netcore mvc efcore 简单框架搭建+增删改查

//连接数据库   "AppConfig": {     "AesKey": "11*222sdf52sf2f2fsdf/.*222,ssddd",     "DbConn": "Server=localhost;port=3306;database=user;uid=root;pwd=root;Convert Zero Datetime=True;"    }

public class AppConfig     {         /// <summary>         /// Aes密钥         /// </summary>         public string AesKey { get; set; }          /// <summary>         /// 数据库链接字符串         /// </summary>         public string DbConn { get; set; }     }

 public class NetcoremvcDbcontext : DbContext     {         private string _connectionString;            protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)         {             var connectionString = _connectionString;             //连接数据库UseMySql关键词             //MaxBatchSize一个指示将编译为单个批处理的最大页数的整数值。 默认页数为 1000。(当前最大处理量是30条)             optionsBuilder.UseMySql(connectionString, b => b.MaxBatchSize(30));           }         public NetcoremvcDbcontext(IOptionsSnapshot<AppConfig> options)         {             _connectionString = options.Value.DbConn;         }          public DbSet<User> User { get; set; }     }

 public class User     {         public string Id { get; set; }          public string Name { get; set; }          public string Phone { get; set; }          public int Age { get; set; }          public string Like { get; set; }     }

 services.AddDbContext<NetcoremvcDbcontext>();  services.Configure<AppConfig>(Configuration.GetSection("AppConfig"));