System.IO.Ports.SerialPort not loading

Hi,

im trying to open com2 . whene i clicked on Button Open_com2 the com 2 must be open but i have some problem like the following
1- Type 'IO.Ports.SerialPort' is not defined.
2-'Ports' is not a member of 'IO'.


Can anyone tell me how can I solve this? :confused:
please help me :confused: :confused: i got headache :eek2: :eek2:

this all my code i use Visual Studio 2003

VB Code:

Public Class Form1
    Inherits System.Windows.Forms.Form
 
#Region " Windows Form Designer generated code "
 
    Public Sub New()
        MyBase.New()
 
        'This call is required by the Windows Form Designer.
        InitializeComponent()
 
        'Add any initialization after the InitializeComponent() call
 
    End Sub
 
    'Form overrides dispose to clean up the component list.
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            If Not (components Is Nothing) Then
                components.Dispose()
            End If
        End If
        MyBase.Dispose(disposing)
    End Sub
 
    'Required by the Windows Form Designer
    Private components As System.ComponentModel.IContainer
 
    'NOTE: The following procedure is required by the Windows Form Designer
    'It can be modified using the Windows Form Designer.  
    'Do not modify it using the code editor.
    Friend WithEvents open_com2 As System.Windows.Forms.Button
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.open_com2 = New System.Windows.Forms.Button
        Me.SuspendLayout()
        '
        'open_com2
        '
        Me.open_com2.Location = New System.Drawing.Point(56, 88)
        Me.open_com2.Name = "open_com2"
        Me.open_com2.Size = New System.Drawing.Size(184, 64)
        Me.open_com2.TabIndex = 0
        Me.open_com2.Text = "Open Com2"
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(292, 266)
        Me.Controls.Add(Me.open_com2)
        Me.Name = "Form1"
        Me.Text = "Form1"
        Me.ResumeLayout(False)
 
    End Sub
 
#End Region
 
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles open_com2.Click
 
 
        'usually, you would declare the serial port at form level and initialize
        'it in the constructor so you can get responses from the port
 
        'declare the serial port and set it for 4800,N,8,1
        Dim serial As New IO.Ports.SerialPort("COM2")
        serial.BaudRate = 4800
        serial.Parity = IO.Ports.Parity.None
        serial.DataBits = 8
        serial.StopBits = IO.Ports.StopBits.One
 
         'make sure the port is open
        Try
            If Not serial.IsOpen Then serial.Open()
        Catch ex As Exception
            'specifically an UnauthorizedAccessException
            'the port is already open somewhere else
            MessageBox.Show("The port is already opened by another process.")
            Exit Sub
        End Try
 
       '
        'uncomment the next line if you do not need to get responses
        'and you are done with the port
        'serial.Close() 
 
    End Sub
End Class
'

I'm not seeing the System namespace in your declaration.

Dim serial As New IO.Ports.SerialPort("COM2")

should be

Dim serial As New System.IO.Ports.SerialPort("COM2")

Also you could just import the System namespace at the very top of your codewindow and you won't have to type it each time

Imports System

sorry , not workd. new message :confused:
'System.IO.Ports.SerialPort' is not defined.

so when you use

Dim serial As New System.IO.Ports.SerialPort("COM2")

its still telling you its not defined? :ehh:

show me your code again for your button click

Public Class Form1
Inherits System.Windows.Forms.Form
Friend WithEvents open_com2 As System.Windows.Forms.Button

#Region " Windows Form Designer generated code "

Public Sub New()

MyBase.New()

'This call is required by the Windows Form Designer.
InitializeComponent()

'Add any initialization after the InitializeComponent() call

End Sub

'Form overrides dispose to clean up the component list.
Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
MyBase.Dispose(disposing)
End Sub

'NOTE: The following procedure is required by the Windows Form Designer
'It can be modified using the Windows Form Designer.
'Do not modify it using the code editor.
Private Sub InitializeComponent()
Me.open_com2 = New System.Windows.Forms.Button
'
'open_com2
'
Me.open_com2.Location = New System.Drawing.Point(240, 112)
Me.open_com2.Size = New System.Drawing.Size(176, 72)
Me.open_com2.Text = "open com2"
'
'Form1
'
Me.Controls.Add(Me.open_com2)
Me.Text = "Form1"

End Sub

Public Shared Sub Main()
Application.Run(New Form1())
End Sub

#End Region

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles open_com2.Click
'usually, you would declare the serial port at form level and initialize
'it in the constructor so you can get responses from the port

'declare the serial port and set it for 4800,N,8,1
Dim serial As New System.IO.Ports.SerialPort("COM2")
serial.BaudRate = 4800
serial.Parity = System.IO.Ports.Parity.None
serial.DataBits = 8
serial.StopBits = IO.Ports.StopBits.One

'make sure the port is open
Try
If Not serial.IsOpen Then serial.Open()
Catch ex As Exception
'specifically an UnauthorizedAccessException
'the port is already open somewhere else
MessageBox.Show("The port is already opened by another process.")
Exit Sub
End Try

'
'uncomment the next line if you do not need to get responses
'and you are done with the port
'serial.Close()

End Sub



End Class

may be the prblem in Ports.SerialPort not worked with Visual Studio 2003?!

Click REBUILD.

Strange, but I'm not having any problems with that code you just posted :ehh:

I'm on 2005, but that shouldn't make a difference with this code

Quote:

---

Originally Posted by vbnm

may be the prblem in Ports.SerialPort not worked with Visual Studio 2003?!

---

You may be right, try to follow the intellisense is all i can say. I don't have a 2003 install available right now to test with.

I think that namespace is 2005 only.

Try System.IO.Serial

how can i open com2 by clicked on Button Open_com2 in Visual Studio 2003,please?!

system.io.ports namespace is not part of VS2003.
support for serial ports was bought back in VS2005

oky please learn me how can i communicate whit Rs232 ???!! i will use windows ce and smart drive

VB Code:

Imports System.IO.Ports
Public Class Form1
      Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        
Dim SP As SerialPort = New SerialPort(ComboBox1.Text.ToString, ComboBox2.Text, Parity.None)
        Try
            SP.DataBits = TextBox9.Text
 
            Select Case ComboBox4.Text
                Case "0"
                    SP.StopBits = StopBits.None
                Case "1"
                    SP.StopBits = StopBits.One
                Case "1,5"
                    SP.StopBits = StopBits.OnePointFive
                Case "2"
                    SP.StopBits = StopBits.Two
            End Select
 
            SP.Open()
        Catch ex As Exception
            MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error)
            Exit Sub
        End Try
 
        'startcode
        SP.Write(TextBox1.Text)
        SP.Close()

combobox1 = {"COM1","COM2"}
combobox2 = {600,1200,2400,4800,9600,14400,...whatever}
textbox9 = between 5 and 8


Works fine