public void InitializationDataBox()
        {
            FirmDAO daoFirm = new FirmDAO();
            cbFirm.Items.AddRange(daoFirm.getComboBox().ToArray());
            cbDepartment.Enabled = false;

        }
        private void btnSave_Click(object sender, EventArgs e)
        {
            generateBookMark();
            Department department = null;
            if (isValid())
            {
                if (!addDept)
                {
                    department = (Department)((BindingSource)gridDepartment.DataSource).Current;
                }
                else
                {
                    department = new Department();
                }
                department.nameDepartment = tbNameDept.Text;
                FirmDAO daoFirm = new FirmDAO();
                department.firmDepartment = daoFirm.getById(Convert.ToInt32(((KeyValuePair)cbFirm.SelectedItem).Key));
                if (cbDepartment.SelectedIndex >= 0) department.parentDepartment = dao.getById(Convert.ToInt32(((KeyValuePair)cbDepartment.SelectedItem).Key));

                if (department.idDepartment != 0)
                {
                    dao.update(department);
                }
                else
                {
                    department = dao.insert(department);
                }
                initializationData();
            }
        }