private void button3_Click(object sender, EventArgs e) { if ((ManagerName.Text != "") && (ManagerYear.Text != "") && (ManagerSalary.Text != "") && (ManagerDayOfHolidays.Text != "") && (ManagerDepartment.Text != "") && (ManagerExperience.Text != "")) { Manager obj = new Manager(ManagerName.Text, int.Parse(ManagerYear.Text), int.Parse(ManagerSalary.Text), int.Parse(ManagerDayOfHolidays.Text), ManagerDepartment.Text, int.Parse(ManagerExperience.Text)); Owner owner = new Owner(OwnerName.Text, int.Parse(OwnerYear.Text), int.Parse(OwnerBudget.Text), obj); OwnerName.Clear(); OwnerYear.Clear(); OwnerBudget.Clear(); ManagerName.Clear(); ManagerYear.Clear(); ManagerSalary.Clear(); ManagerDayOfHolidays.Clear(); ManagerExperience.Clear(); ManagerDepartment.Clear(); OwnerList.Add(owner); Ownerdata.DataSource = null; Ownerdata.DataSource = OwnerList; } else { MessageBox.Show("Заполните поля manager "); } }