private void barButtonItem4_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e) { KhachHangGUI f = new KhachHangGUI(); f.MdiParent = this; f.Show(); }
private void btnKhachHang_ItemClick(object sender, ItemClickEventArgs e) { KhachHangGUI khachHangGUI = new KhachHangGUI(); AddTabControl(khachHangGUI, "Khách hàng"); }