How to parse json key - value to object C# from Request.Properties["MS_QueryNameValuePairs"] [duplicate]

Question

I have string json as

"[{\"Key\":\"a\",\"Value\":\"1\"},{\"Key\":\"b\",\"Value\":\"2\"}}]"

I want parse to object

class abc{
public string a{get; set;}
public string b{get; set;}
}

Please, help me

do you get some error, or something? I hope you tried to find solution by yourself, right :) stackoverflow.com/questions/4611031/… — Arkadiusz Raszeja
– Arkadiusz Raszeja, Commented May 18, 2017 at 8:17
Why are 2K+ rep users answering this obvious duplicate? Read How to Answer. — CodeCaster
– CodeCaster, Commented May 18, 2017 at 8:19
No, json string as key-value pair. I want convert key-value pair to object class — Thoại Nguyễn
– Thoại Nguyễn, Commented May 18, 2017 at 8:20
@CodeCaster: That isn't quite an exact dupe - there may be one out there that is but in this case the complexity is that rather than having json like {Propety: Value} it is {Key: "propertyname", Value: "Value"} which is a harder question. — Chris
– Chris, Commented May 18, 2017 at 8:22

BRAHIM Kamel · Accepted Answer · 2017-05-18 08:18:57Z

1

you have to Newtonsoft Library and use

var dict=  JsonConvert.DeserializeObject<Dictionary<string,int>>("[{\"Key\":\"a\",\"Value\":\"1\"},{\"Key\":\"b\",\"Value\":\"2\"}}]");

answered May 18, 2017 at 8:18

BRAHIM Kamel

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1 Comment

Thoại Nguyễn Over a year ago

Additional information: Cannot deserialize the current JSON array (e.g. [1,2,3]) into type 'System.Collections.Generic.Dictionary`2[System.String,System.Int32]' because the type requires a JSON object (e.g. {"name":"value"}) to deserialize correctly.

Neil · Accepted Answer · 2017-05-18 08:18:32Z

0

Json.NET is a Popular high-performance JSON framework for .NET

Install this nuget package then it's as simple as:

var json = "[{\"Key\":\"a\",\"Value\":\"1\"},{\"Key\":\"b\",\"Value\":\"2\"}}]";

var items = JsonConvert.DeserializeObject<List<abc>>(json);

answered May 18, 2017 at 8:18

Neil

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2 Comments

Chris Over a year ago

Will that actually cope with the format being Key/value attributes rather than the more usual {a: Value} type syntax? If I run the code I get null for a and b...

Thoại Nguyễn Over a year ago

Yes. This' s format key/value

Elie · Accepted Answer · 2017-05-18 08:18:56Z

0

I don't know about parsing to a defined object. However you can use A .Net library called Newtonsoft JObject o = JObject.Parse(x.ToString());

With JObject being an instance of Newtonsoft.JSON.Linq.JObject

answered May 18, 2017 at 8:18

Elie

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