自己编写 EntityTypeConfiguration

1.新建类库 EFCore.EntityTypeConfig ，安装nuget  PM> Install-Package Microsoft.EntityFrameworkCore

 

2.新建接口IEntityTypeConfiguration

using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Metadata.Builders;
using System;
using System.Collections.Generic;
using System.Text;

namespace EFCore.EntityTypeConfig
{
  public  interface IEntityTypeConfiguration
    {
        void Map(ModelBuilder bulder);
    }
    public interface IEntityTypeConfiguration<T>:IEntityTypeConfiguration where T:class
    {
        void Map(EntityTypeBuilder<T> builder);
    }
}

IEntityTypeConfiguration