private void ConfirmDeleteAll(object sender, EventArgs e) { AlertDialog.Builder alert = new AlertDialog.Builder(this); alert.SetTitle("Confirm Delete"); alert.SetMessage("Delete all words?"); alert.SetPositiveButton("Delete", (senderAlert, args) => { WordsFileHandler.writeWords(""); }); alert.SetNegativeButton("Cancel", (senderAlert, args) => { return; }); Dialog dialog = alert.Create(); dialog.Show(); }