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Calling a vb.net dll from a vb6 app

Posted on 2006-11-01
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Last Modified: 2012-05-05
We have a legacy vb6 application and want to expand iots functionality by creating a dll "ITS32.dll" in vb.net and calling it from vb6. I created a .net controlLibrary project and built a beginning dll. I ran it through tlbexp.exe, registered it with regasm.exe, and copied both the ITS32.tlb and ITS32.dll files to the System32 folder. I tried to add the dll to the vb6 project references but it would only accept the tlb. I created a declare statement in the vb6 project to identify the dll sub routine "createForm." My vb6 project has just a command button to call the dll sub. I get an error "Can't find dll entry point createForm in ITS32."

What advice do you have for me?
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Question by:ZuTrekker
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Fernando Soto earned 2000 total points
ID: 17851592
Hi ZuTrekker;

I think you will find what you are looking for here.

How to call a Visual Basic .NET or Visual Basic 2005 assembly from Visual Basic 6.0

http://support.microsoft.com/kb/817248

Fernando
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Author Comment

by:ZuTrekker
ID: 17852052
Well, that kb was very helpful. I copied the example exactly and now get an error message "Cannot create a file when that file already exists." That comes up on the "Set myObject = New TestProj.COMClass1" statement.
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Author Comment

by:ZuTrekker
ID: 17852146
OK, I got past that. Now I get the same message on the line that reads "MsgBox myObject.myFunction" which seems weird because myFunction appears when the period is pressed.
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