linq语句优化（各位仔细看一下）

Question

#region linq方式（待优化）
if (RoleTyp == 3)//大农户
{
if (IsClosed == 0)//进行中
{
IList demandList =
(from d in dbContext.T_FARMER_PUBLISHED_DEMAND
join u in dbContext.T_USER
on d.CreateUserId equals u.Id
join s in dbContext.T_SYS_DICTIONARY on d.DemandTypeId equals s.Code
where d.PublishStateId == 0
orderby d.CreateTime descending
select new PublishedDemandRepositoryModel
{
Name = s.DisplayName,
PublishedDate = d.CreateTime,
Status = d.PublishStateId,
Address = d.Province + "" + d.City + "" + d.Region + "" + d.Township + "" + d.Village,
DetailAddress = d.DetailedAddress,
RequirementType = s.DisplayName,
PhoneNumber = u.PhoneNumber,
Remark = d.Brief
}).Skip((PageIndex - 1) * PageSize).Take(PageSize).ToList();
return demandList;
}
else//已关闭
{
IList demandList = (from d in dbContext.T_FARMER_PUBLISHED_DEMAND
join u in dbContext.T_USER
on d.CreateUserId equals u.Id
join s in dbContext.T_SYS_DICTIONARY on d.DemandTypeId equals s.Code
where d.PublishStateId != 0
orderby d.CreateTime descending
select new PublishedDemandRepositoryModel
{
Name = s.DisplayName,
PublishedDate = d.CreateTime,
Status = d.PublishStateId,
Address = d.Province + "" + d.City + "" + d.Region + "" + d.Township + "" + d.Village,
DetailAddress = d.DetailedAddress,
RequirementType = s.DisplayName,
PhoneNumber = u.PhoneNumber,
Remark = d.Brief
}).Skip((PageIndex - 1) * PageSize).Take(PageSize).ToList();
return demandList;
}

            }
            else if (RoleTyp == 5) //产业商
            {
                if (IsClosed == 0)//进行中
                {
                    IList<PublishedDemandRepositoryModel> demandList =
                        (from d in dbContext.T_BUSINESS_PUBLISHED_DEMAND
                         join u in dbContext.T_USER
                             on d.CreateUserId equals u.Id
                         join s in dbContext.T_SYS_DICTIONARY on d.DemandTypeId equals s.Code
                         where d.PublishStateId == 0
                         orderby d.CreateTime descending
                         select new PublishedDemandRepositoryModel
                         {
                             Name = s.DisplayName,
                             PublishedDate = d.CreateTime,
                             Status = d.PublishStateId,
                             Address = d.Province + "" + d.City + "" + d.Region + "" + d.Township + "" + d.Village,
                             DetailAddress = d.DetailedAddress,
                             RequirementType = s.DisplayName,
                             PhoneNumber = u.PhoneNumber,
                             Remark = d.Brief
                         }).Skip((PageIndex - 1) * PageSize).Take(PageSize).ToList();
                    return demandList;
                }
                else//已关闭
                {
                    IList<PublishedDemandRepositoryModel> demandList = (from d in dbContext.T_BUSINESS_PUBLISHED_DEMAND
                                                                        join u in dbContext.T_USER
                                                                        on d.CreateUserId equals u.Id
                                                                        join s in dbContext.T_SYS_DICTIONARY on d.DemandTypeId equals s.Code
                                                                        where d.PublishStateId !=0
                                                                        orderby d.CreateTime descending
                                                                        select new PublishedDemandRepositoryModel
                                                                        {
                                                                            Name = s.DisplayName,
                                                                            PublishedDate = d.CreateTime,
                                                                            Status = d.PublishStateId,
                                                                            Address = d.Province + "" + d.City + "" + d.Region + "" + d.Township + "" + d.Village,
                                                                            DetailAddress = d.DetailedAddress,
                                                                            RequirementType = s.DisplayName,
                                                                            PhoneNumber = u.PhoneNumber,
                                                                            Remark = d.Brief
                                                                        }).Skip((PageIndex - 1) * PageSize).Take(PageSize).ToList();
                    return demandList;
                }

            }
            else
            {
                return null;
            }
            #endregion

Answer 1

别人写的代码，仔细看几遍也看不懂~~~~不熟悉你的业务，何况这么多代码，看都看晕了啊！