Get individual query parameters from Uri

Question

I have a uri string like: http://example.com/file?a=1&b=2&c=string%20param

Is there an existing function that would convert query parameter string into a dictionary same way as ASP.NET Context.Request does it.

I'm writing a console app and not a web-service so there is no Context.Request to parse the URL for me.

I know that it's pretty easy to crack the query string myself but I'd rather use a FCL function is if exists.

Answer 1

You can use:

System.Web.HttpUtility.ParseQueryString(url)

Answer 2

You could reference System.Web in your console application and then look for the Utility functions that split the URL parameters.

Answer 3

This should work:

string url = "http://example.com/file?a=1&b=2&c=string%20param";
string querystring = url.Substring(url.IndexOf('?'));
System.Collections.Specialized.NameValueCollection parameters = 
   System.Web.HttpUtility.ParseQueryString(querystring);

According to MSDN. Not the exact collectiontype you are looking for, but nevertheless useful.

Edit: Apparently, if you supply the complete url to ParseQueryString it will add 'http://example.com/file?a' as the first key of the collection. Since that is probably not what you want, I added the substring to get only the relevant part of the url.

Answer 4

Have a look at HttpUtility.ParseQueryString() It'll give you a NameValueCollection instead of a dictionary, but should still do what you need.

The other option is to use string.Split().

    string url = @"http://example.com/file?a=1&b=2&c=string%20param";
    string[] parts = url.Split(new char[] {'?','&'});
    ///parts[0] now contains http://example.com/file
    ///parts[1] = "a=1"
    ///parts[2] = "b=2"
    ///parts[3] = "c=string%20param"