一、代码框架搭建

搭建如下代码架构：

重点含EntityFrameworkCore工程，该工程中包含AppDbContext.cs和数据表实体AggregateObject

 1、AppDbContext 代码案例

//AppDbContext 代码案例

using Microsoft.EntityFrameworkCore;

namespace EntityFrameworkCore
{

    public class AppDbContext : DbContext
    {
        public AppDbContext(DbContextOptions<AppDbContext> options) : base(options)
        {
        }

        protected override void OnModelCreating(ModelBuilder modelBuilder)
        {
            base.OnModelCreating(modelBuilder);

            // 增加以下代码配置
            modelBuilder.ConfigDatabaseDescription();
        }


        public DbSet<CFUserAggregate> CFUserAggregate { get; set; } // 示例：User 是你的实体类
        // 添加其他 DbSet<T> 来表示其他数据表
    }

}

2、实体案例 

1）AggregateRootBase类：

     存放表公共字段，例状态、创建时间等 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.ComponentModel.DataAnnotations;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations.Schema;

namespace EntityFrameworkCore
{
    public abstract class AggregateRootBase
    {

        [Key] // 主键
        [StringLength(36)] // 字符串长度限制
        [DbDescription("主键ID")]
        public Guid? Id { get; set; }

        [StringLength(36)]
        [DbDescription("创建人ID")]
        public Guid? CreateUserGuid { get; set; }

        [Required]
        [DbDescription("创建时间")]
        public DateTime? CreateDateTime { get; set; }

        [StringLength(36)]
        [DbDescription("修改人ID")]
        public Guid? ModifyUserGuid { get; set; }

        [DbDescription("修改时间")]
        public DateTime? ModifyDateTime { get; set; }

    }
}

2）CFUserAggregate 实体 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.ComponentModel.DataAnnotations;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations.Schema;

namespace EntityFrameworkCore
{
    [Table("CF_User")]
    [DbDescription("用户表")]
    public class CFUserAggregate : AggregateRootBase
    {
        [Required]
        [StringLength(15)] // 字符串长度限制
        [DbDescription("登录人手机号码")]
        public string PhoneNumber { get; set; }

        [Required]
        [StringLength(100)] // 字符串长度限制
        [DbDescriptio