Are there any methods to help me manipulate the query string parameters?

Question

At the moment I'm using all sorts of if statements and substrings in order to manipulate the query string parameters and wanted to know if there was a more efficient way of doing it.

To be precise - I'm needing to add a query string parameter to the current url but if it already exists - I need to just amend it.

To clarify - I CAN achieve this using standard string manipulation methods, and I know how to retrieve the current url etc. I'm just wondering if these wheels are already in place and I'm re-inventing them.

Have a look at this link you might get the answer or alternate http://stackoverflow.com/questions/68624/how-to-parse-a-query-string-into-a-namevaluecollection-in-net — HatSoft, Jun 21 '12 at 09:27

score 2 · Accepted Answer · answered Jun 21 '12 at 09:25

2

 HttpUtility.ParseQueryString(queryString);

For more: http://msdn.microsoft.com/en-us/library/system.web.httputility.parsequerystring.aspx

answered Jun 21 '12 at 09:25

s_nair

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score 1 · Answer 2 · answered Jun 21 '12 at 09:28

1

Probably you are looking for HttpUtility.ParseQueryString().

answered Jun 21 '12 at 09:28

Grzegorz Gierlik

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Rich O'Kelly · Answer 3 · 2012-06-21T09:30:04.317

You could parse the query string as a Dictionary<string,string> and use this to manipulate and then simply format the key value pairs as appropriate when outputting as a query string once more:

public Dictionary<string, string> ToDictionary(string queryString)
{
    return queryString.TrimStart('?').Split('&').Select(qp => qp.Split(',')).ToDictionary(a => a[0], a=> a[1]);
}

public Dictionary<string, string> ToString(Dictionary<string, string> queryString)
{
    return '?' + string.Join('&', queryString.Select(kvp => kvp.Key + '=' + kvp.Value));
}

Are there any methods to help me manipulate the query string parameters?

3 Answers3