Automapper如何從嵌套模型工作到平面模型？

Question

我有一個類似的嵌套的視圖模型：

public class EmployeeViewModel 
{  
    //... 

    public string EmployeeFirstName { get; set; } 

    public string EmployeeLastName { get; set; } 

    public AddressViewModel{ get; set; } 
} 

的AddressViewModel看起來是這樣的：

public class AddressViewModel 
{ 
    public string Street {get; set;} 
    public string City {get; set;} 
    public string State {get; set;} 
    public string Zip {get; set;} 
} 

然後，有一個員工的域對象，像這樣：

public class Employee 
{ 
    public string EmployeeFirstName { get; set; } 

    public string EmployeeLastName { get; set; } 

    public string Street { get; set; } 

    public string City { get; set; } 

    public string State { get; set; } 

    public string Zip { get; set; } 
} 

我試圖將EmployeeViewModel映射到Employee域對象。這是我想出了和它的作品，但我想知道是否有這樣做的更簡單的方法：

Mapper.CreateMap<EmployeeViewModel, Employee>().ForMember(destination => destination.Street, opt => opt.MapFrom(src => src.AddressViewModel.Street)) 
      .ForMember(destination => destination.City, opt => opt.MapFrom(src => src.AddressViewModel.City)) 
      .ForMember(destination => destination.State, opt => opt.MapFrom(src => src.AddressViewModel.State)) 
      .ForMember(destination => destination.Zip, opt => opt.MapFrom(src => src.AddressViewModel.Zip)); 

正如你可以看到，在職工域對象的屬性名稱和AddressViewModel是相同。所以，似乎應該有一個更簡單的方法來做到這一點。

感謝

Answer 1

您可以簽出文檔中的flattening sample。這裏有一個例子：

public class AddressViewModel 
{ 
    public string Street { get; set; } 
} 

public class EmployeeViewModel 
{  
    public string EmployeeFirstName { get; set; } 
    public AddressViewModel Address { get; set; } 
} 

public class Employee 
{ 
    public string EmployeeFirstName { get; set; } 
    public string AddressStreet { get; set; } 
} 


class Program 
{ 
    static void Main() 
    { 
     Mapper.CreateMap<EmployeeViewModel, Employee>(); 
     var result = Mapper.Map<EmployeeViewModel, Employee>(new EmployeeViewModel 
     { 
      EmployeeFirstName = "first name", 
      Address = new AddressViewModel 
      { 
       Street = "some street" 
      } 
     }); 
     Console.WriteLine(result.EmployeeFirstName); 
     Console.WriteLine(result.AddressStreet); 
    } 
} 

注意如何爲壓扁開箱目標屬性被稱爲AddressStreet的。