CS 0101 , CS 0111 error[Solved]

// C# 샘플 코드
using System;
using System.Net;
using System.Net.Http;
using System.IO;

namespace ConsoleApp1
{
    class Program
    {
        static HttpClient client = new HttpClient();
        static void Main(string[] args)
        {
            string url = "[api url]"; // URL
            url += "?ServiceKey=" + "[api key]"; // Service Key
            url += "&pageNo=1";
            url += "&numOfRows=10";
            url += "&dataType=XML";
            url += "&fromTmFc=20171101";
            url += "&toTmFc=20171129";

            var request = (HttpWebRequest)WebRequest.Create(url);
            request.Method = "GET";

            string results = string.Empty;
            HttpWebResponse response;
            using (response = request.GetResponse() as HttpWebResponse)
            {
                StreamReader reader = new StreamReader(response.GetResponseStream());
                results = reader.ReadToEnd();
            }

            Console.WriteLine(results);
        }
    }
}