停止线程异常

Question

串口打开后，开启接收线程，程序正常运行 serialsReceiveThread = new Thread(new ThreadStart(serialReceive));
 serialsReceiveThread.Start();//开始接收线程当我关闭串口时，应该先停止接收线程，但是报异常了，何解？代码如下：
//根据当前串口对象，来判断操作
            if (comm.IsOpen)
            {
                try
                {
                    serialsReceiveThread.Abort();
                    if (ThreadState.Stopped == serialsReceiveThread.ThreadState)
                    {
                        //打开时点击，则关闭串口
                        comm.Close();
                    }
                }
                catch (Exception ex) 
                {
                    MessageBox.Show(ex.Message);
                }
                
            }

Answer 1

你终止线程时，线程是否在正常运行，还是已经挂起，你参考 Thread..::.Abort  的msdn看看里面的说明

Answer 2

我换成这样   serialsReceiveThread.Suspend(); 运行时，界面不报异常
 
 貌似这样不可取呀 我的接收线程里是个
 
 while(true)
 {}  if (comm.IsOpen)
            {
                try
                {
                    serialsReceiveThread.Suspend();
                    if (ThreadState.Stopped == serialsReceiveThread.ThreadState)
                    {
                        //打开时点击，则关闭串口
                        comm.Close();
                    }
                }
                catch (Exception ex) 
                {
                    MessageBox.Show(ex.Message);
                }
                
            }

Answer 3

  serialsReceiveThread.Suspend(); 这方法都已经废除了。做个空判断跳过即可。

Answer 4

 if (comm.IsOpen)
            {
                try
                {
                    //serialsReceiveThread.Suspend();
                    serialsReceiveThread.Abort();
                    comm.Close();                   
                }
                catch 
                {
                    return;
                }
                
            }
上面那样也不行啊还是有下面的异常未处理 System.ObjectDisposedException
  Message=已关闭 Safe handle
  Source=mscorlib
  ObjectName=""
  StackTrace:
       在 Microsoft.Win32.Win32Native.SetEvent(SafeWaitHandle handle)
       在 System.Threading.EventWaitHandle.Set()
       在 System.IO.Ports.SerialStream.AsyncFSCallback(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* pOverlapped)
       在 System.Threading._IOCompletionCallback.PerformIOCompletionCallback(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* pOVERLAP)
  InnerException: 

Answer 5

lz是C板块大神啊。while(true){}可以改成 while(true)
{  CheckPass();
//other process
}在起线程的时候生成一个Dictionary<string, ThreadStatus>string是Thread的唯一标识
enum ThreadStatus{}里面写上你需要的线程的状态。CheckPass()检测当前线程的状态，根据状态每个线程自身决定自身的运行状态。

Answer 6

 comm.Close();
 serialsReceiveThread.Abort();
 把这两句掉了个个，就暂时没有问题了，，原来是abort（），在上 呵呵不是最佳办法，测试DEMO 也凑合用 呵呵