自动映射器和实体框架代码首先不能正常工作

Question

我想用实体框架代码优先4.1使用Automapper。我无法获得保存/更新以在100％的时间内正常工作。

第一个问题是，如果我不在对象上使用UseDestinationValue()，那么我的DTO将不会将其属性映射到实体。然后，如果我不使用UseDestinationValue()，动态创建的代理对象会丢失一些属性，并且属性Address会在每次更新时获得一个新实体。

Mapper.CreateMap<GymModel, Gym>(); <-- loses Entity Framework proxy properties for update, works fine on insert 

或

Mapper.CreateMap<GymModel, Gym>() 
.ForAllMembers(q => q.UseDestinationValue()); <-- Doesn't map DTO to Entity 

和/或本无法正常工作或

var gym = Mapper.CreateMap<GymModel, Gym>(); 
      gym.ForAllMembers(q => q.UseDestinationValue()); 
      gym.ForMember(q => q.DateCreated, o => o.MapFrom(s => s.DateCreated)); 

服务

public void Save(GymModel model) 
{ 
    var item = new Gym() 
    { 
     Address = new Address() 
    }; 

    if (model.Id > 0) 
    { 
     Expression<Func<Gym, bool>> where = q => q.Id == model.Id; 
     Expression<Func<Gym, object>> address = q => q.Address; 

     item = _gymsRepository.Get(new [] { address }, where); 
    } 

    model.Address.Id = item.AddressId; 

    Mapper.Map(model, item); 

AddressModel

public class AddressModel : IAddressModel 
    { 
     public int Id { get; set; } 
     public string Location { get; set; } 
     public string StreetAddress { get; set; } 
     public string ExtendedAddress { get; set; } 
     public string City { get; set; } 
     public string StateRegion { get; set; } 
     public string PostalCode { get; set; } 
     public string Country { get; set; } 

     public double? Latitude { get; set; } 
     public double? Longitude { get; set; } 
} 

地址

[Table("Address", Schema = "GrassrootsHoops")] 
    public class Address 
    { 
     [Key] 
     public int Id { get; set; } 
     public string Location { get; set; } 
     public string StreetAddress { get; set; } 
     public string ExtendedAddress { get; set; } 
     public string City { get; set; } 
     public string StateRegion { get; set; } 
     public string PostalCode { get; set; } 
     public string Country { get; set; } 

     public double? Latitude { get; set; } 
     public double? Longitude { get; set; } 
    } 

Answer 1

我继续下面这样做，它停在插入再造一个新的地址。如果有人知道一个更好的方式，而不明确告诉地址映射，并忽略父母请张贴它。

 Mapper.Map(model, item); 
     Mapper.Map(model.Address, item.Address); 

Mapper.CreateMap<GymModel, Gym>() 
.ForMember(d => d.Address, o => o.Ignore());