//Mở frmTextKhachHang qua Lối Tắt từ Form Đặt Phòng
public frmTextKhachHang(frmDatPhong fdph, string title)
{
InitializeComponent();
isShortCutCreate = true;
this.Text = "Thêm Khách Hàng";
Lb_TitleName = title;
KieuForm = 1;
this.Size = new Size(664, 389);
frmDPh = fdph;
}
private void open_frmDatPhong()
{
this.pnl_SubForm.Controls.Clear();
frmDatPhong fdp = new frmDatPhong(Id_nhanvien);
fdp.FormBorderStyle = FormBorderStyle.None;
fdp.TopLevel = false;
fdp.Dock = DockStyle.Fill;
fdp.ShowInTaskbar = false;
fdp.Show();
this.pnl_SubForm.Controls.Add(fdp);
}