private void ConfirmSearchButtonClick(object sender, EventArgs args) { if (startTime.Text == "" || endTime.Text == "") { MessageBox.Show("Please input a time"); return; } if (choice == 2) { if (startTime.Text == "" || endTime.Text == "") { MessageBox.Show("Please input a time"); return; } result = client.GetRequestFromClient(startTime.Text, endTime.Text); } if (choice == 1) { result = client.GetRequestToVelib(startTime.Text, endTime.Text); } CreateResultPanel(); }