private void button_Add_Click(object sender, EventArgs e) { Students students = new Students(); People student = new People(); student.name = textBox_Name.Text; student.surname = textBox_Surname.Text; student.patronumic = textBox_Patronumic.Text; student.login = textBox_Login.Text; student.birthday = dateTimePicker_Birthday.Value; student.information = richTextBox_Information.Text; student.phonenumber = textBox_PhoneNumber.Text; try { grups.OpenConnection(connectionString); students.OpenConnection(connectionString); students.InsertStudent(student, grups.GetIdByName(comboBox_Grups.Text)); students.CloseConnection(); grups.CloseConnection(); } catch (Exception ex) { MessageBox.Show(ex.Message); return; } MessageBox.Show("Студент был успешно добавлен!\nПароль для первого входа - 12345"); this.Close(); }