can not create activex object using C#

Question

I am deploying a C# application on client machine. The Application need to access code from another program, so it can scrap text from the screen of another application. It is running fine on the development machine but on the client machine it is throwing an error "ActiveX Component cannot create Object" this is where i am getting the error from!

    private ExtraSession objExtraSession;
    private ExtraSessions objExtraSessions;
    private ExtraScreen objExtraScreen;
    private ExtraArea objExtraArea;
    private ExtraSystem objExtraSystem;
    protected void sessionInitializer()
    {
        try
        {
            objExtraSystem = (ExtraSystem) Microsoft.VisualBasic.Interaction.CreateObject("Extra.system");

            if (objExtraSystem == null)
            {
                MessageBox.Show("Could not create system");
                return;
            }
            objExtraSessions = objExtraSystem.Sessions;

            if (objExtraSessions == null)
            {
                MessageBox.Show("Could not create sessions");
                return;
            }
            if (!System.IO.File.Exists("C:\\Users\\" + userid + "\\Documents\\Attachmate\\EXTRA!\\Sessions\\SAS.edp"))
            {
                MessageBox.Show("File does not exist");
                return;
            }

            objExtraSession = (ExtraSession) Microsoft.VisualBasic.Interaction.GetObject("C:\\Users\\"+ userid + "\\Documents\\Attachmate\\EXTRA!\\Sessions\\SAS.edp");

            if (objExtraSession == null)
            {
                MessageBox.Show("Could not create session");
                return;
            }

            if (objExtraSession.Visible == 0)
            {
                objExtraSession.Visible = 1;
            }

            objExtraScreen = objExtraSession.Screen;
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.StackTrace, "Failed to initialize Attachmate sessions");
        }
    }

The error is generated from objExtraSession = (ExtraSession) Microsoft.VisualBasic.Interaction.GetObject("C:\Users\"+ userid + "\Documents\Attachmate\EXTRA!\Sessions\SAS.edp");

Am I missing some step. Please help me out. Thanks in advance.

Am using windows 7 on the development computer as well as on client's computer — Bob Ezuba
– Bob Ezuba, Commented Dec 9, 2013 at 23:29

David Heffernan · Accepted Answer · 2013-12-09 20:13:12Z

4

The most likely explanation is that your development machine has the ActiveX control installed, but the client machine does not. Read the deployment documentation for the control and do what is says is required to deploy to the client machine.

answered Dec 9, 2013 at 20:13

David Heffernan

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Bob Ezuba · Accepted Answer · 2013-12-17 03:41:14Z

0

Thanks for all your responses... The method GetObject was creating an object whose activex component was not registered... I resolved by finding the corresponding *.ocx file and calling Regsvr32 on the file this resolved the problem...

answered Dec 17, 2013 at 3:41

Bob Ezuba

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1 Comment

Esraa_92 Over a year ago

can you exaplain with more detail how you solve your problem?

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