Serialport writeline文本框错误
我使用虚拟COM端口来测试我的程序。 我想用COM8进行串行写入，用COM9进行串行读取。 当想要从textbox1写入值时，我收到此错误：
IOException was unhandled (The parameter is incorrect) 我怎么摆脱这个？
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(); } } } }
两个端口之间没有任何桥接导致问题。 虚拟COM端口软件欺骗了我！