private void btn_ThemKhachHang_Click(object sender, EventArgs e) { Frm_KhachHang frmKH = new Frm_KhachHang(); frmKH.MdiParent = FormMain.ActiveForm; frmKH.Show(); }
private void btn_KhachHang_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e) { Form frm = this.ExistForm(typeof(P_Layer.Frm_KhachHang)); if (frm != null) { frm.Activate(); } else { P_Layer.Frm_KhachHang KhachHang = new P_Layer.Frm_KhachHang(); KhachHang.MdiParent = this; KhachHang.Show(); } }