private void SendC(SendStrC sendSetC)
{
txtdataC.Clear();
ReceiveDataCClear();
receiveDataCntC = 0;
if (SendingC == true)
{
return; //如果当前正在发送，则取消本次发送，本句注释后，可能阻塞在ComSend的lock处
}
_ComSendC = new Thread(new ParameterizedThreadStart(ComSendC)); //new发送线程
_ComSendC.Start(sendSetC); //发送线程启动
}
private void ComSendC(object objC)
{
lock (this) //由于send()中的if(Sending == true) return，所以这里不会产生阻塞，如果没有那句，多次启动该线程，会在此处排队
{
if (port != null)
{
try
{
SendingC = true;
SendStrC tempC = (SendStrC)objC;
byte[] comSendDataC = tempC.SendData;
port.Write(comSendDataC, 0, comSendDataC.Length);
SendingC = false;
}
catch (Exception err)
{
MessageBox.Show("命令发送失败：" + err.Message, "提示");
}
}
}
}
