极简方式添加EntityFramework

  1. 使用NuGet安装EntityFramework
  2. 创建实体类Student.cs
[Table(nameof(Student ))]
    public class Student 
    {
        [Key]
        public int ID { get; set; }
        public string Name{ get; set; }
    }
  1. 创建AppDbContext.cs
public class AppDbContext: DbContext
    {
        public AppDbContext():base("name=connStr")
        {
            //Database.CommandTimeout = 10;
        }        

        // 自定义上下文方法
        // 备注:使用时,直接调用DoAction()即可,无需创建上下文。
        public static void DoAction(Action action)
        {
            try
            {
                using (AppDbContext db = new AppDbContext())
                {
                    action(db);
                }
            }
            catch (Exception ex)
            {
                string log = $"方法名称:{ nameof(DoAction)} \n"
                    + $"Message:{ ex.Message } \n"
                    + $"InnerException:{ex.InnerException} \n "
                    + $"StackTrace:{ ex.StackTrace}";
                Log4Helper.Error(typeof(AppDbContext), log);

                throw ex;
            }
        }

        public DbSet Student { get; set; }

        protected override void OnModelCreating(DbModelBuilder modelBuilder)
        {
            base.OnModelCreating(modelBuilder);
            //当前代码所在程序集,加载所有的继承自EntityTypeConfiguration为模型配置类  modelBuilder.Configurations.AddFromAssembly(Assembly.GetExecutingAssembly());
        }
    }

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