Calling unmanaged code with Visual Basic .NET

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Hi all,

I need tutorial, a complete tutor to guide on how to use unmanaged code with VB. Right now I have a source code for a device which writing on C & C++ I guest, based from dependency walker.

Anyone can provide me link for this? I've been stuck with this project around 1 month. Already search on Internet but cannot find any.

If someone know how to program a device from unmanaged code, kindly teach me master.. Really appreciate your kindness

*** Edited:

The file was send as a name exampleA.dll but when I try to add reference into VB.Net, it got error not valid assembly or COM component. When I copy to system32 and regsvr32, it failed that specified module cannot be found event it exist in the system32 folder

Posted 1-Dec-13 16:06pm

Luiey Ichigo

Updated 1-Dec-13 16:11pm

v2

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Dave Kreskowiak · Accepted Answer · 2013-12-01T17:00:00

Solution 3

You can't add a reference to the .DLL because it's not a .NET or COM-based library. It's a standard C library that requires you to use P/Invoke from your managed code to call those functions.

I sure hope you have the documentation on that .DLL and the functions it exports because, without it, you have no hope of P/Invoking the functions in that library.

Posted 1-Dec-13 17:00pm

Dave Kreskowiak

Comments

Sergey Alexandrovich Kryukov 1-Dec-13 23:27pm

My 5. I added some more links.
—SA

Ron Beyer · Accepted Answer · 2013-12-01T16:23:00

Solution 2

Even though the examples are in C#, this tutorial[^] will be very helpful to what you are trying to do.

Also see this tutorial[^].

Posted 1-Dec-13 16:23pm

Ron Beyer

Comments

Sergey Alexandrovich Kryukov 1-Dec-13 23:27pm

My 5. I added some more links, too.
—SA

Sergey Alexandrovich Kryukov · Accepted Answer · 2013-12-01T17:25:00

Solution 4

In addition to Solution 1 and Solution 2:

The basics of P/Invoke are explained here: http://en.wikipedia.org/wiki/P/Invoke[^].

This old Microsoft tutorial is nevertheless quite actual: http://msdn.microsoft.com/en-us/library/aa288468%28v=vs.71%29.aspx[^].

This CodeProject article can also be useful: Essential P/Invoke[^].

—SA

Posted 1-Dec-13 17:25pm

Sergey Alexandrovich Kryukov

Comments

Ron Beyer 1-Dec-13 23:32pm

5!

Sergey Alexandrovich Kryukov 2-Dec-13 0:51am

Thank you, Ron.
—SA