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