使用自定義工廠使用Automapper創建目標類型

Question

我有CustomerDto和CustomerDomainModel。我希望Automapper在構建CustomerDomainModel對象時使用DataBindingFactorymentioned here。我已經看過ConstructUsing和AfterMap功能Mapper班，但我找不到我想要做的事情。我該怎麼做呢？

Answer 1

你應該可以使用ConstructUsing這個。您可能不得不明確地轉換爲像這樣的正確表達式：

class Program 
    { 
     private static void Main(string[] args) 
     { 
      Mapper.CreateMap<CustomerDto, CustomerDomainModel>() 
        .ForMember(d => d.Id, opt => opt.Ignore()) 
         .ConstructUsing((Func<ResolutionContext, CustomerDomainModel>) (rc => DataBindingFactory.Create<CustomerDomainModel>())); 

      var dto = new CustomerDto {FirstName = "First", LastName = "Last"}; 
      var domain = Mapper.Map<CustomerDto, CustomerDomainModel>(dto); 
      Console.WriteLine("First: " + domain.FirstName); 
      Console.WriteLine("Last: " + domain.LastName); 
      Console.ReadLine(); 
     } 
    } 

    public class CustomerDto 
    { 
     public string FirstName { get; set; } 
     public string LastName { get; set; } 
    } 

    public class CustomerDomainModel 
    { 
     public int Id { get; set; } 
     public string FirstName { get; set; } 
     public string LastName { get; set; } 
    } 

    public static class DataBindingFactory 
    { 
     public static T Create<T>() 
     { 
      return Activator.CreateInstance<T>(); 
     } 
    }