将扁平字符串映射到list

Question

关于AutoMapper的新问题

员工模型对象。

public class Employee {
    public string FirstName { get; set; }
    public string LastName { get; set; }
    public decimal HourlyRate { get; set; }
    public List<string> EmailAddresses { get; set; }
}

Dto对象:

public class UpdateEmployeeDetailsDto {
    public decimal HourlyRate { get; set; }
    public string EmailAddress1 { get; set; }
    public string EmailAddress2 { get; set; }
}

我想将DTO映射到Employee对象，并将EmailAddress1和EmailAddress2转换为List。

我在谷歌和SO上搜索过这种类型的东西，但我发现的例子我一直无法将它们转化为工作代码。

帮忙吗?

Answer 1

使用AfterMap来提供自定义映射(在您的例子中是从属性创建列表):

Mapper.CreateMap<UpdateEmployeeDetailsDto, Employee>()
      .AfterMap((dto, e) => e.EmailAddresses = new List<string>() {
          dto.EmailAddress1,
          dto.EmailAddress2
      });

Answer 2

除了@lazyberezovsky所说的，您还可以创建一个自定义解析器:

 public class CustomResolver : ValueResolver<UpdateEmployeeDetailsDto, List<string>>
  {
    protected override List<string> ResolveCore(UpdateEmployeeDetailsDto source)
    {
        return new List<string> { source.EmailAddress1, source.EmailAddress2 }
    }
  }
Mapper.CreateMap<UpdateEmployeeDetailsDto, Employee>()
  .ForMember(dest => dest.EmailAddresses, opt => opt.ResolveUsing<CustomResolver>());

有什么意义?你可以让它更通用，用它来解决Value1, Value2, Value3…ValueN被映射到List<ValueType> Values