionary.

It can contain multiple values for the same key.

If "?a=5&b=8" not come from querystring you can use HttpUtility.ParseQueryString method to get a NameValueCollection

If you want a true dictionary:

var d = new Dictionary<String,Object>();
this.Request.QueryString.CopyTo(d);

Maybe a custom modelbinder to handle dictionaries? It seems like relying on the querystring, while perfectly valid, goes against the spirit of the framework. It also may make testing your action a little more difficult.

My first thought was that this was already handled by the default modelbinder facilites, but this doesn't appear to be the case. That said, I haven't tried it but this is where I'd start:

An Intuitive Dictionary Model Binder for ASPnet MVC