怎么用Ｃ＃２００５自带的串口类发送和接收ASCII大于127的字符呢

Question

如上，郁闷的要死 ~

Answer 1

这就是一个串口通信类：
【C#】串口操作实用类2007-05-02 09:53         做工业通信有很长时间了，特别是串口（232/485)，有VB/VC/C各种版本的串口操作代码，这些代码也经过了多年的现场考验，应该说是比较健壮的代码，但是目前却没有C#相对成熟的串口操作代码，最近用Moxa的设备开发基于WinCE5.0的串口操作代码，所以就扩充完善了一下串口操作，特别是SendCommand函数，这是我比较常用的主从通信代码，不喜欢用事件或线程接数据，在规定的超时时间内直接循环判断要接收的数据。  public class PortData
     {
        public event PortDataReceivedEventHandle Received;
        public event SerialErrorReceivedEventHandler Error; 
        public SerialPort port;
        public bool ReceiveEventFlag = false;  //接收事件是否有效 false表示有效        public PortData(string sPortName, int baudrate,Parity parity,SerialInterface.SerialMode mode)
         {
             port = new SerialPort(sPortName, baudrate, parity, 8, StopBits.One);
             port.RtsEnable = true;
             port.ReadTimeout = 3000;
             port.DataReceived += new SerialDataReceivedEventHandler(DataReceived);
             port.ErrorReceived += new SerialErrorReceivedEventHandler(ErrorEvent);
         }        ~PortData()
         {
             Close();
         }
        public void Open()
         {
            if (!port.IsOpen)
             {           
                 port.Open();
             }
         }        public void Close()
         {
            if (port.IsOpen)
             {
                 port.Close();
             }
         }
        //数据发送
        public void SendData(byte[] data)
         {
            if (port.IsOpen)
             {
                 port.Write(data, 0, data.Length);
             }
         }
        public void SendData(byte[] data,int offset,int count)
         {
            if (port.IsOpen)
             {
                 port.Write(data, offset, count);
             }
         }
        //发送命令
        public int SendCommand(byte[] SendData, ref  byte[] ReceiveData,int Overtime)
         {            if(port.IsOpen)
             {
                 ReceiveEventFlag = true;        //关闭接收事件
                 port.DiscardInBuffer();         //清空接收缓冲区                 
                 port.Write(SendData, 0, SendData.Length);
                int num=0,ret=0;
                while (num++ < Overtime)
                 {
                    if (port.BytesToRead >= ReceiveData.Length) break;
                     System.Threading.Thread.Sleep(1); 
                 }
                if (port.BytesToRead >= ReceiveData.Length) 
                     ret = port.Read(ReceiveData, 0, ReceiveData.Length);
                 ReceiveEventFlag = false;       //打开事件
                return ret;
             }
            return -1;
         }
 

Answer 2

楼上正解，使用byte[]，不要用string