在自动映射程序中使用CreateMap时访问列表的属性

// 定义源对象和目标对象
public class SourceObject
{
    public List<int> Numbers { get; set; }
}

public class DestinationObject
{
    public List<int> Numbers { get; set; }
}

// 使用CreateMap和ForEach方法进行对象映射
var configuration = new MapperConfiguration(cfg =>
{
    cfg.CreateMap<SourceObject, DestinationObject>()
        .ForMember(dest => dest.Numbers, opt => opt.MapFrom(src => src.Numbers))
        .ForMember(dest => dest.Numbers, opt => opt.ConvertUsing((src, dest) =>
        {
            src.Numbers.ForEach(num => dest.Numbers.Add(num * 2)); // 对列表中的每个对象进行属性访问
            return dest;
        }));
});

var mapper = configuration.CreateMapper();

// 执行对象映射
var source = new SourceObject { Numbers = new List<int> { 1, 2, 3, 4 } };
var destination = mapper.Map<DestinationObject>(source);

// 输出目标对象的属性值
Console.WriteLine(string.Join(", ", destination.Numbers)); // 输出: 2, 4, 6, 8