private void tsbtnNhomHangHoa_Click(object sender, EventArgs e) { if (!IsShow("frmNhomHangHoa")) { frmNhomHangHoa nhomhanghoa = new frmNhomHangHoa(); nhomhanghoa.StartPosition = FormStartPosition.CenterScreen; nhomhanghoa.MdiParent = this; nhomhanghoa.Show(); } else { foreach (Form frmNhomHangHoa in this.MdiChildren) { if (frmNhomHangHoa.Name == "frmNhomHangHoa") { frmNhomHangHoa.Activate(); break; } } } }
private void mnuQuanLyHangHoa_Click(object sender, EventArgs e) { frmNhomHangHoa nhomhanghoa = new frmNhomHangHoa(); nhomhanghoa.ShowDialog(); }