ArrayList的VS名单＆LT;＆GT;在C＃中

是，pretty得多。 列表＆LT; T＆GT; 是一个泛型类。它支持存储特定类型的值，而无需进行转换，或从对象（这将招致装箱/拆箱的开销时， T 是的ArrayList 情况下）值类型。 的ArrayList 只需商店对象引用。作为一个泛型集合，它实现了通用的IEnumerable＆LT; T＆GT; 接口，可以在LINQ很容易地使用（无需任何铸造或 OfType 调用）。

Yes, pretty much. List<T> is a generic class. It supports storing values of a specific type without casting to or from object (which would have incurred boxing/unboxing overhead when T is a value type in the ArrayList case). ArrayList simply stores object references. As a generic collection, it implements the generic IEnumerable<T> interface and can be used easily in LINQ (without requiring any Cast or OfType call).

的ArrayList 所属的天C＃没有泛型。这是有利于的pcated德$ P $列表与LT; T＆GT; 。你不应该的ArrayList 在新的code的目标使用.NET> = 2.0，除非你有一个使用它的一个旧的API接口。

ArrayList belongs to the days that C# didn't have generics. It's deprecated in favor of List<T>. You shouldn't use ArrayList in new code that targets .NET >= 2.0 unless you have to interface with an old API that uses it.