EF最基本的增删改查

使用EF进行最基本的增删改查，直接贴代码。

        static void Main(string[] args)
        {
            PeopleEntities context = new PeopleEntities();
            //增
            //context.Student.Add(new Student() { Name = "heyuke", Age = 18 });
            //context.SaveChanges();
            //Console.WriteLine("ok");
            //Console.ReadLine();

            //删
            //var result = from s in context.Student
            //             where s.Id==4
            //             select s;
            //context.Student.Remove(result.FirstOrDefault());
            //context.SaveChanges();

            //改
            var result = from s in context.Student
                         where s.Id == 1
                         select s;
            Student s1 = result.FirstOrDefault();
            s1.Name = "heyuke";
            context.SaveChanges();

            //查
            // context.Student.Select(s => s);
            //linq to sql
            //var result = from s in context.Student
            //             select s;
            //Console.WriteLine(result.Count());
            //Console.ReadLine();
        }