using System;

public class Program

{

    public static void Main()

    {

         var webRequest = System.Net.WebRequest.Create(new Uri("https://www.alphavantage.co/query?function=TIME_SERIES_DAILY&symbol=MSFT&apikey=demo"));

                    webRequest.Method = "GET";

                    webRequest.ContentType = "application/json";

​

                    //Get the response 

                    System.Net.WebResponse wr = webRequest.GetResponseAsync().Result;

                    System.IO.Stream receiveStream = wr.GetResponseStream();

                    System.IO.StreamReader reader = new System.IO.StreamReader(receiveStream);

        string resp = reader.ReadToEnd();

​

        Newtonsoft.Json.Linq.JObject jobj = Newtonsoft.Json.Linq.JObject.Parse(resp);

        //This prints the child of the root object with the key "Meta Data"

        //Console.WriteLine(jobj["Meta Data"].ToString());

        //This prints the child of the root object with the key "Time Series (Daily)"

        //Console.WriteLine(jobj["Time Series (Daily)"].ToString());    

​

        //This prints the child of the "Time Series (Daily)" object with the key "2018-12-07"

        Console.WriteLine(jobj["Time Series (Daily)"]["2018-12-07"].ToString());    

​

    }

}