private void btnNhaPhanPhoi_LinkClicked(object sender, DevExpress.XtraNavBar.NavBarLinkEventArgs e)
        {
            fThemKhachHang fThemKH = new fThemKhachHang();

            fThemKH.Show();
        }
        //void loadTable()
        //{

        //    string query = "exec sp_LoadStudentById @masv , @tensv";

        //    DataProvider provider = new DataProvider();

        //    dgvProduct.DataSource = provider.ExecuteQuery(query, new object[]{"sv001","anh vũ"});

        //}

        private void simpleButton3_Click(object sender, EventArgs e)
        {
            fThemKhachHang fThemKH = new fThemKhachHang();

            fThemKH.Show();
        }