Call C# Dll from Fox

[JRudisill]

Not sure where to post so I will do so in both. I am trying to call a C sharp DLL which I wrote from foxpro. I keep getting entry point is not found. If I call this dll from C Sharp I have no problems. Is there something I need to do for Fox to recognize the entry point?

Fox Code:
Declare String Enrolled In C:\Fing\FingerScan.ocx;
String csUsers, String csFinger

cResults = Enrolled(cUser,cFing)


C Sharp Code:
public static string Ident()
{
Identify nDent = new Identify();
return nDent.Input();
}

public string Input()
{
return RetVal;
}

 

[Mike Lewis]

I might be missing something, but shouldn't you have a method within your C# code called Enrolled? That is what Fox is looking for.

Mike

__________________________________
Mike Lewis (Edinburgh, Scotland)

My sites:
Visual FoxPro (www.ml-consult.demon.co.uk)
Crystal Reports (www.ml-crystal.com)

 

[JRudisill]

Sorry I actually have several classes in the DLL. It does not work with any of them. It is a biometric program that reads fingerprints. We have a project written in Fox that checks in members at a gym.

FOX:
Declare String Enrolled In C:\Fing\FingerScan.Dll;
String @csUsers, String @csFinger

cResults = Enrolled(@cUser,@cFing)

C SHARP:
public static string Enrolled(string User,string Finger)
{
Enroll Enr = new Enroll(User,Finger);
return Enr.Input();
}

public string Input()
{
return RetVal;
}

 

[craigsboyd]

JRudisill,

Here's a FAQ I wrote that might help you:

Build a .NET DLL and use it in VFP
faq184-3836

http://www.sweetpotatosoftware.com

 

[Mike Lewis]

JRudisill,

We have a project written in Fox that checks in members at a gym.

Out of curiosity, is this a case of "we have this new biometric technology, so let's figure out a way of using it"? Or is there a genuine danger that people will forge gym membership cards?

Mike

__________________________________
Mike Lewis (Edinburgh, Scotland)

My sites:
Visual FoxPro (www.ml-consult.demon.co.uk)
Crystal Reports (www.ml-crystal.com)

 

[TamarGranor]

Good point, Mike. I'd be finding a new gym if mine asked for a fingerprint or a retinal scan. They have my photo--that's enough.

Tamar

 

[JRudisill]

This will probably be used more for personal training. Managers are wanting a way to verify that people are actually showing up for their appointments. Since the trainers get paid by commission. I am sure that in some cases this could be used for checkin purposes. One of our competitors is currently using this technology and some of our clients have been asking for it.