//读取连接串口
            string[] mPortNames = SerialPort.GetPortNames();
            this.txtPortName.Items.Clear();
            foreach (var item in mPortNames)
            {
                this.txtPortName.Items.Add(item);
            }

            this.txtParity.Items.Clear();
            foreach (string item in Enum.GetNames(typeof(Parity)))
            {
                this.txtParity.Items.Add(item);
            }
            this.txtParity.DropDownStyle = ComboBoxStyle.DropDownList;

            this.txtStopBits.Items.Clear();
            foreach (string item in Enum.GetNames(typeof(StopBits)))
            {
                this.txtStopBits.Items.Add(item);
            }
            this.txtStopBits.DropDownStyle = ComboBoxStyle.DropDownList;

            this.txtHandshake.Items.Clear();
            foreach (string item in Enum.GetNames(typeof(Handshake)))
            {
                this.txtHandshake.Items.Add(item);
            }
            this.txtHandshake.DropDownStyle = ComboBoxStyle.DropDownList;

/// <summary>
        /// 获取串口信息
        /// </summary>
        /// <param name="setting"></param>
        /// <param name="fail"></param>
        /// <returns></returns>
        public static SerialPort GetSerialPort(SerialPortSet setting, out string fail)
        {
            fail = string.Empty;
            try
            {
                _SerialPort = new SerialPort();
                _SerialPort.PortName = setting.PortName;
                _SerialPort.BaudRate = setting.BaudRate.ToInt32();
                _SerialPort.Parity = (Parity)Enum.Parse(typeof(Parity), setting.Parity, true);
                _SerialPort.DataBits = setting.DataBits.ToInt32();
                _SerialPort.StopBits = (StopBits)Enum.Parse(typeof(StopBits), setting.StopBits, true);
                _SerialPort.Handshake = (Handshake)Enum.Parse(typeof(Handshake), setting.Handshake, true);

                return _SerialPort;
            }
            catch (Exception ex)
            {
                fail = "打开串口 异常：" + ex.Message;
                return null;
            }
        }

/// <summary>
        /// 发送命令或消息
        /// </summary>
        /// <param name="content"></param>
        private void SendByte(string content)
        {
            try
            {
                if (this.ckbShowSend.Checked)
                    this.AppendText(content);

                byte[] buffer;
                if (this.txtSendEncoding.Text.Length <= 0)
                    buffer = Encoding.Default.GetBytes(this.txtContent.Text);
                else if (this.txtSendEncoding.Text == "16进制")
                    buffer = this.HexToByte(this.txtContent.Text);
                else
                    buffer = Encoding.GetEncoding(this.txtSendEncoding.Text).GetBytes(this.txtContent.Text);
                //向串口发送数据
                this._SerialPort.Write(buffer, 0, buffer.Length);
            }
            catch (Exception ex)
            {
                WinMessageBox.Warning("发送失败：" + ex.Message);
            }
        }

/// <summary>
        /// 接收读取返回结果
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void SerialPort_DataReceived(object sender, SerialDataReceivedEventArgs e)
        {
            byte[] buffer = new byte[this._SerialPort.ReadBufferSize];
            int count = this._SerialPort.Read(buffer, 0, buffer.Length);
            //string str = Encoding.Default.GetString(readBuffer).TrimEnd('\0');
            if (this.txtEncoding.Text.Length <= 0)
                this.AppendText(System.Text.Encoding.Default.GetString(buffer,0, count));
            else if (this.txtEncoding.Text == "16进制")
                this.AppendText(this.ByteToHex(buffer,0,count));
            else
                this.AppendText(System.Text.Encoding.GetEncoding(this.txtEncoding.Text).GetString(buffer,0,count));
        }