private void btnKhuon_Click(object sender, EventArgs e)
{
KhuonMau.maSP = txtMa_SP.Text;
KhuonMau VTKhuon = new KhuonMau();
VTKhuon.ShowDialog();
}
private void btnKhokhuon_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
{
KhuonMau khuonMau = new KhuonMau();
khuonMau.ShowDialog();
}