摘要：
1 //Linq 2 3 //var result = from p in personList 4 // group p by p.Id 5 // into grouped 6 ... 阅读全文
摘要：
IEnumerable list = new List { new Person {Age = 12, Id = 2}, new Person {Age = 22, Id = 3}, new Person {Age = 15, Id = 1}... 阅读全文