一个很简单的有关问题 Linq to object

一个很简单的问题 Linq to object
看代码....

C# code

List<string> list = new List<string> { "1", "3", "2", "3", "4" };string strs = "";foreach (var item in list){     strs += item;}

C# code

List<string> list = new List<string> { "1", "3", "2", "3", "4" };string strs = (from s in list               select s).Aggregate((s, next) => s + next);但是使用 + 来连接字符串，性能低下，极大浪费