private void buttonAddJob_Click(object sender, EventArgs e) { if (textBoxName.Text == "" || textBoxName.Text == "Все болезни") { MessageBox.Show("Введите название болезни"); } else { string illnessName = textBoxName.Text; string illnessInfo = textBoxInfo.Text; string result; Illness newIllness; newIllness = ControlFunctions.CreateIllness(illnessInfo, illnessName); result = ControlFunctions.AddIllness(newIllness); if (result != null) { MessageBox.Show(result, "Ошибка"); } ReloadForm(true); } }