CODEWITHSUNDEEP
c#activex
Bob Ezuba
Bob Ezuba

Reputation: 510

can not create activex object using C#

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.

Upvotes: 0

Views: 1298

Answers (2)

Bob Ezuba
Bob Ezuba

Reputation: 510

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...

Upvotes: 0

David Heffernan
David Heffernan

Reputation: 612784

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.

Upvotes: 4

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