Dank class for showing how to send a graphquery in C#

Dank.cs

using System;
using System.Net;
using System.Text;
using System.IO;
using System.Collections;
using System.Net.Http;
using System.Threading.Tasks;
using System.Text.Json.Serialization;
using System.Text.Json;

namespace LTW.Screens
{
    public static class Dank
    {
        public const string QueryValue = @"
query ($search: String) {
    Media (search: $search) {
      id
      title {
        romaji
        english
        native
      }
      type
      format
      status
      description
      episodes
      bannerImage
    externalLinks{
      url
    }
      duration
      chapters
      volumes
      genres
      synonyms
      averageScore
      airingSchedule(notYetAired: true) {
        nodes {
          airingAt
          timeUntilAiring
          episode
        }
      }
      siteUrl
    }
  }
";


        public static ApiClass ApiRequest(string param)
        {
            if (string.IsNullOrWhiteSpace(param))
            {
                throw new Exception("parameter cannot be null or empty");
            }
            
            HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create("https://graphql.anilist.co");
            var data = GetQueryData(param);
            request.Method = "POST";
            request.ContentType = "application/json"; // place MIME type here
            request.ContentLength = data.Length;

            //var client = new HttpClient();
            

            var resp = request.GetResponse();
            if (resp == null)
            {
                return null;
            }

            var receiveStream = resp.GetResponseStream();
            

            Encoding encode = System.Text.Encoding.GetEncoding("utf-8");

            // create a new stream to a higher level stream reader with the required encoding format. 
             StreamReader readStream = new StreamReader(receiveStream, encode);
             Console.WriteLine("\nResponse stream received");
            Char[] read = new Char[256];

            // Read 256 charcters at a time.    
             int count = readStream.Read(read, 0, 256);

            string str = string.Empty;
            while (count > 0) 
            {
                // Dump the 256 characters on a string and display the string onto the console.
                string tmpStr = new String(read, 0, count);
                // remove all whitespaces
                str += tmpStr.Trim();
                count = readStream.Read(read, 0, 256);
            }

             // Release the resources of stream object.
             readStream.Close();

             // Release the resources of response object.
             resp.Close();

            var apiResponse = JsonSerializer.Deserialize(str, typeof(ApiClass));
            if (apiResponse is ApiClass a)
            {
                return a;
            }
            return null;

            // when working with Newtonsoft.Json
            //return JsonConverter.DeserializeObject<ApiClass>(str);

        }

        private static byte[] GetQueryData(string searchValue)
        {
            var variablesMap = new Hashtable()
            {
                {"search", searchValue},
            };
            var h = new Hashtable()
            {
                {"query", QueryValue},
                {"variables", variablesMap}

            };
            var s = JsonSerializer.Serialize(h, h.GetType());

            return Encoding.Default.GetBytes(s);
        }
    }


    public class ApiClass
    {

    }
}