private void navBar_danhsachphong_LinkClicked(object sender, DevExpress.XtraNavBar.NavBarLinkEventArgs e)
{
hienthi.TabPages.Clear();
frm_danhsachphong frm = new frm_danhsachphong();
AddTabControl(frm, "Danh sách phòng");
}
public frm_tt(frm_danhsachphong _frm_danhsachphong, connect _conn)
{
InitializeComponent();
dsphong = _frm_danhsachphong;
conn = _conn;
}
