Get string from current URL

Question

I am writing an asp.net MVC Application. I have the application send a request to FreeAgent and if the request is successful a code is returned in the redirect of the URL. For example this is a copy of a successful URL.

{
http://localhost:3425/FreeAgent/Home?code=144B2ymEKw3JfB9EDPIqCGeWKYLb9IKc-ABI6SZ0o&state=
}

They have added the ?code=144B2ymEKw3JfB9EDPIqCGeWKYLb9IKc-ABI6SZ0o&state= to my URL I need the bit after the ?code= and before &state=

I can use this to get the URL

string code = Request.Url.AbsoluteUri;

but I need help extracting the code from this

edit: The code will be different each time it is run

Patrick Jones · Accepted Answer · 2014-01-11 17:57:02Z

2

You can use the System.Uri and System.Web.HttpUtility classes

string uri = "http://localhost:3425/FreeAgent/Home?code=144B2ymEKw3JfB9EDPIqCGeWKYLb9IKc-ABI6SZ0o&state=";
string queryString = new System.Uri(uri).Query;
var queryDictionary = System.Web.HttpUtility.ParseQueryString(queryString);

Then the value of the code query parameter will be available in queryDictionary["code"]

answered Jan 11, 2014 at 17:57

Patrick Jones

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2 Comments

user1348463 Over a year ago

So continuing from your example how would i just put: string code = queryDictionary["code"] ?

Patrick Jones Over a year ago

Yeah, exactly. You can access the query parameters like a dictionary and set them to other variables or do whatever you need.

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