定义：
SerialPort ComDevice = new SerialPort();
在开启串口前 设置前后文本转换的字符编码
代码：ComDevice.Encoding = System.Text.Encoding.GetEncoding("GB2312");//此行非常重要 可解决接收中文乱码问题
接收代码：
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#region 串口相关操作 SerialPort ComDevice = new
SerialPort(); private
void
GetComList() { //获取可用串口列表 string[] ports = SerialPort.GetPortNames(); foreach
(string
port in
ports) { cbbComList.Properties.Items.Add(port); } if
(cbbComList.Properties.Items.Count > 0) { cbbComList.SelectedIndex = 0; cbbComList.Enabled = true; } } private
void
btnComOpen_Click(object
sender, EventArgs e) { if
(btnComOpen.Tag.ToString() == "0") { ComDevice.PortName = cbbComList.SelectedItem.ToString(); ComDevice.BaudRate = 115200; ComDevice.Parity = (Parity)0; ComDevice.DataBits = 8; ComDevice.StopBits = (StopBits)1; ComDevice.Encoding = System.Text.Encoding.GetEncoding("GB2312");//此行非常重要 可解决接收中文乱码问题 try { ComDevice.Open(); } catch
(Exception ex) { MessageBox.Show(ex.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error); return; } btnComOpen.Text = "关 闭"; btnComOpen.Tag = "1"; picComStatus.Image = Properties.Resources.green; ComDevice.DataReceived += new
SerialDataReceivedEventHandler(ComDevice_DataReceived); } else { try { ComDevice.Close(); } catch
(Exception ex) { MessageBox.Show(ex.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error); } btnComOpen.Text = "打 开"; btnComOpen.Tag = "0"; picComStatus.Image = Properties.Resources.red; } } /// <summary> /// 发送数据 ---此代码在发送时都是转换成十六进制进行发送 /// </summary> private
void
Send(string
cmd, bool
HexCmd) { if
(cmd == null) return; if
(cmd.Length > 0) { if
(ComDevice.IsOpen == true) { byte[] SendBytes = null; string
SendData = cmd; if
(HexCmd == true) { //16进制发送 try { //剔除所有空格 SendData = SendData.Replace(" ", ""); if
(SendData.Length % 2 == 1) {//奇数个字符 SendData = SendData.Remove(SendData.Length - 1, 1);//去除末位字符 } List<string> SendDataList = new
List<string>(); for
(int
i = 0; i < SendData.Length; i = i + 2) { SendDataList.Add(SendData.Substring(i, 2)); } SendBytes = new
byte[SendDataList.Count]; for
(int
j = 0; j < SendBytes.Length; j++) { SendBytes[j] = (byte)(Convert.ToInt32(SendDataList[j], 16)); } } catch { XtraMessageBox.Show("请输入正确的16进制数据！", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error); } } else { System.Text.Encoding chs = System.Text.Encoding.GetEncoding("gb2312"); byte[] bytes = chs.GetBytes(cmd); string
str = ""; for
(int
i = 0; i < bytes.Length; i++) { str += string.Format("{0:X2}", bytes[i]); } List<string> SendDataList = new
List<string>(); for
(int
i = 0; i < str.Length; i = i + 2) { SendDataList.Add(str.Substring(i, 2)); } SendDataList.Add("0D"); SendBytes = new
byte[SendDataList.Count]; for
(int
j = 0; j < SendBytes.Length; j++) { SendBytes[j] = (byte)(Convert.ToInt32(SendDataList[j], 16)); } } ComDevice.Write(SendBytes, 0, SendBytes.Length);//发送数据 } else { XtraMessageBox.Show("请打开串口！", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error); } } } #region 接收数据 private
void
ComDevice_DataReceived(object
sender, SerialDataReceivedEventArgs e) { UpdateRecevie(ComDevice.ReadExisting()); } public
delegate
void
UpdateString(object
NewData); public
void
UpdateRecevie(object
NewData) { if
(this.InvokeRequired)//等待异步 { UpdateString _myInvoke = new
UpdateString(UpdateRecevie); this.Invoke(_myInvoke, new
object[] { NewData }); } else { txtComReceive.AppendText(NewData.ToString()); txtComReceive.SelectionStart = txtComReceive.Text.Length - 1; txtComReceive.ScrollToCaret(); } } #endregion |
原文：http://www.cnblogs.com/Ares-blog/p/3522356.html