How do I convert a querystring to a json string?

Question

Using server-side C#, how can I convert a querystring to a JSON string of keys and values? For example, I want to convert

"ID=951357852456&FNAME=Jaime&LNAME=Lopez"

to

{ "ID":"951357852456" , "FNAME":"Jaime" , "LNAME":"Lopez" }

I know how to manually parse and format but, before starting down that road, I thought I'd ask since there might be a library that does it better. Thanks!

L.B · Accepted Answer · 2013-06-25 19:33:52Z

32

This gives the exactly same json you want

var dict = HttpUtility.ParseQueryString("ID=951357852456&FNAME=Jaime&LNAME=Lopez");
var json = new JavaScriptSerializer().Serialize(
                    dict.AllKeys.ToDictionary(k => k, k => dict[k])
           );

edited Jun 25, 2013 at 19:33

answered Sep 14, 2012 at 17:11

L.B

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8 Comments

Arman Bimatov Over a year ago

How do you handle arrays?

Rafael Herscovici Over a year ago

The resultset of your answer does not match the OP's requested resultset.

Rafael Herscovici Over a year ago

Accepted answer dosent mean that it does exactly what was asked. the result of your code would be something like { "key": "keyName", "val": "value"} while the OP asked for { "keyName": " value" }

L.B Over a year ago

@Dementic the result of your code would be ......, NO, What is so hard to understand, I just rerun above code and got {"ID":"951357852456","FNAME":"Jaime","LNAME":"Lopez"}. Next time please make sure if you don't want to downvote a correct answer.

Skary Over a year ago

@L.B This answer is not precise, it will not work if in the query string there is an array. Maybe it's accepptable but is better if the answer specify this limitation

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Bastien Vandamme · Accepted Answer · 2020-09-29 09:50:31Z

7

It also possible to use

var collection = HttpUtility.ParseQueryString(query);
Newtonsoft.Json.JsonConvert.SerializeObject(collection.AllKeys.ToDictionary(y => y, y => collection[y]));

answered Sep 29, 2020 at 9:50

Bastien Vandamme

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Comments

JSK NS · Accepted Answer · 2012-09-14 17:07:16Z

-3

You can use jQuery to do this: jQuery.Param.

answered Sep 14, 2012 at 17:07

JSK NS

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1 Comment

Justin Self Over a year ago

OP is asking for a server side solution.

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