关于串口同步问题

[buduanxuexi]

我现在有个问题是这样的，我要往串口发送数据，等待其返回的数据进行判断，然后继续发送，再继续等待……

请问我该怎么弄？

private void serialPort_COM_DataReceived(object sender, System.IO.Ports.SerialDataReceivedEventArgs e)
{
#region

string tmp = this.serialPort_COM.ReadExisting();
this.Invoke(new EventHandler(recv), tmp);

#endregion
}

像这样是我被动的去接受，而不是我主动去接收判断

[cml_wll_4502]

datas = new byte[lstFrame.Count];

lstFrame.CopyTo(datas, 0);

if (meter1 == null)

{

meter1 = new TestMeter();

meter1.DataArrived += new TestMeter.DataArrivedHandler(meter1_DataArrived);

}

// 打开端口

bResult = meter1.OpenComm();

if (!bResult)

{

strData = meter.ErrMsg;

return false;

}

// 发送数据

Sleep(0); bWait = false;

bResult = meter1.SendData(datas);

Sleep(0);

if (!bResult)

{

meter1.CloseComm();

strData = meter1.ErrMsg;

return false;

}