AvalonGUIConfig.updateCheck.Download C# (CSharp) Метод

        public static void Download()
        {
            using (WebClient wcDownload = new WebClient())
            {
                try
                {
                    webRequest = (HttpWebRequest)WebRequest.Create(optionDownloadURL);
                    webRequest.Credentials = CredentialCache.DefaultCredentials;
                    webResponse = (HttpWebResponse)webRequest.GetResponse();
                    Int64 fileSize = webResponse.ContentLength;
                    strResponse = wcDownload.OpenRead(optionDownloadURL);
                    strLocal = new FileStream(optionDownloadPath, FileMode.Create, FileAccess.Write, FileShare.None);
                    int bytesSize = 0;
                    byte[] downBuffer = new byte[2048];
                    downloadForm.Refresh();
                    while ((bytesSize = strResponse.Read(downBuffer, 0, downBuffer.Length)) > 0)
                    {
                        strLocal.Write(downBuffer, 0, bytesSize);
                        PercentProgress = Convert.ToInt32((strLocal.Length * 100) / fileSize);
                        pBar.Value = PercentProgress;
                        pLabel.Text = "Downloaded " + strLocal.Length + " out of " + fileSize + " (" + PercentProgress + "%)";
                        downloadForm.Refresh();
                    }
                }
                catch { }
                finally
                {
                    webResponse.Close();
                    strResponse.Close();
                    strLocal.Close();
                    extractAndCleanup();
                    downloadForm.Hide();
                }
            }
        }