How to debug a VB6 class from within a .Net 2003 project

Posted on 2011-02-21
Medium Priority
Last Modified: 2012-05-11

This is the scenario. I have a .Net 2003 project from where I reference a VB6 class which I created. The problem is that I can't find out how to set a breakpoint and debug the class (I am getting an error from the class, and I need to debug it)

The main project runs as a Windows service, and it listens to port 8080 using winsockets... the vb6 class handles methods from a third class

I read in a couple of sites that this debugging method runs naturally when debugging .Net 2005 calling a VB6 class... Have tried to follow the steps described in those documents, but my application hangs

Any help will be appreciated
Question by:JohnP_Realini
  • 3
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Expert Comment

by:Kalpesh Chhatrala
ID: 34944406
Try this:

1. File | Open Solution, open the .exe file of the VB6 client.
2. Project properties | Configuration Properties | Debugging,
   set Debugger Type to "Managed only".
3. Set breakpoints in the VB.NET assembly's source files and start debugging.

You can also set Debugger Type to Mixed if you want to debug VB6 code too,
but do not set it to Auto or  Native Only - it will disable managed code debugging.

Detailed Article is Here :

Author Comment

ID: 34945680
Thanks, but I think my case is the opposite... My application is written in VB.Net 2003, and it calls functions from a VB6 Class... I can't get into the VB6 code while debugging from the main VB.Net 2003 project (which, by the way, runs attached to the Windows Service it created)

Thanks for any help

Accepted Solution

JohnP_Realini earned 0 total points
ID: 34946127
I found the solution in microsoft support site

Basically, there are a couple of tweak in the Debugging options in the VB6 class project, and then after debugging the main VB.Net project, I had to open the .cls file created by VB6, and voila! I was able to go through the class' code in debug mode

Thanks anyway

Author Closing Comment

ID: 34986545
I found the solution to my problem in the Microsoft Support site

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