C# webclient progresschanged downlodfileCompleted

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Diagnostics;
using System.Net;
using System.IO;
using System.Windows.Forms;namespace ConsoleApp392
{
    class Program
    {
        static void Main(string[] args)
        {
            WebClientDownloadDemo();
        }        static void WebClientDownloadDemo()
        {
            string url = "https://go.microsoft.com/fwlink/?linkid=866662";
            WebClient webClient = new WebClient();
            webClient.DownloadProgressChanged += WebClient_DownloadProgressChanged;
            webClient.DownloadFileCompleted += WebClient_DownloadFileCompleted;
            Console.WriteLine($"Started at {DateTime.Now.ToString("yyyyMMddHHmmssffff")}");
            webClient.DownloadFileAsync(new Uri(url), "SSMS2019.exe");
        }        private static void WebClient_DownloadFileCompleted(object sender, System.ComponentModel.AsyncCompletedEventArgs e)
        {
            MessageBox.Show("Download Completed!");
        }        private static void WebClient_DownloadProgressChanged(object sender, DownloadProgressChangedEventArgs e)
        {
            Debug.WriteLine($"{e.UserState?.ToString()}    downloaded {e.BytesReceived} of {e.TotalBytesToReceive} bytes. {e.ProgressPercentage} % complete...");
            Console.WriteLine($"{e.UserState?.ToString()}    downloaded {e.BytesReceived} of {e.TotalBytesToReceive} bytes. {e.ProgressPercentage} % complete...");
        }
}
}