仅作自己学习使用

---

1 准备部份

需要两个调试软件commix和Virtual Serial Port Driver，分别用于监视串口和创造虚拟串口。

第一个软件是这样的：

资源在这里：免费下载：Commix
也可以前往官网下载：Bwsensing— Attitude is everything

点击Download即可

---

第二个软件是这样的：

官方下载链接：Virtual Serial Port Driver

2 Xaml代码

界面做得很丑，能用就行，关键是原理：

<Window x:Class="WPF_ZhaoXi_0205.MainWindow"xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"xmlns:d="http://schemas.microsoft.com/expression/blend/2008"xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"xmlns:local="clr-namespace:WPF_ZhaoXi_0205"mc:Ignorable="d"Title="MainWindow" Height="450" Width="800"><Grid><Grid.RowDefinitions><RowDefinition/><RowDefinition/><RowDefinition/></Grid.RowDefinitions><Grid.ColumnDefinitions><ColumnDefinition/><ColumnDefinition/></Grid.ColumnDefinitions><TextBox x:Name="textBox_receive" Grid.Row="0" Grid.Column="0" FontSize="15" Margin="10" Text="接收窗口"/><TextBox x:Name="textBox_send" Grid.Row="0" Grid.Column="1" FontSize="15" Margin="10" Text="发送窗口"/><Button x:Name="button_open" Grid.Row="1" Grid.Column="0" Content="打开串口" Margin="10" Click="button_open_Click"/><Button x:Name="button_recisive" Grid.Row="1" Grid.Column="1" Content="接收数据" Margin="10" Click="button_recisive_Click"/><Button x:Name="button_send" Grid.Row="2" Grid.Column="0" Content="发送数据" Margin="10" Click="button_send_Click"/></Grid>
</Window>

3 cs代码

using System.IO.Ports;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;namespace WPF_ZhaoXi_0205
{/// <summary>/// Interaction logic for MainWindow.xaml/// </summary>public partial class MainWindow : Window{// 声明一个串口对象SerialPort sp = null;public MainWindow(){InitializeComponent();// 实例化串口对象//sp = new SerialPort("COM1", 9600, Parity.None, 8, StopBits.One);sp = new SerialPort();// 设置通讯的属性sp.PortName = "COM2";       // 串口名称sp.BaudRate = 9600;         // 波特率sp.Parity = Parity.None;    // 校验位sp.DataBits = 8;            // 数据位  sp.StopBits = StopBits.One; // 停止位 // 第二种接收数据的方式，被动接收，如称重，扫码枪等 sp.DataReceived += Sp_DataReceived;}/// <summary>/// 第二种数据接收的方式/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void Sp_DataReceived(object sender, SerialDataReceivedEventArgs e){byte[] bt1 = new byte[sp.BytesToRead];sp.Read(bt1, 0, bt1.Length);// 这里在异步线程处理了UI控件，而UI控件必须在主线程处理，因此要报错//textBox_recsive.Text = Encoding.ASCII.GetString(bt1);// 因此把这个语句放在UI线程（主线程进行）this.Dispatcher.Invoke(() =>{ textBox_receive.Text = Encoding.ASCII.GetString(bt1); });}/// <summary>/// 打开串口/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void button_open_Click(object sender, RoutedEventArgs e){// 打开动作try{// 串口的一端只能同时被一个用户打开，否则报错，所以看是否串口已经被占用sp.Open();MessageBox.Show(sp.PortName+"串口已打开", "提示");}catch (Exception ex){MessageBox.Show(ex.Message,"提示");}}/// <summary>/// 发送数据/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void button_send_Click(object sender, RoutedEventArgs e){// 发送动作(与打开动作操作同一个串口对象)// sp.Write();string str_send = textBox_send.Text;byte[] bt1 = Encoding.ASCII.GetBytes(str_send);byte[] bt2 = new byte[] { 0x01, 0x02, 0x03 };sp.Write(bt1, 0, bt1.Length);  // 在bytes中从位置0开始发送bytes.Length个字节}/// <summary>/// 接收数据（第一种接收方式，主动请求接收方式）/// 我要你再给/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void button_recisive_Click(object sender, RoutedEventArgs e){// 长度是串口能够读到的最大的字节数量byte[] bt1 = new byte[sp.BytesToRead];sp.Read(bt1, 0, bt1.Length); // 从当前串口中的位置0处开始读取bt1.Length个字节到bt1中textBox_receive.Text = Encoding.ASCII.GetString(bt1);}}
}