我使用虚拟 COM 端口来测试我的程序。我想用 COM8 串行写入和用 COM9 串行读取。当想要从 textbox1 写入值时，我收到此错误：
IOException was unhandled (The parameter is incorrect)
我该如何摆脱这个？
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO.Ports;
namespace Flowerpod_User_Interface
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
// show list of valid COM ports
foreach (string s in System.IO.Ports.SerialPort.GetPortNames())
{
comboBox1.Items.Add(s);
}
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
if (serialPort1.IsOpen)
{
serialPort1.WriteLine(textBox1.Text);
}
else
{
MessageBox.Show("SerialPort1 is not open");
}
}
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
}
private void Connect_Click(object sender, EventArgs e)
{
if (!serialPort1.IsOpen)
{
serialPort1.PortName = comboBox1.SelectedItem.ToString();
serialPort1.Open();
textBox3.Text = "Open";
}
}
private void textBox3_TextChanged(object sender, EventArgs e)
{
}
private void textBox2_TextChanged(object sender, EventArgs e)
{
}
private void button3_Click(object sender, EventArgs e)
{
Random slumpGenerator = new Random();
// Or whatever limits you want... Next() returns a double
int tal = slumpGenerator.Next(1000, 10000);
textBox1.Text = tal.ToString();
}
private void textBox4_TextChanged(object sender, EventArgs e)
{
}
private void serialPort1_DataReceived(object sender,SerialDataReceivedEventArgs e)
{
}
private void button4_Click(object sender, EventArgs e)
{
if (!serialPortRead.IsOpen)
{
serialPort1.PortName = "COM9";
serialPortRead.Open();
textBox4.Text = serialPortRead.ReadLine();
}
}
}
}