private void Do_DataDownloader() { UIAlertView alertView = null; DataDownloader dataDownloader = new DataDownloader(url); dataDownloader.SyncDownload(); if (dataDownloader.Exception == null) { alertView = new UIAlertView("Success", dataDownloader.Text, null, "Ok", null); } else { alertView = new UIAlertView("Error", dataDownloader.Exception.Message, null, "Ok", null); } alertView.Show(); }