private void btEditCustomer_Click_1(object sender, EventArgs e)
        {
            ctmBUS = new CustomerBUS();
            CustomerDTO ctm = new CustomerDTO();

            ctm.IDC   = txtNameCustomer.Text;
            ctm.NAME  = txtNameCustomer.Text;
            ctm.PHONE = txtPhoneCustomer.Text;
            ctm.DATE  = DateTime.Parse(dtBirthday.Text);
            ctm.CMND  = txtIdentifyCardCustomer.Text;
            bool kq = ctmBUS.edit(ctm);

            if (kq == false)
            {
                MessageBox.Show("Fail!");
            }
            else
            {
                MessageBox.Show("Sussces");
            }
            this.loadData();
        }