function MoveSelected() {
    $.ajax({
        type: "Get",
        url: '@Url.Action("MoveSelectedRoute", "Transport")',
        data: { orders: completeArray },
        success: function (data) {
            $('#detail_MoveSelectedOrders').html(data);
            $('#modalMoveSelectedOrders').modal('show');
        }
    })
}

public ActionResult MoveSelectedRoute(string[] orders)
{
    string OrdersToMove = string.Empty;
    foreach (string row in orders)
    {
        string orderNo = orders.ToString().PadLeft(10, '0');
        if (OrdersToMove == string.Empty)
        {
            OrdersToMove = orderNo;
        }
        else
            OrdersToMove = OrdersToMove + "," + orderNo;
    }
}