Create a PagerDuty maintenance window using C#

create_maintenance_window.cs

using System;
using System.IO;
using System.Net;
using System.Text;

namespace Examples.System.Net
{
    public class WebRequestPostExample
    {
        public static void Main()
        {
            var httpWebRequest = (HttpWebRequest)WebRequest.Create("https://ENTER_YOUR_SUBDOMAIN_HERE.pagerduty.com/api/v1/maintenance_windows/");
            httpWebRequest.ContentType = "application/json";
            httpWebRequest.Method = "POST";
            httpWebRequest.Headers["Authorization"] = "Token token=ENTER_API_KEY_HERE";

            string UserId = "ENTER_USER_ID_HERE";
            string ServiceId = "ENTER_SERVICE_ID_HERE";

            using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
            {
                string json = "{\"maintenance_window\": {\"start_time\":\"2016-06-17\"," +
                              "\"end_time\":\"2016-06-20\"," +
                              "\"description\":\"test\"," +
                              "\"service_ids\":[\"" + ServiceId + "\"]}," +
                              "\"requester_id\": \"" + UserId + "\"}";

                streamWriter.Write(json);
                streamWriter.Flush();
                streamWriter.Close();

                var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
                using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
                {
                    var result = streamReader.ReadToEnd();
                    Console.WriteLine(result);
                }
            }
        }
    }
}