C# Component for VB6 application

[JCruz063]

Hi gang,
Can anybody tell me how to go about creating a code component (e.g. a class) to be used by a VB6 application?

Thanks

JC

 

[JCruz063]

By the way (in case you ask), I intend to write the code component in C#, to be used in a VB6 app.

JC

 

[crazyboybert]

HI JC

As this is Interop between the managed and unmanaged worlds this is not entirely straight forward. There are a number of steps you'd need to follow to achieve this.

First up create your component in C# and register it to the Global Assembly Cache using the gacutil command line tool

Next define a COM Interface for the component, register this also.

Next create a COM Adapter for the component which implements the COM Interface.

Implement the COM Interface in your component.

Deploy the COM Adapter by regsitering to the GAC and generating a COM type library using the regasm command line tool.

Finally add the reference to the COM Adapter in your VB6 project.

There is a fair bit of documentation on this but havign only done this in training exercises rather than real world development I can't provide much more than theory.

Hope this gets you started though...

Rob


Go placidly amidst the noise and haste, and remember what peace there may be in silence - Erhmann 1927

 

[JCruz063]

Thanks Rob,
Do you know where such documentation is?

Thanks again!

JC

 

[DevonTaig]

I have attempted to create a C# class that exposes a couple of public members to a COM client. Although the VB6 client can call the methods and properties of the .NET server and the code executes properly, there is no intellisense in VB 6 for the class (making it difficult to use).

I have tried to use regasm with the tlb option and tlbexp. Is there something else?