Driver version for NI4351 under XP

Question

Hello,
I am trying to use a NI4351 board to acquire thermocouples under VB.Net with NIDaq 6.9.3f5. I have a driver on the CD that comes with the board. However, installing the driver shows a version for WinNT/95/98. I downloaded from NI Web Site and foudn an ni435x.exe that is supposed to work with Win2K/XP.
When installing it also shows version for WinNT/98/95.
When calling functions for the driver, I always get an error FFFFD800. Sample installed with the drvier show up the same problem.
Thank you for your help
S. BARTHES

Answer 1

Currently .NET is not a supported platform for that driver. I know some people have had success getting things to work, but it will take some know-how on your part. Here are some comments from another .NET user with the NI-435x driver. This customer was using C#.
1) The NI 435x driver must be installed
2) LabWindows/CVI support must be installed (under DAQ traditional drivers)
3) Each DLL method that is to be called must be declared  using the DllImport attribute and both the extern and static modifiers.  
     For example, the following is the declaration for the NI435X_Getting_Started_No_Acc  method:
        [DllImport("ni435x_32.dll")]
        public static extern int NI435X_Getting_Started_No_Acc(string resourceName, string channelString, short
mode, double lowLimit, double highLimit, int numberOfScans, double[] scansData);
4) The following system namespace must be included to add support for the DLL Import and external method calls:
         using System.Runtime.InteropServices;
5) The ni435x.dll needs to be linked as a reference for the project.   This will also allow access to the constants defined within the DLL.
     For example, the NI435X_VOLTAGE constant is used in the following:
        short  mode  = (short) ni435x.DLLConstants.NI435X_VOLTAGE;
6) More information on using importing DLLs and external method calls can be found in Microsoft C# Language Specification - section 10.5.7 External methods, and in Microsoft C# Programmer's Reference - Platform Invoke Tutorial.