private void btn_tieptuc_Click(object sender, EventArgs e)
{
selectedTPvalue = (string)cbo_thanhpho.SelectedValue;
selectedQvalue = (string)cbo_quan.SelectedValue;
string vitri = selectedQvalue + ',' + selectedTPvalue;
DangNhap.Thongtindangnhap.MaCHtheoVitri = TimCN(vitri, dsdiachi);
Form datmon = new DatHang();
datmon.Show();
}
private void btn_datmon_Click(object sender, EventArgs e)
{
Form dathang = new DatHang();
dathang.Show();
}