VeloeMinecraftLauncher/VeloeMinecraftLauncher/MinecraftLauncher/Downloader.cs

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

namespace VeloeMinecraftLauncher.MinecraftLauncher
{
    internal static class Downloader
    {
        public static T DownloadAndDeserializeJsonData<T>(string url) where T : new()
        {
            using (var webClient = new HttpClient())
            {
                var jsonData = string.Empty;
                try
                {
                    jsonData = webClient.GetStringAsync(url).Result;
                }
                catch (Exception) { }

                return string.IsNullOrEmpty(jsonData)
                            ? new T()
                            : JsonSerializer.Deserialize<T>(jsonData);
            }
        }

        public static void DownloadFile(string url, string path, string filename)
        {
            using (var webClient = new WebClient())
            {
                if (!Directory.Exists(path))
                    Directory.CreateDirectory(path);
                webClient.DownloadFileAsync(new System.Uri(url), path + "\\" + filename);
            }
        }
    }
}