如何使用automapper将另一个类的属性映射到父类

Question

我是Automapper的新手。

我有一个domin和ViewModel类。

我想将域类映射到ViewModel类。

域名类别：

 public class PurchaseOrder
    {
        public int Id { get; set; }
        public string PONo { get; set; }
        public DateTime PODate { get; set; }
        public int CompanyId { get; set; }
    }
    public class Company
    {
        public int Id { get; set; }
        public string Name { get; set; }
    }

查看模型类

 public class PurchaseOrderVM
    {
        public int Id { get; set; }
        public string PONo { get; set; }
        public DateTime PODate { get; set; }
        public int CompanyId { get; set; }
        public string CompanyName { get; set; }

    }
    public class CompanyVM
    {
       public int Id { get; set; }
       public string Name { get; set; }
    }

现在，如果你能看到，我可以完美地映射ID，PONo，PoDate。

但是，我想知道如何将CompanyID和ComapanyName从Domain映射到VM类？

转换方法

static void POTransform()
        {

            PurchaseOrder PODomain = new PurchaseOrder();
            PODomain.Id = 1;
            PODomain.PONo = "154";
            PODomain.PODate = Convert.ToDateTime("5-Jun-2014");
            Mapper.CreateMap<PurchaseOrder, PurchaseOrderVM>()
                .ForMember(dest => dest.CompanyName, Source => Source.MapFrom(????);
        }

Answer 1

Mapper.CreateMap<PurchaseOrder, PurchaseOrderVM>()
            .ForMember(dest => dest.CompanyName, opt => opt.MapFrom(src => GetCompanyById(src.CompanyId).Name));
    }

private Company GetCompanyById(int companyId)
    {
        ....
    }