How to use "GPIB-USB-HS" in C#

[ChuChuNice]

Hi there,

I have a mission is "use GPIB control several of instruments"

But I am not good at program and first use GPIB-USB-HS.

My boss only gave me previous project, but it's not work now.

It's show error code "CS0246" in program.

(Of course I have other error, but I think this is the most important)

I tried to add reference but program didn't work too.

(Project>Add reference>choose "National Instruments 488.2" and "NationalInstruments.Common")

using Ivi.Visa;
using NationalInstruments.Visa;

Above is the code with error.

I installed NI 488.2 first and I confirm the connection to instrument is successful (by Ni-VISA Interactive Control)

How to solve error code "CS0246"?

or where can I find sample code?

System: Win10

hardware: GPIB-USB-HS

Visual studio: 2019 community

Project: Windows Forms APP (.NET Framework)

Best regards,

[santo_13 · Accepted solution]

You're "using" VISA but never added it as a reference.

Please add a reference to the VISA library

[ChuChuNice]

Dear Mr. Santhosh

I can't find "Ivi.Visa Assembly" & "National Instruments VISA" in reference.

Did I miss some software?

Thanks for your help.

[santo_13]

You have the necessary software installed.

The screenshot you posted is from NI Package Manager. You've to include the references in your C# project in Visual Studio and not in NIPM.

[ChuChuNice]

Dear Mr.Santhosh,

Sorry for reply late.

I mean I can't find "Ivi.Visa Assembly" & "National Instruments VISA" in reference.

Above is VS2019 screenshot.

Page "Projects", "Shared Projects" and "Browse" is empty.

And I actually installed NI VISA.

Did I miss any steps?

[santo_13]

Try searching just for "VISA" under Assemblies>>Framework

And changing the target framework to 4.0 or 4.5

[ChuChuNice]

Dear Mr.Santhosh,

You totally solved my question.

Thanks for your help.