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直接上代码

public struct SerialPara    {        private string portName;        public string PortNameSetGet        {            get { return portName; }            set { portName = value; }        }        private int baudRate;        public int BaudRateSetGet        {            get { return baudRate; }            set { baudRate = value; }        }        private Parity parity;        public Parity ParitySetGet        {            get { return parity; }            set { parity = value; }        }        private int databit;        public int DatabitSetGet        {            get { return databit; }            set { databit = value; }        }        private StopBits stopBits;        public StopBits StopBitsSetGet        {            get { return stopBits; }            set { stopBits = value; }        }    }    public class SerialCommClass    {        SerialPara sp;        public SerialCommClass(SerialPara sp_temp)        {            this.sp = new SerialPara();            sp.PortNameSetGet = sp_temp.PortNameSetGet;            sp.BaudRateSetGet = sp_temp.BaudRateSetGet;            sp.ParitySetGet = sp_temp.ParitySetGet;            sp.DatabitSetGet = sp_temp.DatabitSetGet;            sp.StopBitsSetGet = sp_temp.StopBitsSetGet;        }        public bool Serial_Connect(ref SerialPort serialPort)        {            /*check serial parameter*/            if(!checkSerialPara(this.sp))                return false;                        /*Serial Port configuration*/            serialPort.PortName = sp.PortNameSetGet;            serialPort.BaudRate = sp.BaudRateSetGet;            serialPort.DataBits = sp.DatabitSetGet;            serialPort.Parity = sp.ParitySetGet;            serialPort.StopBits = sp.StopBitsSetGet;            try            {                serialPort.Open();            }            catch (Exception exc)            {                return false;            }            return true;        }        //发送字符串数据            public bool SendStringData(ref SerialPort serialPort,string data)        {            if (serialPort.IsOpen)            {                serialPort.Write(data);                return true;            }            else            {                return false;            }        }                //发送二进制数据            public string SendBytesData(ref SerialPort serialPort, string data)        {            //byte[] bytesSend = System.Text.Encoding.Default.GetBytes(data);            byte[] bytesSend = strToToHexByte(data);            if (bytesSend == null)                return null;            try            {                serialPort.Write(bytesSend, 0, bytesSend.Length);                return bytesSend.Length + "";            }            catch (Exception e)            {                return null;            }        }        /*check serial parameter*/        private bool checkSerialPara(SerialPara sp)        {            if(sp.PortNameSetGet==null)               return false;            return true;        }        /// <summary>         /// 字符串转16进制字节数组         /// </summary>         /// <param name="hexString"></param>         /// <returns></returns>         private static byte[] strToToHexByte(string hexString)        {            hexString = hexString.Replace(" ", "");            if (hexString.Substring(0, 2) == "0x" || hexString.Substring(0, 2) == "0X")                hexString = hexString.Substring(2, hexString.Length - 2);            byte[] returnBytes = new byte[hexString.Length / 2];            try            {                for (int i = 0; i < returnBytes.Length; i++)                    returnBytes[i] = Convert.ToByte(hexString.Substring(i * 2, 2), 16);                    //returnBytes[returnBytes.Length - i - 1] = Convert.ToByte(hexString.Substring(i * 2, 2), 16);            }            catch (Exception e)            {                return null;            }            return returnBytes;        }     }

c#串口通信类代码可以直接调用