private void productToolStripMenuItem1_Click(object sender, EventArgs e)
{
if (brand.IsDisposed)
{
brand = new frmBrand();
}
product.BringToFront();
product.Show();
product.MdiParent = this;
}
private void brandToolStripMenuItem_Click(object sender, EventArgs e)
{
if (brand.IsDisposed)
{
brand = new frmBrand();
}
brand.BringToFront();
brand.Show();
brand.MdiParent = this;
}