Databases
StackOverflow2013
Postsdbo
POSerialport writeline textbox error
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POSerialport writeline textbox error
    primarykey
    data
    text
    <p>I use virtual COM ports for testing my program. I want to Serial Write with COM8 and Serial read with COM9. When a want to write the values from textbox1, i get this error:</p> <pre><code>IOException was unhandled (The parameter is incorrect) </code></pre> <p>How do i get rid of this?</p> <pre><code>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(); } } } } </code></pre>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USTrott
    1. USOsman Esen
    plurals
    1. This table or related slice is empty.
    1. PL
      singulars
      1. LTLinked
    2. PL
      singulars
      1. LTDuplicate
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POSerialport writeline textbox error
      1. This table or related slice is empty.
      1. VTClose
    2. VO
      singulars
      1. POSerialport writeline textbox error
      1. This table or related slice is empty.
      1. VTClose
    1. COWhat is the Message of the unhandled IOException?
      singulars
      1. POSerialport writeline textbox error
      1. USDai
    2. COThe driver is unhappy about something. Not setting any of the serial communication settings, like baudrate and databits, etc. Maybe.
      singulars
      1. POSerialport writeline textbox error
      1. USHans Passant
    3. COThe message of the unhandled error is: The parameter is incorrect
      singulars
      1. POSerialport writeline textbox error
      1. USOsman Esen
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload