void btnUpdate_Click(object sender, EventArgs e) { EditText txtId = FindViewById <EditText>(Resource.Id.txtTaskId); EditText txtTask = FindViewById <EditText>(Resource.Id.txtTask); DBRepository dbr = new DBRepository(); string result = dbr.updateRecord(int.Parse(txtId.Text), txtTask.Text); Toast.MakeText(this, result, ToastLength.Short).Show(); }