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

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 :) http://stackoverflow.com/questions/4611031/convert-json-string-to-c-sharp-object — Arkadiusz Raszeja, May 18 '17 at 08:17
Why are 2K+ rep users answering this obvious duplicate? Read [answer]. — CodeCaster, May 18 '17 at 08:19
No, json string as key-value pair. I want convert key-value pair to object class — Thoại Nguyễn, May 18 '17 at 08:20
@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, May 18 '17 at 08:22

score 1 · Answer 1 · answered May 18 '17 at 08:18

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 '17 at 08:18

BRAHIM Kamel

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. – Thoại Nguyễn May 18 '17 at 08:33

score 0 · Answer 2 · answered May 18 '17 at 08:18

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 '17 at 08:18

Neil

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`... – Chris May 18 '17 at 08:21
Yes. This' s format key/value – Thoại Nguyễn May 18 '17 at 08:31

score 0 · Answer 3 · answered May 18 '17 at 08:18

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 '17 at 08:18

Elie

3 Answers3