为list< T>。载有（）是线程调用 - C＃
我的理解是，如果你正在使用C＃泛型列表（列表），它可以支持多个并发读取器，但只有一个作家。而当你引入一个作家到混合，你还必须提供同步结构，以使操作线程安全的。
My understanding is that if you are using a generic list (List) in C#, that it can support multiple concurrent readers but only one writer. And when you introduce a writer into the mix, you must also provide synchronization constructs to make the operations thread safe.
时List.Contains认为读操作？换句话说，如果我调用这个方法，我需要担心一个作家可以在同一时间被写入这个名单？
Is List.Contains considered a read operation? In other words, if I am calling this method, do I need to worry that a writer may be writing to this List at the same time?
是的，你应该。基本上我都会同步进行的任何的，如果可以用于在同一时间写列表操作。
Yes, you should. Basically I would synchronize for any operation if the list might be used for writing at the same time.
一般来说，我觉得收藏品分为两类 - 这是创建，初始化，然后就再也没有再次改变（线程安全的）的人，和突变随着时间的人（不是线程安全的，所有访问锁）
Generally I find collections fall into two categories - ones which are created, initialized and then never changed again (thread-safe), and ones which are mutated over time (not thread-safe, lock for all access).