private void panel2_Click(object sender, EventArgs e)
{
this.Hide();
BanHang frm = new BanHang();
frm.ShowDialog();
//WHEN SHOWDIALOG() END
frm.Dispose();
this.Show();
}
private void btnBanHang_Click(object sender, EventArgs e)
{
BanHang bh = new BanHang();
bh.Show();
}
