protected void Page_Load(object sender, EventArgs e)
    {
        if (Session["Admin"] == null)
        {
            Response.Redirect("frmAdminLogin.aspx");
        }
        if (!IsPostBack)
        {
            ClsAdminBookings VehicleObj = new ClsAdminBookings();
            DataSet          ds         = VehicleObj.DiplayVehicleaId("select VehicleId from tblVehicle");
            DdlVehicleId.Items.Clear();
            DdlVehicleId.Items.Insert(0, "Select");

            for (int i = 0; i <= ds.Tables[0].Rows.Count - 1; i++)
            {
                DdlVehicleId.Items.Add(ds.Tables[0].Rows[i][0].ToString());
            }
        }
    }