Winfrom操作线程

//开始测试
listAddItems(thTest.ThreadState.ToString());
listAddItems("开始测试");
if (thTest.ThreadState == ThreadState.Unstarted)
    thTest.Start();
if (thTest.ThreadState == ThreadState.Suspended)
    thTest.Resume();
listAddItems(thTest.ThreadState.ToString());
//
listAddItems(thTest.ThreadState.ToString());
serialPort.Close();
listAddItems("终止测试");
if (thTest.ThreadState == ThreadState.WaitSleepJoin)
    thTest.Suspend();
listAddItems(thTest.ThreadState.ToString());