May i ask how can i solve this error message (System.Windows.Forms.TextBox, Text:) i have try many way to solve but still not success to solve the problem.

Question

I face the issue is after i scan my barcoede i will get this error message on my textbox1 can someone pls tell me how can i solve.

is i missing something.

Public Class Form1
    Private dataIn As String

 Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

        SerialPort.PortName = "COM1"
        SerialPort.BaudRate = CInt("9600")
        SerialPort.Parity = Parity.None
        SerialPort.StopBits = StopBits.One
        SerialPort.Handshake = Handshake.None
        SerialPort.Open()
        SerialPort.ReadTimeout = 200

        If SerialPort.IsOpen Then
            TextBox1.Text = ""
        End If
    End Sub

 Private Sub SerialPort_DataReceived(ByVal sender As System.Object, ByVal e As System.IO.Ports.SerialDataReceivedEventArgs) Handles SerialPort.DataReceived
        dataIn = SerialPort.ReadExisting
        TextBox1.Text += SerialPort.ReadExisting().ToString()
        SetText(TextBox1.ToString())

    End Sub
    Delegate Sub SetTextCallback(ByVal text As String)

    Private Sub SetText(ByVal text As String)
        If Me.TextBox1.InvokeRequired Then
            Dim d As SetTextCallback = New SetTextCallback(AddressOf SetText)
            Me.Invoke(d, New Object() {text})
        Else
            Me.TextBox1.Text = text.ToString


        End If
    End Sub

 

Answer 1

Hi christing,

>> SetText(TextBox1.ToString())

The parameter of method SetText should be TextBox1.Text, and the TextBox1.ToString() shows the class name which cause the issue you described.

So you shoulde modify SetText(TextBox1.ToString()) to SetText(TextBox1.Text).

Best Regards,

Daniel Zhang

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Answer 2

@Daniel_Zhang-MSFT

Thank you replay message for me. 

After i change  SetText(TextBox1.ToString()) to SetText(TextBox1.Text). after i scan barcode i no success get the barcode information to my textbox. is i doing wrong or missing something. can you teaching me thanks. 

 

Answer 3

Maybe try this too:

Private Sub SerialPort_DataReceived(ByVal sender As System.Object, ByVal e As System.IO.Ports.SerialDataReceivedEventArgs) Handles SerialPort.DataReceived

   dataIn = SerialPort.ReadExisting

   SetText( dataIn)

End Sub

 

Answer 4

@Viorel

Thanks for your message i success get the data already. :)

really thanks a lot

Answer 5

For problem services/utilities go to control-panel/administrator tools/event viewer/system/expand the tree/locate the time-date of the event/warning/properties/see what the OS says.For detailed help,go to Microsoft/TechNet errors.

https://technet.microsoft.com/en-us/ms772425.aspx

use the search settings & enter properties....