Download file in C# . NET

        private bool download(string url, string file) {
            try
            {
                System.Net.WebClient client = new WebClient();
                client.DownloadFile(url, file);
                return true;
            }
            catch (Exception exc)
            {
                richTextBox1.AppendText("\n" + exc.ToString());
                return false;
            }
       
        }