EF Core Code First

1.安装 EntityFramework Core;EntityFramework Core.SqlServer;EntityFramework Core.Tools 

2.appsettings.json文件中添加数据库连接字符串

  "ConnectionStrings": {
    "SqlServer": "Data Source=.;Initial Catalog=note;User Id=sa;Password=sa;"
  }

3. startup.cs 文件中ConfigureServices()方法中注册数据库lia连接服务

            var connection = Configuration.GetConnectionString("SqlServer");
            services.AddDbContext(options => options.UseSqlServer(connection,b=> b.MigrationsAssembly("NetNoteproject")));

MigrationsAssembly("项目名“）//项目名千万名错了

3.程序包管理器控制台中运行 Add-Migration Note   //Note是数据库名称

4.Update-DataBase //应用到数据库修改