无法使用C＃创建Activex对象

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.

Answer 1

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.

Answer 2

感谢您的所有答复... GetObject方法正在创建一个未注册其activex组件的对象...我通过找到相应的* .ocx文件并在该文件上调用Regsvr32来解决了此问题...