EPSON OPOS/MS POS and .NET 4.0 CONVERSION

Question

Hi!

I am trying to take the examples from the Epson SDK which was written in .NET 2.0 and convert them to use with 4.0.  Here is the code I have from the examples.. I am getting an error though when trying to use it.  Any ideas?Private Sub Form2_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load

Private m_Printer As Microsoft.PointOfService.PosPrinter

        '<<<step1>>>--Start
        'Use a Logical Device Name which has been set on the SetupPOS.
        Dim strLogicalName As String
        Dim deviceInfo As DeviceInfo
        Dim posExplorer As PosExplorer

        strLogicalName = "PosPrinter"

        'Create PosExplorer
        posExplorer = New PosExplorer

        m_Printer = Nothing

        Try

            deviceInfo = posExplorer.GetDevice(DeviceType.PosPrinter, strLogicalName)

            Label1.Text = deviceInfo.ToString
            m_Printer = posExplorer.CreateInstance(deviceInfo)

        Catch ex As Exception
            'ChangeButtonStatus()
            Return
        End Try

        Try

            'Open the device
            m_Printer.Open()

            'Get the exclusive control right for the opened device.
            'Then the device is disable from other application.
            m_Printer.Claim(1000)

            'Enable the device.
            m_Printer.DeviceEnabled = True

        Catch ex As PosControlException

            'ChangeButtonStatus()

        End Try
        '<<<step1>>>--End

    End Sub

Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click

        '<<<step1>>> Start
        Try
            'As using the PrintNormal method, send strings to a printer, and print it
            '[vbCrLf] is the standard code for starting a new line.
            m_Printer.PrintNormal(PrinterStation.Receipt, "Hello OPOS for .Net")  <--- the error is in this line

        Catch ex As PosControlException

        End Try
        '<<<step2>>> End

    End Sub

Answer 1

If you are trying to use POS for .NET, .NET 2.0 is still needed.

-Sean

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www.sjjmicro.com / www.seanliming.com / www.annabooks.com, Book Author - Pro Guide to WES 7, XP Embedded Advanced, Pro Guide to POS for .NET