private void buttonSave_Click(object sender, EventArgs e) { if (textBoxInfo.Text != "") { Record newRecord = ControlFunctions.CreateRecord(DateTime.Now, doctor, textBoxInfo.Text, patient.MedCard); string result = ControlFunctions.AddRecord(newRecord); if (result == null) { this.Close(); } else { MessageBox.Show(result); } } else { MessageBox.Show("Заполните поля"); } }