Как скачивать несколько файлов через WebClient по очереди, через DownloadFileAsync

void DownloadMPQ(Uri u, string s)
        {
            WebClient web = new WebClient();
            web.DownloadProgressChanged += new DownloadProgressChangedEventHandler(Download);
            web.DownloadFileCompleted += new AsyncCompletedEventHandler(DownComp);
            web.DownloadFileAsync(u, s);
        }
        void DownComp(object sender, AsyncCompletedEventArgs e)
        {
            NotificShow(String.Format("'{0}' скачан.", ThisFile));
        }
        void Download(object sender, DownloadProgressChangedEventArgs e)
        {
            long q = e.TotalBytesToReceive / 1024;
            prgDownload.Properties.Maximum = (int)q;
            prgDownload.EditValue = e.BytesReceived / 1024;
        }

DownloadMPQ(new Uri("http://localhost/mp.mpq"), "mp.mpq");

        public async Task DownloadManyFiles(Dictionary<Uri, string> files)
        {
            WebClient wc = new WebClient();
            wc.DownloadProgressChanged += (s, e) => progressBar1.Value = e.ProgressPercentage;
            foreach (KeyValuePair<Uri, string> pair in files) { await wc.DownloadFileTaskAsync(pair.Key,pair.Value);}
            wc.Dispose();
        }
 
        private void button1_Click(object sender, EventArgs e)
        {
            Dictionary<Uri, string> dict = new Dictionary<Uri, string>();
            dict.Add(new Uri("https://download.microsoft.com/download/4/E/3/4E38FD5A-8859-446F-8C58-9FC70FE82BB1/Express%2032BIT%20WoW64/SQLEXPR32_x86_RUS.exe"), "Firstfile.exe");
            dict.Add(new Uri("https://download.microsoft.com/download/4/E/3/4E38FD5A-8859-446F-8C58-9FC70FE82BB1/Express%2032BIT/SQLEXPR_x86_RUS.exe"), "Secondfile.exe");
            DownloadManyFiles(dict);
        }

public void UpdateProgram()
        {
            int countFile = GetFileList();
            
            for (int i = 0; i < countFile; i++)
            {
                try
                {
                    //WebClient client = new WebClient();
                    //client.DownloadProgressChanged += Client_DownloadProgressChanged;
                    //client.DownloadFileCompleted += Client_DownloadFileCompleted;
                    //client.DownloadFileAsync(new Uri(@"" + upHost + @"\Update" + list_files[i]), list_files[i]+"_new");
 
                    Dictionary<Uri, string> dict = new Dictionary<Uri, string>();
                    dict.Add(new Uri("https://download.microsoft.com/download/4/E/3/4E38FD5A-8859-446F-8C58-9FC70FE82BB1/Express%2032BIT%20WoW64/SQLEXPR32_x86_RUS.exe"), "Firstfile.exe");
                    dict.Add(new Uri("https://download.microsoft.com/download/4/E/3/4E38FD5A-8859-446F-8C58-9FC70FE82BB1/Express%2032BIT/SQLEXPR_x86_RUS.exe"), "Secondfile.exe");
                    DownloadManyFiles(dict);
 
                    
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.ToString());
                }
            }
        }
        public async Task DownloadManyFiles(Dictionary<Uri, string> files)
        {
            WebClient wc = new WebClient();
            wc.DownloadProgressChanged += (s, e) => prbUpdate.Value = e.ProgressPercentage;
            foreach (KeyValuePair<Uri, string> pair in files) { await wc.DownloadFileTaskAsync(pair.Key, pair.Value); }
            wc.Dispose();
        }
 
        private void Client_DownloadProgressChanged(object sender, DownloadProgressChangedEventArgs e)
        {
            prbUpdate.Maximum = (int)e.TotalBytesToReceive / 100;
            prbUpdate.Value = (int)e.BytesReceived / 100;
        }
 
        private void Client_DownloadFileCompleted(object sender, System.ComponentModel.AsyncCompletedEventArgs e)
        {
            //MessageBox.Show("Готово");
            btnUpdateOK.Enabled = true;
            lblUpdate.Text = "Загрузка завершена";
            lblUpdate1.Text = "Нажмите ОК для применения изменений";
            lblUpdate.ForeColor = Color.Red;
            lblUpdate1.ForeColor = Color.Red;
        }
 
        private void Form1_Shown(object sender, EventArgs e)
        {
            UpdateProgram();
        }

        public void UpdateProgram()
        {
           //int countFile = GetFileList();
            Dictionary<Uri, string> dict = new Dictionary<Uri, string>();
            dict.Add(new Uri("https://download.microsoft.com/download/4/E/3/4E38FD5A-8859-446F-8C58-9FC70FE82BB1/Express%2032BIT%20WoW64/SQLEXPR32_x86_RUS.exe"), "Firstfile.exe");
            dict.Add(new Uri("https://download.microsoft.com/download/4/E/3/4E38FD5A-8859-446F-8C58-9FC70FE82BB1/Express%2032BIT/SQLEXPR_x86_RUS.exe"), "Secondfile.exe");
            DownloadManyFiles(dict);
        }
        public async Task DownloadManyFiles(Dictionary<Uri, string> files)
        {
            WebClient wc = new WebClient();
            wc.DownloadProgressChanged += (s, e) => prbUpdate.Value = e.ProgressPercentage;
            foreach (KeyValuePair<Uri, string> pair in files) { await wc.DownloadFileTaskAsync(pair.Key, pair.Value); }
            wc.Dispose();
        }

using System.Threading.Tasks;

WebClient client = new WebClient();
client.DownloadProgressChanged += Client_DownloadProgressChanged;
client.DownloadFileCompleted += Client_DownloadFileCompleted;
client.DownloadFileAsync(new Uri(@"" + upHost + @"\Update" + list_files[i]), list_files[i]+"_new");

await wc.DownloadFileTaskAsync(pair.Key, pair.Value);

static class WVExtesions
{
    public static Task WaitForLoadingComplete(this WebClient client, Uri Uri, string filename)
    {
        var tcs = new TaskCompletionSource<bool>();
        AsyncCompletedEventHandler handler = ((sender, e) => tcs.TrySetResult(true));
        client.DownloadFileCompleted += handler;
        client.DownloadFileAsync(Uri, filename);
        tcs.Task.ContinueWith(_ =>
        {
            client.DownloadFileCompleted -= handler;
        }, TaskContinuationOptions.ExecuteSynchronously);
        return tcs.Task;
    }
}

await wc.DownloadFileTaskAsync(pair.Key, pair.Value);

public async Task DownloadManyFiles(Dictionary<Uri, string> files)
{
  WebClient wc = new WebClient();
  wc.DownloadProgressChanged += (s, e) => prbUpdate.Value = e.ProgressPercentage;
  foreach (KeyValuePair<Uri, string> pair in files)
  {
    //await wc.DownloadFileTaskAsync(pair.Key, pair.Value);
    WaitForLoadingComplete(...,...,...);
  }
  wc.Dispose();
}

await wc.WaitForLoadingComplete(pair.Key, pair.Value);

await wc.WaitForLoadingComplete(pair.Key, pair.Value);