private void btnHoaDonNhap_Click(object sender, EventArgs e) { Form form = searchOpenedForm("HoaDonNhapManagerForm"); if (form == null) { form = new HoaDonNhapHangManagerForm(); } form.Show(); form.Activate(); }
private void hóaĐơnNhậpToolStripMenuItem_Click(object sender, EventArgs e) { Form form = searchOpenedForm("HoaDonNhapManagerForm"); if (form == null) { form = new HoaDonNhapHangManagerForm(); } form.MdiParent = this; form.Show(); form.Activate(); }