using System;

using System.Collections;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Runtime.Serialization.Formatters;

using System.IO;

using System.Data;

using System.ComponentModel.DataAnnotations;

using System.Globalization;

using System.Reflection;

using System.Collections.ObjectModel;

​

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

using Newtonsoft.Json.Converters;

using Newtonsoft.Json.Serialization;    

​

public class ActiveDbPrimaryServer

{

    public string serverName { get; set; }

    public string serverAddress { get; set; }

}

​

public class Config

{

    public string mode { get; set; }

    public string resourceName { get; set; }

    public ActiveDbPrimaryServer activeDbPrimaryServer { get; set; }

    public string activeDbCatalog { get; set; }

    public string activeDBUserId { get; set; }

    public string activeDBPassword { get; set; }

}

​

public class Step

{

    public string stepsType { get; set; }

    public string wizardType { get; set; }

    public Config config { get; set; }

}

​

public class Root

{

    public List<Step> steps { get; set; }

}    

​

class TestClass

{

    public static void Test()

    {

        //

        Console.WriteLine("\n\nSimple navigation");

        var jsonRoot = JsonConvert.DeserializeObject<Root>(GetJson());

        var activesDBs = jsonRoot.steps.Select( x=> x.config.activeDbPrimaryServer);        

        activesDBs.Dump();

        // Simple object navigation//

        Console.WriteLine("\n");

        foreach(var activesDB in activesDBs){

            Console.WriteLine(activesDB.serverAddress);

            Console.WriteLine(activesDB.serverName);

        }

​

        // This one is expect to display null. 

        Console.WriteLine("\n\nnull expected. Wrong deserialization type.");

        var jsonDB = JsonConvert.DeserializeObject<ActiveDbPrimaryServer>(GetJson());

        jsonDB.Dump();

​

        //Partial

        Console.WriteLine("\n\nLet's try partial. ");

        JObject rootObj = JObject.Parse(GetJson());

        // get JSON result objects into a list

        IList<JToken> results = rootObj["steps"].Children() // Step is a list so we use `.Children()` 

                                       ["config"]["activeDbPrimaryServer"].ToList();

        IList<ActiveDbPrimaryServer> dbResults = new List<ActiveDbPrimaryServer>();

        foreach (JToken result in results)

        {

            // JToken.ToObject is a helper method that uses JsonSerializer internally

            ActiveDbPrimaryServer dbResult = result.ToObject<ActiveDbPrimaryServer>();

            dbResults.Add(dbResult);

        }

​

        dbResults.Dump();

    }   

​

    static string GetJson()

    {

        return @"{

  ""steps"": [

    {

      ""stepsType"": ""runWizard"",

      ""wizardType"": ""demoServer"",

      ""config"": {

        ""mode"": ""add"",

        ""resourceName"": ""demo server 1"",

        ""activeDbPrimaryServer"": {

          ""serverName"": ""abc"",

          ""serverAddress"": ""abc.demo.local""

        },

        ""activeDbCatalog"": ""demoActiveDB"",

        ""activeDBUserId"": ""sa"",

        ""activeDBPassword"": ""xyz"",

      }

    }

  ]

}";

    }

}

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Environment version: {0} ({1})", System.Runtime.InteropServices.RuntimeInformation.FrameworkDescription , GetNetCoreVersion());

        Console.WriteLine("{0} version: {1}", typeof(JsonSerializer).Assembly.GetName().Name,  typeof(JsonSerializer).Assembly.FullName);

        Console.WriteLine();

​

        try

        {

            TestClass.Test();

        }

        catch (Exception ex)

        {

            Console.WriteLine("Failed with unhandled exception: ");

            Console.WriteLine(ex);

            throw;

        }

    }

​

    public static string GetNetCoreVersion()

    {

        //https://techblog.dorogin.com/how-to-detect-net-core-version-in-runtime-ecd65ad695be

        //

        var assembly = typeof(System.Runtime.GCSettings).GetTypeInfo().Assembly;

        var assemblyPath = assembly.Location.Split(new[] { '/', '\\' }, StringSplitOptions.RemoveEmptyEntries);

        int netCoreAppIndex = Array.IndexOf(assemblyPath, "Microsoft.NETCore.App");

        if (netCoreAppIndex > 0 && netCoreAppIndex < assemblyPath.Length - 2)

            return assemblyPath[netCoreAppIndex + 1];

        return null;

    }

}

​