// 查询合并后的表中的第一个Person
        public static void Query()
        {
            using (EFTblMergeEntities context = new EFTblMergeEntities())
            {
                Person person = (context.Person).First();

                Console.WriteLine("{0}   \n{1} {2}   \n{3}",
                                  person.PersonID,
                                  person.FirstName,
                                  person.LastName,
                                  person.Address);
            }
        }
        // 查询合并后的表中的第一个Person
        public static void Query()
        {
            using (EFTblMergeEntities context = new EFTblMergeEntities())
            {
                Person person = (context.Person).First();

                Console.WriteLine("{0}   \n{1} {2}   \n{3}",
                    person.PersonID,
                    person.FirstName,
                    person.LastName,
                    person.Address);
            }
        }