private void btnHangHoa_Click(object sender, EventArgs e) { Form form = searchOpenedForm("HangHoaManagerForm"); if (form == null) { form = new HangHoaManagerForm(); } form.Show(); form.Activate(); }
private void hàngHóaToolStripMenuItem_Click(object sender, EventArgs e) { Form form = searchOpenedForm("HangHoaManagerForm"); if (form == null) { form = new HangHoaManagerForm(); } form.MdiParent = this; form.Show(); form.Activate(); }