├── .appveyor.yml ├── .github └── workflows │ └── build.yml ├── .gitignore ├── .travis.yml ├── GacLoader.cs ├── IviVisaNetSample.csproj ├── IviVisaNetSample.sln ├── LICENSE ├── Program.cs └── README.md /.appveyor.yml: -------------------------------------------------------------------------------- 1 | image: Visual Studio 2017 2 | configuration: Debug 3 | platform: Any CPU 4 | 5 | before_build: 6 | - nuget restore 7 | 8 | build: 9 | project: IviVisaNetSample.sln 10 | verbosity: minimal -------------------------------------------------------------------------------- /.github/workflows/build.yml: -------------------------------------------------------------------------------- 1 | name: build 2 | 3 | on: 4 | push: 5 | branches: 6 | - master 7 | 8 | jobs: 9 | build: 10 | runs-on: windows-latest 11 | 12 | steps: 13 | - name: Checkout code 14 | uses: actions/checkout@v2 15 | 16 | - name: Setup MSBuild 17 | uses: microsoft/setup-msbuild@v1.0.2 18 | 19 | - name: Restore NuGet packages 20 | run: nuget restore 21 | 22 | - name: Build solution 23 | run: msbuild /p:Configuration=Debug /p:Platform="Any CPU" IviVisaNetSample.sln 24 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | ## Ignore Visual Studio temporary files, build results, and 2 | ## files generated by popular Visual Studio add-ons. 3 | ## 4 | ## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore 5 | 6 | # User-specific files 7 | *.suo 8 | *.user 9 | *.userosscache 10 | *.sln.docstates 11 | 12 | # User-specific files (MonoDevelop/Xamarin Studio) 13 | *.userprefs 14 | 15 | # Build results 16 | [Dd]ebug/ 17 | [Dd]ebugPublic/ 18 | [Rr]elease/ 19 | [Rr]eleases/ 20 | x64/ 21 | x86/ 22 | bld/ 23 | [Bb]in/ 24 | [Oo]bj/ 25 | [Ll]og/ 26 | 27 | # Visual Studio 2015 cache/options directory 28 | .vs/ 29 | # Uncomment if you have tasks that create the project's static files in wwwroot 30 | #wwwroot/ 31 | 32 | # MSTest test Results 33 | [Tt]est[Rr]esult*/ 34 | [Bb]uild[Ll]og.* 35 | 36 | # NUNIT 37 | *.VisualState.xml 38 | TestResult.xml 39 | 40 | # Build Results of an ATL Project 41 | [Dd]ebugPS/ 42 | [Rr]eleasePS/ 43 | dlldata.c 44 | 45 | # .NET Core 46 | project.lock.json 47 | project.fragment.lock.json 48 | artifacts/ 49 | **/Properties/launchSettings.json 50 | 51 | *_i.c 52 | *_p.c 53 | *_i.h 54 | *.ilk 55 | *.meta 56 | *.obj 57 | *.pch 58 | *.pdb 59 | *.pgc 60 | *.pgd 61 | *.rsp 62 | *.sbr 63 | *.tlb 64 | *.tli 65 | *.tlh 66 | *.tmp 67 | *.tmp_proj 68 | *.log 69 | *.vspscc 70 | *.vssscc 71 | .builds 72 | *.pidb 73 | *.svclog 74 | *.scc 75 | 76 | # Chutzpah Test files 77 | _Chutzpah* 78 | 79 | # Visual C++ cache files 80 | ipch/ 81 | *.aps 82 | *.ncb 83 | *.opendb 84 | *.opensdf 85 | *.sdf 86 | *.cachefile 87 | *.VC.db 88 | *.VC.VC.opendb 89 | 90 | # Visual Studio profiler 91 | *.psess 92 | *.vsp 93 | *.vspx 94 | *.sap 95 | 96 | # TFS 2012 Local Workspace 97 | $tf/ 98 | 99 | # Guidance Automation Toolkit 100 | *.gpState 101 | 102 | # ReSharper is a .NET coding add-in 103 | _ReSharper*/ 104 | *.[Rr]e[Ss]harper 105 | *.DotSettings.user 106 | 107 | # JustCode is a .NET coding add-in 108 | .JustCode 109 | 110 | # TeamCity is a build add-in 111 | _TeamCity* 112 | 113 | # DotCover is a Code Coverage Tool 114 | *.dotCover 115 | 116 | # Visual Studio code coverage results 117 | *.coverage 118 | *.coveragexml 119 | 120 | # NCrunch 121 | _NCrunch_* 122 | .*crunch*.local.xml 123 | nCrunchTemp_* 124 | 125 | # MightyMoose 126 | *.mm.* 127 | AutoTest.Net/ 128 | 129 | # Web workbench (sass) 130 | .sass-cache/ 131 | 132 | # Installshield output folder 133 | [Ee]xpress/ 134 | 135 | # DocProject is a documentation generator add-in 136 | DocProject/buildhelp/ 137 | DocProject/Help/*.HxT 138 | DocProject/Help/*.HxC 139 | DocProject/Help/*.hhc 140 | DocProject/Help/*.hhk 141 | DocProject/Help/*.hhp 142 | DocProject/Help/Html2 143 | DocProject/Help/html 144 | 145 | # Click-Once directory 146 | publish/ 147 | 148 | # Publish Web Output 149 | *.