private void frmGiamSatXe_BaoHoatDong_Load(object sender, EventArgs e)
        {
            dulieu = lienlac.GSX_BaoHoatDong_GetXe();

            txtSoHieu.Properties.DataSource    = dulieu;
            txtSoHieu.Properties.DisplayMember = "SoHieuXe";
            txtSoHieu.Properties.ValueMember   = "MaLaiXe";

            lVungDieuHanh.Properties.DataSource    = new VungDieuHanh().GetTenVungDieuHanh();
            lVungDieuHanh.Properties.DisplayMember = "TenVung";
            lVungDieuHanh.Properties.ValueMember   = "Id";

            deGioDi.DateTime = GiamSatXe_LienLac.Inst.GetTimeServer();

            txtSoHieu.Focus();
        }