C# 中的线程本地与局部变量

下面的代码中这个线程名称和本地名称有什么区别？它们都是 ThreadLocal 吗？

// Thread-Local variable that yields a name for a thread
ThreadLocal<string> ThreadName = new ThreadLocal<string>(() =>
{
    return "Thread" + Thread.CurrentThread.ManagedThreadId;
});
// Action that prints out ThreadName for the current thread
Action action = () =>
{
    // If ThreadName.IsValueCreated is true, it means that we are not the 
    // first action to run on this thread. 
    bool repeat = ThreadName.IsValueCreated;
    String LocalName = "Thread" + Thread.CurrentThread.ManagedThreadId;
    System.Diagnostics.Debug.WriteLine("ThreadName = {0} {1} {2}", ThreadName.Value, repeat ? "(repeat)" : "", LocalName);
};
// Launch eight of them.  On 4 cores or less, you should see some repeat ThreadNames
Parallel.Invoke(action, action, action, action, action, action, action, action);
// Dispose when you are done
ThreadName.Dispose();