C# list 取出重复的数据

[qq_24705817]

List<A> aList = new List<A>()
{
new A(){ ID = 1, Phone= 123 },
new A(){ ID = 2, Phone= 222 },
new A(){ ID = 3, Phone= 333 },
new A(){ ID = 4, Phone= 123 },
};


我要取出
new A(){ ID = 1, Phone= 123 },
new A(){ ID = 4, Phone= 123 },

也就是Phone 相同的 ，用Linq 。。。该怎么做呀，虚心求教。。我已经研究了好长时间了。。。

[娃都会打酱油了]

from l in list
group l by l.Phone into g
where g.Count()>0
select g;

[娃都会打酱油了]

from l in list
group l by l.Phone into g
where g.Count()>1
select g;

上面写错了，要改成>1

[江南小鱼]

var result = from r in lst
                         group r by r.Phone into g
                         where g.Count() > 1
                         select g;
//遍历分组结果集
foreach (var item in result)
  {
              foreach (A u in item)
               {
                    Console.WriteLine(u.ID);
               }
}

[john_QQ:2335298917]

2楼3楼是一个方法，也是正确的

[qq_24705817]

太感谢你们了。。谢谢。。我去试试

[caibucaitongxie]

不错不错！值得一看！

[胡同o]

学习了