Issue with C# and Visual Basic .Net Instrument Control Tutorial

[Jeff-H]

I am trying to follow this procedure:

http://www.ni.com/white-paper/2739/en

I have .Net 4.0 and VS 2008 on my PC, and am using C#.  The doc says to install NI_VISA; I installed the latest version 5.1.2.  It then says to add a reference to NationalInstruments.Common and NationalInstruments.VisaNS. When I do that, I get a yellow flag saying the components could not be found. The ref version is 9.1.40.159 for Common and 9.0.40.156 for VISA.

Curiously, I also have a ref version 9.1.20.159 of the Common, and this one will load.

Questions:

1 - How can I get this to work?

2 - Is it possible at all with C#? The NI-VISA docs I have seen all talk about C++

[Jeff-H]

Oh, there is more. My VS2008, under <project-name> properties - application tab - targeted framework only allows .Net framework versions 2.0, 3.0, and 3.5 (no 4.0). So I tried to install NI-VISA 5.0.1 instead, but it said that I already have a later version of .Net and would not install. Is the solution to uninstall .Net 4.0? Who knows what that would break.

[nyc_(is_out_of_here)]

I am running Visual Basic Express 2010 on XP.

The required DLLs are found in C:\Program Files\National Instruments\MeasurementStudioVS2010\DotNET\Assemblies

Since you are using VS2008, you should be using 9.1.35.159

That is the only version found in C:\Program Files\National Instruments\MeasurementStudioVS2008\DotNET\Assemblies (64-bit) and the newest version in C:\Program Files\National Instruments\MeasurementStudioVS2008\DotNET\Assemblies

Which DLLs you would use depends on whether you are running Win7 or WinXP.

And, VS2008 goes up to .NET 3.5 not 4.0

Hope that helps.