private void btnThemSanPham_Click(object sender, EventArgs e)
{
frmSanPham SanPham = new frmSanPham();
SanPham.ShowDialog();
ctrlSanPham.HienthiAutoComboBox(cmbSanPham);
}
private void mnuSanPham_Click(object sender, EventArgs e)
{
if (SanPham == null || SanPham.IsDisposed)
{
SanPham = new frmSanPham();
SanPham.MdiParent = this;
SanPham.Show();
}
else
{
SanPham.Activate();
}
}