Question

 var config = new MapperConfiguration(cfg => {
    cfg.CreateMap<EmployeeSkill, EmployeeSkillDTO>(); 
 });

IMapper mapper = config.CreateMapper();

List<EmployeeSkill> ski = context.EmployeeSkill.Where(r => !r.IsDeleted && r.EmployeeID == employeeID).ToList();
List<EmployeeSkillDTO> mapObj = mapper.Map<List<EmployeeSkill>, List<EmployeeSkillDTO>>(ski);

return mapObj;

它返回

[
   {
    "SkillID": 1,
    "EmployeeID": 83,
    "YearOfExperience": 8,
    "Major": "major",
    "SkillName": null,
    "IsDeleted": false,
    "CreatedBY": 29,
    "CreationTime": "2018-05-14T15:53:06.203",
    "UpdatedBy": null,
    "UpdateTime": null
},

我需要从Skills表中返回SkillName ...我试过：

var config = new MapperConfiguration(cfg => {
    cfg.CreateMap<EmployeeSkill, EmployeeSkillDTO>().ForMember(x => x.SkillName, opt => opt.ResolveUsing(src => src.Skill.SkillName)) 
 });

但它不起作用..任何建议

Answer 1

你需要做两件事之一

停止在查询结果中使用.ToList()，并在配置中使用ProjectTo()加opt.Map代替'opt.ResolveUsing`。（优选的）。
检索EmployeeSkill并包含SkillName表时调用Include。（这将获得您不需要的额外数据。）

方法＃1：

var ski = context.EmployeeSkill.Where(r => !r.IsDeleted && r.EmployeeID == employeeID);
var mapObj = ski.ProjectTo<EmployeeSkillDTO>();

方法＃1配置

cfg.CreateMap<EmployeeSkill, EmployeeSkillDTO>()
   .ForMember(x => x.SkillName, opt => opt.MapFrom(src => src.Skill.SkillName));

方法＃2：

var ski = context.EmployeeSkill.Include(x => x.Skill)
    .Where(r => !r.IsDeleted && r.EmployeeID == employeeID).ToList();

Auto Mapper C＃..将数据添加到mapper

1 个答案: