using System;

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

public class Program

{

    public static void Main()

    {

        var arrStr = "[78293270, 847744, 32816430]";

        GetThem(arrStr);

        var aStr = "[\"aa\", \"bb\", \"cc\", \"2018-03-19T19:38:02.929-06:00\"]";

        GetThem(aStr);

        GetProperties(aStr);

    }

    public static void GetThem(string aStr)

    {

        JArray jArray = JArray.Parse(aStr);

        int i = 1;

        foreach (JValue obj in jArray)

        {

            if (obj.Type == JTokenType.Date)Console.WriteLine("{0}:{1}", i++.ToString("00"), obj.ToString("yyyy-MM-ddTHH:mm:ss.fffzzz"));   

            else Console.WriteLine("{0} {1}", i++.ToString("00"), obj); 

        }

    }

    public static void GetProperties(string aStr)

    {

        dynamic jArray = JArray.Parse(aStr);

        dynamic datarow = jArray[0];

        foreach (var prop in datarow.Properties())

        {

            if (prop.Value != null)

            {

                // https://www.newtonsoft.com/json/help/html/T_Newtonsoft_Json_Linq_JTokenType.htm

                if (prop.Value.Type == JTokenType.Date)

                    Console.WriteLine("{0} {1}", prop.Name, prop.Value.ToString("yyyy-MM-ddTHH:mm:ss.fffzzz"));

                else

                    Console.WriteLine("{0} {1}", prop.Name, prop.Value.ToObject<object>());

            } else

            {

                Console.WriteLine("{0} {1}", prop.Name, "null");

            }

        }

​

    }

}