using System;

using System.Collections;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Net;

using System.IO;

using System.Threading.Tasks;

​

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

using Newtonsoft.Json.Converters;

using Newtonsoft.Json.Serialization;

// https://stackoverflow.com/questions/43833899/how-to-convert-jarray-to-keyvaluepair-structure-in-c

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Environment version: " + Environment.Version);

        Console.WriteLine("Json.NET version: " + typeof(JsonSerializer).Assembly.FullName);

        Console.WriteLine("");

​

        var array = JArray.Parse(GetJson());

        var pairs = array

            // Cast array items from JToken to JObject.  

            // You could filter instead using `OfType<JObject>() if nulls might be present

            .Cast<JObject>()

            // Convert the first and second property values to a KeyValuePair

            .Select(o => new KeyValuePair<string, string>((string)o.PropertyValues().ElementAtOrDefault(0), 

                                                          (string)o.PropertyValues().ElementAtOrDefault(1)))

            .ToList();

​

        var dict = pairs.ToDictionary(p => p.Key, p => p.Value);

​

​

        Console.WriteLine("Pairs array: ");

        Console.WriteLine(JsonConvert.SerializeObject(pairs, Formatting.Indented));     

        Console.WriteLine("\nDictionary: ");

        Console.WriteLine(JsonConvert.SerializeObject(dict, Formatting.Indented));      

    }

    static string GetJson()

    {

        var json = @"[

     {""Prop1"":""key1"", ""Prop2"":""value1""}, 

     {""Prop1"":""key2"", ""Prop2"":""value2""}, 

     {""Prop1"":""key3"", ""Prop2"":""value3""}

]";

        return json;

    }

}