LinqJoin方法

Linq知识点总结：

（一）、构建两个List泛型集合

List<Person> list=new List<Person>()
            {
            new Person(){ Name="Olive",Sex="女",age=22},
            new Person(){ Name="Moyao",Sex="男",age=23},
            new Person(){ Name="Momo",Sex="女",age=22},
            new Person(){ Name="Only",Sex="女",age=20},
            new Person(){ Name="Love",Sex="女",age=21},
            new Person(){ Name="For",Sex="女",age=22},
            new Person(){ Name="Remote",Sex="男",age=23},
            new Person(){ Name="Snow",Sex="女",age=23}
            };
            List<Profession> listprofession = new List<Profession>

           {

               new Profession() { Name = "Olive", Zhiye = "会计" },

               new Profession() { Name = "Remote", Zhiye = "IT Coder" },

               new Profession() { Name = "BLove", Zhiye = "学生" },

               new Profession(){ Name="AFor",Zhiye="作家"}

           };

（二）、使用Linq中的Join方法

var showzhiye = from p in list
                            join pf in listprofession on p.Name equals pf.Name
                            select new
                            {
                                Name = p.Name,
                                ZhiYe = pf.Zhiye
                            };

（三）、控制台输出

foreach(var z in showzhiye)
            {
                Console.WriteLine("姓名:" + z.Name + "职业：" + z.ZhiYe);
            }

Console.WriteLine("使用Join()方法");
            var showzhiye2 = list.Join(listprofession, p => p.Name, pf => pf.Name, (p, pf) => new
            {
                Name = p.Name,
                Zhiye = pf.Zhiye
            });
            foreach (var z in showzhiye2)
            {
                Console.WriteLine("姓名:" + z.Name + "职业：" + z.Zhiye);
            }