Raising COM Events in C# Class Library

sreecareer · September 21st, 2008, 08:50 PM

Hi,
I am trying to use an ActiveX Control in a C# class library project. The ActiveX is an open source project that I found from net. I want to use this in a web application, but I don't want to expose any code. So I am trying to create a class library. I am raising the events as follows..

Code:

private CtConectorXClass ctiConnecter = new CtConectorXClass(); 
 
        public CTIOperations() 
        { 
            ctiConnecter.OnACSOpenStreamConf += new ICtConectorXEvents_OnACSOpenStreamConfEventHandler(objCTI_OnACSOpenStreamConf); 
            ctiConnecter.OnACSCloseStreamConf += new ICtConectorXEvents_OnACSCloseStreamConfEventHandler(objCTI_OnACSCloseStreamConf); 
        } 
 
        private void objCTI_OnACSOpenStreamConf(int invokeId, string apiVersion, string libVersion, string tsrvVersion, string drvVersion) 
        { 
            //Code 
        } 
 
        private void objCTI_OnACSCloseStreamConf(int invokeId) 
        { 
            //Code 
        } 
 
        public bool OpenStream() 
        { 
                int retCode = ctiConnecter.OpenStream(/*arguments*/); 
 
                if (retCode < 0) 
                    return false; 
                else 
                    return true; 
        } 
 
        public bool CloseStream() 
        { 
                int retCode = ctiConnecter.CloseStream(); 
 
                if (retCode < 0) 
                    return false; 
                else 
                    return true; 
        }

When I call the class library methods, from a ASP.Net application, the events are not getting raised.

When I referenced the OCX to a windows application, the events are getting raised

And if I refer the OCX directly in a web application, the events are getting raised. In the DLL, it is giving a COM Exception. The methods returns success values but in the Constructor, when the new delegate is created, its throwing a COM Exception.

Code:

Exception from HRESULT: 0x80040202 
System.Runtime.InteropServices.COMException (0x80040202): Exception from HRESULT: 0x80040202 
   at System.Runtime.InteropServices.ComTypes.IConnectionPoint.Advise(Object pUnkSink, Int32& pdwCookie) 
   at CtConectorXControl.ICtConectorXEvents_EventProvider.add_OnACSOpenStreamConf(ICtConectorXEvents_OnACSOpenStreamConfEventHandler ) 
   at CtConectorXControl.CtConectorXClass.add_OnACSOpenStreamConf(ICtConectorXEvents_OnACSOpenStreamConfEventHandler )

Only in the DLL, I cannot raise the events. Can anybody tell whether I am doing any mistake or the OCX may have some problems. Any help is highly appreciated..

Thanks
Sree