コード例 #1
0
ファイル: Many2ManyClass.cs プロジェクト: zealoussnow/OneCode
        // 插入新的person到现存的course
        public static void InsertPerson()
        {
            using (EFM2MEntities context = new EFM2MEntities())
            {

                Person person = new Person()
                {
                    FirstName = "Ji",
                    LastName = "Zhou"
                };

                person.Course.Add(context.Course.FirstOrDefault());

                context.AddToPerson(person);

                try
                {
                    Console.WriteLine("Inserting Person {0} {1} .",
                        person.FirstName,
                        person.LastName);

                    context.SaveChanges();

                    Query();
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.Message);
                }
            }
        }
コード例 #2
0
ファイル: Many2ManyClass.cs プロジェクト: zealoussnow/OneCode
        // 插入新的person包括新的course
        public static void InsertPersonWithCourse()
        {
            using (EFM2MEntities context = new EFM2MEntities())
            {

                Person person = new Person()
                {
                    FirstName = "Yichun",
                    LastName = "Feng"
                };

                Course course = new Course()
                {
                    CourseID = 2208,
                    Title = "UML"
                };

                person.Course.Add(course);

                context.AddToPerson(person);

                try
                {
                    Console.WriteLine("Inserting Person {0} {1} with course "
                     + "{2}.", person.FirstName, person.LastName,
                     course.Title);

                    context.SaveChanges();

                    Query();
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.Message);
                }
            }
        }
コード例 #3
0
ファイル: Many2ManyClass.cs プロジェクト: zealoussnow/OneCode
        // 更新一个现存的person
        public static void UpdatePerson()
        {
            using (EFM2MEntities context = new EFM2MEntities())
            {
                Person person = new Person();

                person.PersonID = 34;

                context.AttachTo("Person", person);

                person.FirstName = "Monica";

                Course course = new Course()
                {
                    CourseID = 2209,
                    Title = "Operating System"
                };

                person.Course.Add(course);

                try
                {
                    Console.WriteLine(
                       "Modifying Person 34's last to {0} and add course {1}"
                       + " to it", person.LastName, course.Title);

                    context.SaveChanges();

                    Query();
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.Message);
                }
            }
        }