大神可不可以解答下面的代码是什么意思 就这么一段 剩下的猜吧

大神能否解答下面的代码是什么意思 就这么一段 剩下的猜吧
大概的意思就行 我面试的时候给了这个代码  问问大概是什么意思 我搞砸了 因为只会java c#就上学学过  很惭愧  但是因为这个睡不着 求大神解答
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Newtonsoft.Json;
using Tickets.TrafficSystem.Common;
using Tickets.TrafficSystem.Configuration;
using Tickets.TrafficSystem.kyfw12306Service.Contract;
using Tickets.TrafficSystem.kyfw12306Service.Contract.Model;
using Tickets.TrafficSystem.PlatformService.Contract;
using Tickets.TrafficSystem.PlatformService.Contract.Model;

namespace Tickets.TrafficSystem.TaskService.Main
{
    public class OrderTicketsTask : ITask
    {
        static ITicketsOrderService _ticketsOrderService = ServiceBroker.GetInstance<ITicketsOrderService>();
        static ITicketsQueryService _ticketsQueryService = ServiceBroker.GetInstance<ITicketsQueryService>();
        static IOrderService _orderService = ServiceBroker.GetInstance<IOrderService>();
        static IAccountService _accountService = ServiceBroker.GetInstance<IAccountService>();

        public TaskInfo TaskInfo;

        public void handler()
        {
            try
            {
                string errorCode = "登陆失败";
                if (_ticketsOrderService.Login(TaskInfo.BookInfo, ref errorCode))
                {

                    if (!_ticketsOrderService.HasValidPassenger(TaskInfo.BookInfo))
                    {
                        _accountService.UpdateAccountStatus(TaskInfo.BookInfo.ID, -1);
                        TaskScheduled._bookInfos[TaskScheduled._bookInfos.IndexOf(TaskInfo.BookInfo)].BookStatus = -1;
                        _orderService.UpdateOrderStatus(TaskInfo.OrderInfo.ID, (int)OrderStatus.Normal);
                        return;
                    }

 errorCode = "无车票信息";
                    var ticketsInfo = _ticketsQueryService.SearchTicketNew(TaskInfo.OrderInfo.Date, BaseData.Instance.CityCodeDic[TaskInfo.OrderInfo.Go], 

BaseData.Instance.CityCodeDic[TaskInfo.OrderInfo.To], TaskInfo.BookInfo._cc);

                    if (ticketsInfo.Count > 0)
                    {

                        var trainNos = TaskInfo.OrderInfo.TrainNo.Split('/');
                        foreach (var trainNo in trainNos)
                        {
                            if (string.IsNullOrEmpty(trainNo))
                                continue;

                            foreach (var ticket in ticketsInfo)
                            {
                                var infos = JsonConvert.DeserializeObject<Dictionary<string, object>>(ticket.ToString());