本方法，禁用跨进程错误（做法不太好，但是对于单片机出身的人来说，好理解，能用就行）。
基本功能：
1.点串口号的下拉菜单自动当前检索设备管理器的COM
2.发送模式可选，hex和string两种
3.接收显示模式，hex和string两种
4.发送多行数据
5.发送单行，可增加自动换行（方便用于一些串口指令，很多指令都带回车，每次写回车太麻烦）
效果演示：
主代码参考：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO.Ports;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace SerialTools
{
public partial class Form1 : Form
{
private long RxCount = 0;
public Form1()
{
InitializeComponent();
System.Windows.Forms.Control.CheckForIllegalCrossThreadCalls = false;
}
#region 初始化Form
private void Form1_Load(object sender, EventArgs e)
{
pictureBox1.Image = Properties.Resources.off;
////查询当前有用的串口号
//SerialPort.GetPortNames();
//string[] ports = SerialPort.GetPortNames();
//foreach (string port in ports)
//{
// cb_com.Items.Add(port);
//}
serialPort1.BaudRate = 9600;
serialPort1.DataBits = 8;
serialPort1.StopBits = (StopBits)1;
//迭代所有的波特率
string[] tab_Baud = new string[] { "110", "300", "600", "1200", "2400", "4800", "9600", "14400", "19200", "38400", "56000", "57600", "115200", "128000", "256000" };
foreach (string str in tab_Baud)
{
cb_Baud.Items.Add(str);
}
//迭代所有的数据位
string[] tab_data = new string[] { "5", "6", "7", "8" };
foreach (string str in tab_data)
{
cb_DataBits.Items.Add(str);
}
//迭代所有的停止位
string[] tab_stop = new string[] { "1", "2" };
foreach (string str in tab_stop)
{
cb_StopBits.Items.Add(str);
}
cb_Baud.Text = "9600";
cb_DataBits.Text = "8";
cb_StopBits.Text = "1";
serialPort1.DataReceived += new SerialDataReceivedEventHandler(port_DataReceived);//添加事件
}
#endregion
#region 接收数据
private void port_DataReceived(object sender,SerialDataReceivedEventArgs e) {
if (!checkBox_receiveMode.Checked)//没有勾选hex时候，按照字符串方式读取
{
string str = serialPort1.ReadExisting();//字符串方式读
textBox_receive.AppendText(str); //添加内容
RxCount += str.Length;
}
else {
byte data;
data = (byte)serialPort1.ReadByte();
string str = Convert.ToString(data, 16).ToUpper();
textBox_receive.AppendText((str.Length == 1 ? "0" + str : str)+" ");//空位补"0"
RxCount += str.Length;
}
label_ReceiveCount.Text = RxCount.ToString();
}
#endregion
#region 清空接收计数器和接收显示区域
private void button4_Click(object sender, EventArgs e)
{
textBox_receive.Text = "";
RxCount = 0;
label_ReceiveCount.Text = RxCount.ToString();
}
#endregion
#region 打开/关闭串口
private void button1_Click(object sender, EventArgs e)
{
if (!serialPort1.IsOpen)
{
try
{
serialPort1.PortName = cb_com.Text;
serialPort1.BaudRate = Convert.ToInt32(cb_Baud.Text);
serialPort1.DataBits = Convert.ToInt32(cb_DataBits.Text);
serialPort1.StopBits = (StopBits)Convert.ToInt32(cb_StopBits.Text);
serialPort1.Open();
}
catch
{
MessageBox.Show("端口打开失败", "错误");
}
}
else {
try
{
serialPort1.Close();
}
catch
{
MessageBox.Show("端口关闭失败", "错误");
}
}
changeButtonTextAndPicture();
}
#endregion
#region 根据串口状态切换按键名称和指示灯图片
private void changeButtonTextAndPicture()
{
if (serialPort1.IsOpen)
{
pictureBox1.Image = Properties.Resources.on;
