在Automapper 11.0.0版本中，当进行List到Dictionary的类型转换时，会抛出类型映射错误。此时需要手动设置Dictionary类型转换规则为CreateFromPairs：

using AutoMapper;
using System.Collections.Generic;

public class Foo
{
  public string Name { get; set; }
  public int Age { get; set; }
}

public class Bar
{
  public Dictionary Properties { get; set; }
}

var config = new MapperConfiguration(cfg =>
{
  cfg.CreateMap, Dictionary>()
    .ConvertUsing(list => list.ToDictionary(x => x.Name, x => x.Age));
  //手动设置Dictionary类型转换规则为CreateFromPairs
  cfg.CreateMap, Bar>()
    .ForMember(dest => dest.Properties, opt => opt.MapFrom(src => src));
});

var fooList = new List
{
  new Foo { Name = "John", Age = 25 },
  new Foo { Name = "Peter", Age = 30 },
  new Foo { Name = "Bob", Age = 20 }
};

var mapper = config.CreateMapper();
var bar = mapper.Map, Bar>(fooList);

上述代码示例中，我们手动设置了List到Dictionary的类型转换规则，并映射到了Bar类的Properties属性中，从而成功解决了类型映射错误的问题。