private void Frm_QuanLyDichVu_Load(object sender, EventArgs e)
{
rad_TatCa.Checked = rad_PhongTrong.Checked = rad_PhongDaDat.Checked = rad_PhongCoKhach.Checked = false;
ShowTreeView();
txt_DonGia.ReadOnly = true;
txt_DonGia.BackColor = Color.DarkSeaGreen;
Time_DongHo.Start();
grp_Menu.Enabled = false;
}
private void btn_Thoat_Click(object sender, EventArgs e)
{
Time_DongHo.Stop();
this.Close();
}
