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Uri uri = new Uri(redirectionUrl); NameValueCollection col = HttpUtility.ParseQueryString(uri.Query)

uri.Query is already decoded - so is there any way I can prevent ParseQueryString decoding it again?

Apart from that - is there another method to retrieve a name value collection from a Uri without modifying any components?

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2 Answers 2

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Encoding the uri.Query before passing it to ParseQueryString is the first thing that comes to my head.

UPDATE

Just checked the ParseQueryString method with Reflector: it assumes that the query string is encoded and you can't do anything with it... Bummer. So I think you need to parse it manually (there are plenty of ready-to-use algorithms on the Web).

Alternatively you could encode your query string properly (taking into account variable names and all special characters) before passing it to ParseQueryString method.

-- Pavel

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I can't as uri.Query includes the variable name and ? =
I've updated my answer. Hope this will help you to do a right decision.
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I have faced the same problem. The solution is adding the second parameter - the encoding. It seams that everything works if you set UTF8 encoding.

NameValueCollection col = HttpUtility.ParseQueryString(uri.Query, Encoding.UTF8)
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UTF8 encoding is used by default, so adding it explicitly does not have any effect: msdn.microsoft.com/en-us/library/ms150046(v=vs.110).aspx
This option does not have any effect
This unfortunately does not have any effect. You should encode your query string properly prior to passing it to ParseQueryString.

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