System.Threading命名空间 System.Object System.Delegate System.ValueType System.MulticastDelegate System.Threading.Thread System.Exception System.Threading.ThreadStart System.SystemException System.Enum System.Threading. System.Threading. System.Threading. ThreadPriority ThreadState ThreadAbortExcep System.Thread tion StateException 11 11 System.Threading 命名空间 System.Object System.Threading. ThreadState System.Delegate System.Threading. ThreadPriority System.MulticastDelegate System.Threading.ThreadStart System.Threading.Thread System.Threading. ThreadAbortExcep tion System.Thread StateException System.SystemException System.Exception System.Enum System.ValueType