button1.Text = "关闭串口";
}
else
{
pictureBox1.Image = Properties.Resources.off;
button1.Text = "打开串口";
}
}
#endregion
#region 多行发送
private void button2_Click(object sender, EventArgs e)
{
byte[] Data = new byte[1];
if (serialPort1.IsOpen)
{
if(textBox_send1.Text != "")
{
if(!checkBox_sendMode.Checked)//发送模式是字符模式
{
try
{
serialPort1.Write(textBox_send1.Text);
}
catch
{
MessageBox.Show("端口发送失败，系统将关闭当前串口", "错误");
serialPort1.Close();//关闭串口
}
}
else
{
if(textBox_send1.Text.Length%2 == 0)//偶数个数字
{
for(int i = 0; i < textBox_send1.Text.Length / 2; i++)
{
try
{
Data[0] = Convert.ToByte(textBox_send1.Text.Substring(i * 2, 2), 16);
}
catch
{
MessageBox.Show("请核对输入的十六进制数据格式", "错误");
}
try
{
serialPort1.Write(Data, 0, 1);
}
catch
{
MessageBox.Show("端口发送失败，系统将关闭当前串口", "错误");
serialPort1.Close();//关闭串口
}
}
}
else
{
MessageBox.Show("请输入偶数个16进制数字", "错误");
}
}
}
}
}
#endregion
#region 单行发送
private void button3_Click(object sender, EventArgs e)
{
byte[] Data = new byte[1];
if (serialPort1.IsOpen)
{
if (textBox_send2.Text != "")
{
if (!checkBox_sendMode.Checked)//发送模式是字符模式
{
try
{
serialPort1.Write(textBox_send2.Text);
if (checkBox_newLine.Checked)
serialPort1.Write("\r\n");
}
catch
{
MessageBox.Show("端口发送失败，系统将关闭当前串口", "错误");
serialPort1.Close();//关闭串口
}
}
else
{
if (textBox_send2.Text.Length % 2 == 0)//偶数个数字
{
for (int i = 0; i < textBox_send2.Text.Length / 2; i++)
{
try
{
Data[0] = Convert.ToByte(textBox_send2.Text.Substring(i * 2, 2), 16);
}
catch
{
MessageBox.Show("请核对输入的十六进制数据格式", "错误");
}
try
{
serialPort1.Write(Data, 0, 1);
if (checkBox_newLine.Checked)
serialPort1.Write("\r\n");
}
catch
{
MessageBox.Show("端口发送失败，系统将关闭当前串口", "错误");
serialPort1.Close();//关闭串口
}
}
}
else
{
MessageBox.Show("请输入偶数个16进制数字", "错误");
}
}
}
}
}
#endregion
#region 切换选项时候修改串口属性
private void cb_com_SelectedIndexChanged(object sender, EventArgs e)
{
try
{
if (serialPort1.IsOpen)
{
serialPort1.Close();
serialPort1.PortName = cb_com.Text;
serialPort1.Open();
}
else
{
serialPort1.PortName = cb_com.Text;
}
}
catch (System.Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
changeButtonTextAndPicture();
}
}
private void cb_Baud_SelectedIndexChanged(object sender, EventArgs e)
{
serialPort1.BaudRate = int.Parse(cb_Baud.Text);
}
private void cb_DataBits_SelectedIndexChanged(object sender, EventArgs e)
{
serialPort1.DataBits = int.Parse(cb_DataBits.Text);
}
private void cb_StopBits_SelectedIndexChanged(object sender, EventArgs e)
{
serialPort1.StopBits = (StopBits)int.Parse(cb_StopBits.Text);
}
#endregion
#region com的下拉菜单展开时候自动搜索当前设备管理器
private void cb_com_DropDown(object sender, EventArgs e)
{
cb_com.Items.Clear(); //清空
//查询当前有用的串口号
SerialPort.GetPortNames();
string[] ports = SerialPort.GetPortNames();
foreach (string port in ports)
{
cb_com.Items.Add(port);
}
}
#endregion
}
}
工程源码下载（使用VS2015编译）：
http://yunpan.cn/cHLTVtXLL6UYs 访问密码 bf4e
时间： 2024-08-08 01:28:26