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5.7

Using .NET Class library in VB 6.0

Asked by axnst2 in .NET, Windows ATL / WTL / COM Programming, ActiveX

Tags: .NET, COM

Hi Experts,

    I need to be able to use a .NET (VS 2005) class library in a legacy VB 6.0 project.  Here's what I have done so far:

- Marked the .NET class library as "Register for COM interop"
- Registered the DLL and created a .tlb using Regasm
- Referenced DLL in my VB 6.0 class
- Added the following code to my VB 6.0:

Line 1     Dim myNETClassInstance As MyNETNameSpace.CMyNetClass
Line 2     Set myNETClassInstance = New MyNETNameSpace.CMyNetClass

I get the following error on line 1 when I try to compile the VB 6 code: "User-defined type not defined"

VB 6 seems to recognize the .NET namespace because it capitalizes letters for me in the namespace name, but I don't think it's finding the CMyNetClass class within the NET namespace.

Now I researched this a little bit and i found this:

http://social.msdn.microsoft.com/forums/en-US/netfxbcl/thread/3b88ecf9-7345-4c2c-91f3-285fdafcc443

The artical mentiones something about having to have to create an "Interface to the calss".

How do i go about doing that?  I am not very familiar with COM so i am kind of lost!

Any help would be greatly appreciated!

Thanks,
axnst2
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Tags: .NET, COM
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