1. 使用NuGet安裝EntityFramework
2. 創(chuàng)建實體類Student.cs

[Table(nameof(Student ))]
    public class Student 
    {
        [Key]
        public int ID { get; set; }
        public string Name{ get; set; }
    }

3. 創(chuàng)建AppDbContext.cs

public class AppDbContext: DbContext
    {
        public AppDbContext():base("name=connStr")
        {
            //Database.CommandTimeout = 10;
        }        

        // 自定義上下文方法
        // 備注：使用時，直接調(diào)用DoAction()即可，無需創(chuàng)建上下文。
        public static void DoAction(Action<AppDbContext> action)
        {
            try
            {
                using (AppDbContext db = new AppDbContext())
                {
                    action(db);
                }
            }
            catch (Exception ex)
            {
                string log = $"方法名稱：{ nameof(DoAction)} \n"
                    + $"Message：{ ex.Message } \n"
                    + $"InnerException：{ex.InnerException} \n "
                    + $"StackTrace：{ ex.StackTrace}";
                Log4Helper.Error(typeof(AppDbContext), log);

                throw ex;
            }
        }

        public DbSet<Student> Student { get; set; }

        protected override void OnModelCreating(DbModelBuilder modelBuilder)
        {
            base.OnModelCreating(modelBuilder);
            //當(dāng)前代碼所在程序集，加載所有的繼承自EntityTypeConfiguration為模型配置類  modelBuilder.Configurations.AddFromAssembly(Assembly.GetExecutingAssembly());
        }
    }