1、using如下
using System;
using System.Text;
using System.Windows.Forms;
using System.Collections;
using System.IO.Ports;
using System.IO;
2、页面打开时，自动识别连接串口设计
private void dataTrans_Load(object sender, EventArgs e)
{
string[] portList = SerialPort.GetPortNames();
comboBox_serialNo.Items.Clear();
for (int i = 0; i < portList.Length; i++)
{
string name = portList[i];
comboBox_serialNo.Items.Add(name);
}
mySerialPort.DataReceived += new SerialDataReceivedEventHandler(DataReceive_Method);// new SerialDataReceivedEvenHandler(DataReceive_Method);
}
3、定义串口接收订阅事件实现方法
private void DataReceive_Method(object sender, SerialDataReceivedEventArgs e)
{
//serialReadString = mySerialPort.ReadExisting();
byte [] tempdata=new byte[mySerialPort.ReadBufferSize];
// Console.WriteLine(“read size:{0}”,mySerialPort.BytesToRead);
int templen = mySerialPort.BytesToRead;//至少缓存4个字节数据，用于区分是否是wav文件
if (templen > mySerialPort.ReadBufferSize) templen = mySerialPort.ReadBufferSize;
mySerialPort.Read(tempdata, 0, templen);
if (!istart) return;//未发送串口命令，不接收任何指令
for (int i = 0; i < templen; i++) {
queuelist.Enqueue(tempdata[i]);
}
while(queuelist.Count>0)
{
updateText();
}
}
4、串口打开方法
private void button_open_Click(object sender, EventArgs e)
{
try
{
string strSerialNo = comboBox_serialNo.Text.Trim();
if (strSerialNo != “”)
{
int iRaudRate = 0;
int iDataBits = 0;
mySerialPort.PortName = strSerialNo;
int.TryParse(comboBox_bandRate.Text.Trim(), out iRaudRate);//波特率
int.TryParse(comboBox_DataBit.Text.Trim(), out iDataBits);//波特率
mySerialPort.BaudRate = iRaudRate;
mySerialPort.Parity = Parity.None;//校验位
mySerialPort.StopBits = StopBits.One;// StopBits.One;//停止位
mySerialPort.DataBits = iDataBits;//数据位
mySerialPort.Handshake = Handshake.None;
mySerialPort.ReadTimeout = 1500;
mySerialPort.DtrEnable = true;//启用数据终端就绪信息
mySerialPort.Encoding = Encoding.UTF8;
mySerialPort.ReceivedBytesThreshold = 1;
mySerialPort.Open();
}
}
catch
{
MessageBox.Show(“串口打开失败！”);
}
}
5、串口关闭方法
private void button_stop_Click(object sender, EventArgs e)
{
mySerialPort.Close();
}
6、串口发送方法实现
private void button_Send_Click(object sender, EventArgs e)
{
string str = richTextBox_send.Text.Trim();
byte[] data = new byte[6];
string strtemp = “”;
try
{
for (int i = 0; i < str.Length; i++)
{
strtemp = str.Substring(i, 2);
data[i/2] = Convert.ToByte(strtemp, 16);
i++;
}
}
catch
{
MessageBox.Show(“请核对输入的十六进制数据格式错误”);
return;
}
if (mySerialPort.IsOpen)
{
{
try
{
mySerialPort.Write(data, 0, 6);
istart = true;
}
catch
{
MessageBox.Show(“端口发送失败，系统将关闭当前串口错误”);
mySerialPort.Close();
istart = false;
}
}
}
}