控制台程序为例，展示该demo

一、安装Nuget包

二、文件结构

三、AutoMapperProfile.cs（映射规则）

using AutoMapper;

namespace ConsoleApp1
{
    public class AutoMapperProfile : Profile
    {
        public AutoMapperProfile()
        {
            CreateMap<Student, Teacher>()
                .ForMember(dest => dest.FullName, opt => opt.MapFrom(src => src.Name));//配置不同名的字段映射
                                //其他字段：字段名称一样的自动映射

        }
    }
}

四、Model.cs（实体模型）

namespace ConsoleApp1
{
    public class Model
    {
    }
    public class Student
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public int Age { get; set; }
    }

    public class Teacher
    {
        public int Id { get; set; }
        public string FullName { get; set; }
        public int Age { get; set; }
    }
}

五、Program.cs（程序入口）

using AutoMapper;

namespace ConsoleApp1
{
    internal class Program
    {
        static void Main(string[] args)
        {
            // 配置规则
            var configuration = new MapperConfiguration(cfg =>
            {
                cfg.AddProfile<AutoMapperProfile>();
            });

            // 创建映射器
            IMapper mapper = configuration.CreateMapper();

            // 创建学生实体
            var student = new Student
            {
                Id = 1,
                Name = "小苏",
                Age = 20
            };

            // 映射成老师
            var teacher = mapper.Map<Teacher>(student);

            Console.WriteLine($"Teacher: Id={teacher.Id}, FullName={teacher.FullName}, Age={teacher.Age}");
            //输出：Teacher: Id=1, FullName=小苏, Age=20

        }
    }
}