OrderSystem/OrderSystem.Services/OrderService.cs

using OrderSystem.Entity;
using OrderSystem.Entity.ViewModel;
using System;
using System.Collections.Generic;
using System.Text;
using System.Linq;

namespace OrderSystem.Services
{
    public class OrderService : IOrderService
    {
        private OrderSystemContext DbContext { get; set; }

        public OrderService(OrderSystemContext dbContext)
        {
            DbContext = dbContext;
        }
        public List<ContractModel> GetContractList(string mobile) 
        {
            var contractList = (from c in DbContext.VxContractInfo.Where(e => e.客户号码 == mobile)
                                select new ContractModel
                                {
                                    ContractNo = c.合同号,
                                    Count = c.图纸数,
                                    Mobile = c.客户号码,
                                    CustomerName = c.客户名称,
                                    Status = c.订单状态
                                }).ToList();

            var orderList = (from o in DbContext.VxOrderInfo.Where(e => e.客户号码 == mobile)
                             select new OrderModel
                             {
                                 ContractNo = o.合同号,
                                 CustomerName = o.客户名称,
                                 OrderNo = o.订单号,
                                 ProductName = o.产品,
                                 Status = o.订单状态
                             }).ToList();

            contractList.ForEach(e => e.OrderList = orderList.Where(o => o.ContractNo == e.ContractNo).ToList());

            return contractList;
        }
    }
}