Topic: C# DLL
Hi. I'm new here and i was wondering if you could make a dll in managed code so i can use it with C#.
I want something close to phidget's RFID API for .NET
Thanks for reading. Tagnard
Re: C# DLL
Dear Tagnard,
I don't see a problem. The sources are available, I would be happy to open a branch for any developer in the SVN repository that is willing to port this to c#. In the mean while, you can always use the current DLL in native-mode. But for manage code this quite sounds ugly 
Cheers,
Roel
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Re: C# DLL
I will try and write it with the current DLL. But i need to have the reader that i have ordered.
Re: C# DLL
Great! It would be very nice to have a simple Managed C# wrapper for libnfc.dll
I suspect that there will be a lot developers interested in developing more GUI oriented products using C#
Let me know when you have something ready for committing into the repository, so others can help testing.
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Re: C# DLL
i got my reader now and i have tried all day making thing work. but i failed.
I'm no good in C so if you want to make your DLL better, read this tutorial and implement it in the libnfc so i can access it from C#.
Re: C# DLL
Hey Tagnard,
Currently I'm working on version 1.1.0. It is almost done.
When I'm finished with that, I'll write a quick wrapper for ya to access it from C#
Cheers,
Roel
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Re: C# DLL
roel wrote:
Hey Tagnard,
Currently I'm working on version 1.1.0. It is almost done.
When I'm finished with that, I'll write a quick wrapper for ya to access it from C#Cheers,
Roel
I'm looking forward to it. I tried to pinvoke winscard.dll but it was harder than i thought.
Last edited by Tagnard (2009-03-24 12:36:18)
Re: C# DLL
I emailed you a pre-example
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Re: C# DLL
roel wrote:
I emailed you a pre-example
I checked your example and it looks like a good base to use. but i run into problems.
i can not connect to my reader(touchtag). I have closed touchtag service and i have tested it on
windows 7 build 7077 and on windows xp with same result.
all i get is "Could not connect to a NFC device"
Last edited by Tagnard (2009-04-19 18:08:13)
Re: C# DLL
Hey,
Even on new firmware version it should work without a tag on top of it. But maybe you could try that?
Does the c (example) in the /win32/bin directory (command-line) "list" tool work?
Or does it gives the same result?
Thanks a lot in advance for testing.
Cheers,
Roel
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Re: C# DLL
When i use the list.exe from libnfc 1.1.0 i get
"Connected to NFC reader: ACR122U102"
So it works with the c code.
// Tagnard
Re: C# DLL
I don't understand, they work the same way. And if you use the list.exe with the DLL that was supplied by the .NET example, does it still work then?
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Re: C# DLL
roel wrote:
I don't understand, they work the same way. And if you use the list.exe with the DLL that was supplied by the .NET example, does it still work then?
I tested both DLL's and they give me the same message.
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Re: C# DLL
When i removed the try/catch statement i got an exception.
"An attempt was made to load a program with an incorrect format. (Exception from HRESULT: 0x8007000B)"
pdi = nfc_connect(); is throwing this exception
Hope this helps you
Last edited by Tagnard (2009-04-20 07:51:31)
Re: C# DLL
roel wrote:
I emailed you a pre-example
Can I have that example too?
I am badly in need of being able to use libnfc via C#. But to be honest my C++ skills are at an alltime low.
So forgive me for almost begging. This would so save my behind.
Re: C# DLL
erlando wrote:
I am badly in need of being able to use libnfc via C#.
I found the best way was to write a COM object that exposed an OLE automation interface with a type library allowing the interop framework to use it.
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Re: C# DLL
Roel: Do you still have the example you sent me some time ago? I'm doing some progress with the RFID reader that i got from acs bot i have some problems with the reader that touchatag provides. If you still have the example i want to try again to get it working.
Re: C# DLL
Does anybody solved C# problems with libnfc? (except COM object communication)???
There has to be more user (developer) friendly way :-(
Re: C# DLL
I try to use as libnfc in Visual Studio 2008 to make an application in C # too.
I have a module equipped with an NFC PN533.
News about a possible use of libnfc C # under Windows 7?
I compiled everything but I do not have enough knowledge to integrate libnfc.
thank you