Register COM interop

Question

Hello to All,

This is my very first time building an application which requires registering COM interop. The output of this application should be a library so as to load it into a different XYZ application that has COM scripting ability.The problem I am facing is the application I built works fine on my machine that has Visual Studio 2012(checking Register COM interop) But when I try it on a different machine, it wont properly in the XYZ application.After a lot of research and trying installShield installer , I have concluded that maybe I am missing something in my code.I was under the impression, that just declaring COMvisible to true and GUID attribute is enough.But I am surely missing something about the interface.I will really appreciate is someone can help me with a step by step tutorial for the same.

Below is what I am doing currently.

1) create a class library project and add the following code:

 

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Runtime.InteropServices;

using Ivi.Visa.Interop;

namespace UsbLibraryCls

{

[Guid("0FB610DE-C81E-491E-BCC5-D897CDFA7CFD")]

[ComVisible(true)]

[ClassInterface(ClassInterfaceType.AutoDual)]

public class ComUsb

{

ResourceManager rMgr = new ResourceManager();

FormattedIO488 src = new FormattedIO488();

object resources = null;

public string OutputResources()

{

resources = rMgr.FindRsrc("USB[0-9]*::?*");

string[] resource_list = (string[])resources;

string allResources = String.Join(";", resource_list);

return allResources;

}

} 

 

Here I add the VISA COM 3.0 library as a reference.

 

2) Create a console application:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Runtime.InteropServices;

using UsbLibraryCls;

namespace UsbLibConsole

{

class Program

{

static void Main(string[] args)

{

ComUsb Usb = new ComUsb();

Usb.OutputResources();

}

}

}

 

3) Both the projects are have x86 platform. And I check mark for "Register COM interop"

 

4) The library loads into the registery and I load this into the XYZ library by calling its ProgID.

And it works fine.

 

But When I try this on a any other target machine without VS with the same configurations as my laptop that has VS, the library loads into the registery but when i load it into the XYZ application it does not work.

I load it on the target machine by using RegAsm "fullpath\abc.dll" /tlb: abc.tlb /codebase.

 

I can say I have almost tried all the solutions I could find online. But I am missing some important detail.

All I want is when I call the OutputResources() function from the XYZ application. It should return a string with all the USB devices connected to the machine.

The code is barely 10 lines but I have spent more than a week trying this.

 

I am waiting on delivery of Install Sheild so have not tried that yet. But I created  the .msi package

  using advanced installer and installed it on target machine and still wont work. 

 

I really would appreciate if anyone could point out where I am going wrong.

Thanks!