c# - 通过 id 获取项目并使用自动映射器将其标题映射到字符串

Question

我有 2 个模型:

public class Client
{
    public Guid Id { get; set; }
    public string FirstName { get; set; }
    public string LastName { get; set; }

    ...

    [ForeignKey("CountryId")]
    public Country Country { get; set; }
    public Guid CountryId { get; set; }
}

和

public class Country
{
    public Guid Id { get; set; }
    public string Title { get; set; }
}

我想显示此虚拟机:

public class ClientDetailsDto
{
    public Guid Id { get; set; }

    ...

    public string Country { get; set; } // Country's title
}

我应该如何获取国家/地区并将其映射到 ClientDetailsDto 中的字符串国家/地区？

我在 Startup 类 (Startup.cs) 中使用 AutoMapper:

AutoMapper.Mapper.Initialize(config =>
{
    config.CreateMap<Entities.Client, Models.ClientDetailsDto>()
        .ForMember(dest => dest.Name, opt => opt.MapFrom(src =>
            $"{src.LastName} {src.FirstName} {src.Patronym}"))
        .ForMember(dest => dest.Age, opt => opt.MapFrom(src =>
            src.Birthdate.GetCurrentAge()))
        // How to get Country's title and map it to ClientDetailsDto.Country?
}

Answer 1

试试这样；

.ForMember(dest => dest.Country, opt => opt.MapFrom(src =>
 src.Country.Title)

完整的 map 看起来像；

config.CreateMap<Entities.Client, Models.ClientDetailsDto>()
    .ForMember(dest => dest.Name, opt => opt.MapFrom(src =>
        $"{src.LastName} {src.FirstName} {src.Patronym}"))
    .ForMember(dest => dest.Age, opt => opt.MapFrom(src =>
        src.Birthdate.GetCurrentAge()))
    .ForMember(dest => dest.Country, opt => opt.MapFrom(src =>
        src.Country.Title));