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Merging C# and VB.NET projects

Hi experts,

I have two Windows app projects, one written in C# and another written in VB.NET. Is it possible to combine these 2 projects?

I know we can add multiple projects under the same solution but what I want to do is really calling forms in C# project from VB project. If it's possible, may I know how to do it? Using DLL?

Thanks!

SOLUTION

b1xml2

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Bob Learned

You cannot have VB code in a C# project until 2005 (or 2006?) version of .NET.

Bob

b1xml2

that is obvious Bob,

but you can instantiate forms written in c# in the vb.net project using vb.net syntax

Bob Learned

Sometimes, though, you gotta state the obvious, because it is not always so obvious to everyone. :)

Bob

b1xml2

that, I must give you, is so true!

nachiket

well one more thing, it has to follow CLS standards to call VB.NET object from C# and vice versa!!

yeewee64

ASKER

Hi guys, thanks for your prompt reply.

BTW, b1xml2, I tried to follow your instructions but I don't know how to do this step "Add the c# project reference to the VB project". I tried to bring up the "Add Reference" dialog in the VB project, and then clicked the "Project" tab, from there I selected the C# project. When I clicked OK, I was given an error message saying "A reference to ... could not be added. An assembly must have a 'dll' extension in order to be referenced".

Did I add reference the right way?

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Bob Learned

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yeewee64

ASKER

OK, I've done a simple test, create a form in C# class library project and then instantiate the form from another VB project, it works.

So is this the way you guys are referring to? Or did I understand wrongly?

Somehow I got the impression that VB and C# can work together pretty well so I thought they could be integrated without using DLL. :)

Anyway, converting the C# project to VB or vice versa is not a huge task, I'm just trying to avoid rewriting codes.

Bob Learned

Until I can figure out how to make a project reference to an EXE, I think that the only way that you are going to get this to work is to convert one of the projects to a DLL and go from there.

Bob

b1xml2

only dlls would work, You could in any .NET project load an exe but you then have to pass in external args... not the same of course as referencing an assembly

yeewee64

ASKER

OK, thanks guys for all your comment.