private void Window_KeyDown(object sender, KeyEventArgs e) { if (spNoiDung.Children[0] is UserControlLibrary.UCKho) { ucKho.Window_KeyDown(sender, e); } if (spNoiDung.Children[0] is UserControlLibrary.UCNhaCungCap) { ucNhaCungCap.Window_KeyDown(sender, e); } if (spNoiDung.Children[0] is UserControlLibrary.UCNhapKho) { ucNhapKho.Window_KeyDown(sender, e); } if (spNoiDung.Children[0] is UserControlLibrary.UCXuLyKho) { ucXuLyKho.Window_KeyDown(sender, e); } if (spNoiDung.Children[0] is UserControlLibrary.UCChuyenKho) { ucChuyenKho.Window_KeyDown(sender, e); } }