AwbUpdater.Updater.actuallyDownloadAWB C# (CSharp) Method

        private void actuallyDownloadAWB(WebClient client, string source, string target)
        {
            try
            {
                TimeSpan t = DateTime.UtcNow - new DateTime(1970, 1, 1);
                var unixTime = (int) t.TotalSeconds;
                var url = string.Format(
                    "{0}?r={1}&ts={2}",
                    source,
                    HttpUtility.UrlEncode(
                        string.Format("https://sourceforge.net/projects/autowikibrowser/files/autowikibrowser/{0}/", source.Substring(source.LastIndexOf("/") + 1).Replace(".zip", ""))
                        ),
                    unixTime
                    );
                client.DownloadFile(url, target);
            }
            catch (WebException webEx)
            {
                UpdateUI(string.Format("Download of `{0}` failed: {1}", source, webEx.Message), true);
            }
        }