C#简易串口通讯实例

【实例截图】

【核心代码】

        //查找串口
        private void FindSerial()
        {
            //获取当前串口
            string[] PortNames = SerialPort.GetPortNames();
            PortList.Items.Clear();
            foreach (string PortName in PortNames)
                PortList.Items.Add(PortName);
            //显示第一个串口
            if (PortList.Items.Count > 0)
                PortList.Text = PortList.Items[0].ToString();
        }
        
        //串口接收数据
        private void MyPort_DataReceived(object sender, SerialDataReceivedEventArgs e)
        {
            try
            {
                #region 确保串口缓冲区数据长度DataLen>=PackSize
                int DataLen = MyPort.BytesToRead; //串口缓冲区可用长度
                while (DataLen < PackSize)
                {
                    Thread.Sleep(10); //数据长度不够，等10ms
                    DataLen = MyPort.BytesToRead;
                }
                #endregion
                //读取PackSize个自己到PackData数组
                byte[] PackData = new byte[PackSize]; 
                MyPort.Read(PackData, 0, PackSize);
                //委托DoRecvData（）处理串口数据
                MySerialInvoke mi = new MySerialInvoke(DoRecvData);
                BeginInvoke(mi, new object[] { PackData });
            }
            catch (Exception EX)
            {
                MessageBox.Show(EX.Message);
            }
        }

        //处理串口接收的数据
        private void DoRecvData(byte[] PackData)
        {
            try
            {
                byte[] RecvData = new byte[PackSize];
                Array.Copy(PackData, RecvData, PackSize);
                //直接显示
                RecvList.Items.Add(DateTime.Now.ToString() "收到：" BitConverter.ToString(RecvData));
                //按GB2312解码
                Encoding en = Encoding.GetEncoding("GB2312");
                RecvList.Items.Add("GB2312："   en.GetString(RecvData));
            }
            catch (Exception EX)
            {
                RecvList.Items.Add("Error:" EX.Message);
            }
        
       }