[Pp]ublish.xml 150 | *.azurePubxml 151 | # TODO: Comment the next line if you want to checkin your web deploy settings 152 | # but database connection strings (with potential passwords) will be unencrypted 153 | *.pubxml 154 | *.publishproj 155 | 156 | # Microsoft Azure Web App publish settings. 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Backup files are not needed, 213 | # because we have git ;-) 214 | _UpgradeReport_Files/ 215 | Backup*/ 216 | UpgradeLog*.XML 217 | UpgradeLog*.htm 218 | 219 | # SQL Server files 220 | *.mdf 221 | *.ldf 222 | *.ndf 223 | 224 | # Business Intelligence projects 225 | *.rdl.data 226 | *.bim.layout 227 | *.bim_*.settings 228 | 229 | # Microsoft Fakes 230 | FakesAssemblies/ 231 | 232 | # GhostDoc plugin setting file 233 | *.GhostDoc.xml 234 | 235 | # Node.js Tools for Visual Studio 236 | .ntvs_analysis.dat 237 | node_modules/ 238 | 239 | # Typescript v1 declaration files 240 | typings/ 241 | 242 | # Visual Studio 6 build log 243 | *.plg 244 | 245 | # Visual Studio 6 workspace options file 246 | *.opt 247 | 248 | # Visual Studio 6 auto-generated workspace file (contains which files were open etc.) 249 | *.vbw 250 | 251 | # Visual Studio LightSwitch build output 252 | **/*.HTMLClient/GeneratedArtifacts 253 | **/*.DesktopClient/GeneratedArtifacts 254 | **/*.DesktopClient/ModelManifest.xml 255 | **/*.Server/GeneratedArtifacts 256 | **/*.Server/ModelManifest.xml 257 | _Pvt_Extensions 258 | 259 | # Paket dependency manager 260 | .paket/paket.exe 261 | paket-files/ 262 | 263 | # FAKE - F# Make 264 | .fake/ 265 | 266 | # JetBrains Rider 267 | .idea/ 268 | *.sln.iml 269 | 270 | # CodeRush 271 | .cr/ 272 | 273 | # Python Tools for Visual Studio (PTVS) 274 | __pycache__/ 275 | *.pyc 276 | 277 | # Cake - Uncomment if you are using it 278 | # tools/** 279 | # !tools/packages.config 280 | 281 | # Telerik's JustMock configuration file 282 | *.jmconfig 283 | 284 | # BizTalk build output 285 | *.btp.cs 286 | *.btm.cs 287 | *.odx.cs 288 | *.xsd.cs 289 | -------------------------------------------------------------------------------- /.travis.yml: -------------------------------------------------------------------------------- 1 | language: csharp 2 | solution: IviVisaNetSample.sln 3 | mono: 4 | - latest 5 | install: 6 | - nuget restore ./IviVisaNetSample.sln 7 | script: 8 | - msbuild ./IviVisaNetSample.sln 9 | # - mono ./bin/Debug/IviVisaNetSample.exe 10 | -------------------------------------------------------------------------------- /GacLoader.cs: -------------------------------------------------------------------------------- 1 | using Ivi.Visa.ConflictManager; 2 | using System; 3 | using System.IO; 4 | using System.Linq; 5 | using System.Reflection; 6 | 7 | namespace IviVisaNetSample 8 | { 9 | #if NET5_0_OR_GREATER 10 | /// 11 | /// Class used to load .NET Framework assemblies located in GAC from .NET 5+ 12 | /// Requred only for expiremental using VISA.NET library in .NET 5+ 13 | /// 14 | internal static class GacLoader 15 | { 16 | /// 17 | /// Load an assembly from the GAC. 18 | /// 19 | /// 20 | /// Loaded assembly 21 | /// 22 | public static Assembly Load(AssemblyName assemblyName) 23 | { 24 | var gacPaths = new[] 25 | { 26 | $"{Environment.GetFolderPath(Environment.SpecialFolder.Windows)}\\Microsoft.NET\\assembly\\GAC_MSIL\\{assemblyName.Name}", 27 | $"{Environment.GetFolderPath(Environment.SpecialFolder.Windows)}\\assembly\\GAC_MSIL\\{assemblyName.Name}", 28 | }; 29 | 30 | foreach (var folder in gacPaths.Where(f => Directory.Exists(f))) 31 | { 32 | foreach (var subfolder in Directory.EnumerateDirectories(folder)) 33 | { 34 | if (subfolder.Contains(Convert.ToHexString(assemblyName.GetPublicKeyToken()), StringComparison.OrdinalIgnoreCase) 35 | && subfolder.Contains(assemblyName.Version.ToString(), StringComparison.OrdinalIgnoreCase)) 36 | { 37 | var assemblyPath = Path.Combine(subfolder, assemblyName.Name + ".dll"); 38 | if (File.Exists(assemblyPath)) 39 | return Assembly.LoadFrom(assemblyPath); 40 | } 41 | } 42 | } 43 | throw new FileNotFoundException($"Assembly {assemblyName} not found."); 44 | } 45 | 46 | /// 47 | /// Preloading installed VISA implementation assemblies for NET 5+ 48 | /// 49 | public static void LoadInstalledVisaAssemblies() { 50 | var installedVisas = new ConflictManager().GetInstalledVisas(ApiType.DotNet); 51 | foreach (var visaLibrary in installedVisas) 52 | { 53 | try 54 | { 55 | var inst = GacLoader.Load(new AssemblyName(visaLibrary.Location.Substring(visaLibrary.Location.IndexOf(",") + 1))); 56 | Console.WriteLine($"Loaded assembly \"{visaLibrary.FriendlyName}\"."); 57 | } 58 | catch (Exception exception) 59 | { 60 | Console.WriteLine($"Failed to load assembly \"{visaLibrary.FriendlyName}\": {exception.Message}"); 61 | } 62 | } 63 | } 64 | } 65 | #endif 66 | } 67 | -------------------------------------------------------------------------------- /IviVisaNetSample.csproj: -------------------------------------------------------------------------------- 1 |  2 | 3 | 4 | Exe 5 | net48;net5.0;net8.0 6 | AnyCPU;x64;x86 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | -------------------------------------------------------------------------------- /IviVisaNetSample.sln: -------------------------------------------------------------------------------- 1 |  2 | Microsoft Visual Studio Solution File, Format Version 12.00 3 | # Visual Studio Version 16 4 | VisualStudioVersion = 16.0.30225.117 5 | MinimumVisualStudioVersion = 10.0.40219.1 6 | Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "IviVisaNetSample", "IviVisaNetSample.csproj", "{181CDD33-8577-4F46-AF93-2A02660E51AC}" 7 | EndProject 8 | Global 9 | GlobalSection(SolutionConfigurationPlatforms) = preSolution 10 | Debug|Any CPU = Debug|Any CPU 11 | Release|Any CPU = Release|Any CPU 12 | EndGlobalSection 13 | GlobalSection(ProjectConfigurationPlatforms) = postSolution 14 | {181CDD33-8577-4F46-AF93-2A02660E51AC}.Debug|Any CPU.ActiveCfg = Debug|Any CPU 15 | {181CDD33-8577-4F46-AF93-2A02660E51AC}.Debug|Any CPU.Build.0 = Debug|Any CPU 16 | {181CDD33-8577-4F46-AF93-2A02660E51AC}.Release|Any CPU.ActiveCfg = Release|Any CPU 17 | {181CDD33-8577-4F46-AF93-2A02660E51AC}.Release|Any CPU.Build.0 = Release|Any CPU 18 | EndGlobalSection 19 | GlobalSection(SolutionProperties) = preSolution 20 | HideSolutionNode = FALSE 21 | EndGlobalSection 22 | GlobalSection(ExtensibilityGlobals) = postSolution 23 | SolutionGuid = {C279BA55-5C25-46DB-A6E6-2819C21F7D3D} 24 | EndGlobalSection 25 | EndGlobal 26 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /Program.cs: -------------------------------------------------------------------------------- 1 | using Ivi.Visa; 2 | using System; 3 | using System.Diagnostics; 4 | using System.IO; 5 | 6 | namespace IviVisaNetSample 7 | { 8 | static class Program 9 | { 10 | static void Main() 11 | { 12 | // Get VISA.NET Shared Components version. 13 | Version visaNetSharedComponentsVersion = typeof(GlobalResourceManager).Assembly.GetName().Version; 14 | Console.WriteLine($"VISA.NET Shared Components version {visaNetSharedComponentsVersion}."); 15 | 16 | // Check whether VISA Shared Components is installed before using VISA.NET. 17 | // If access VISA.NET without the visaConfMgr.dll library, an unhandled exception will 18 | // be thrown during termination process due to a bug in the implementation of the 19 | // VISA.NET Shared Components, andthe application will crash. 20 | try 21 | { 22 | // Get an available version of the VISA Shared Components. 23 | FileVersionInfo visaSharedComponentsInfo = FileVersionInfo.GetVersionInfo(Path.Combine(Environment.SystemDirectory, "visaConfMgr.dll")); 24 | Console.WriteLine($"VISA Shared Components version {visaSharedComponentsInfo.ProductVersion} detected."); 25 | } 26 | catch (FileNotFoundException) 27 | { 28 | Console.WriteLine($"VISA implementation compatible with VISA.NET Shared Components {visaNetSharedComponentsVersion} not found. Please install corresponding vendor-specific VISA implementation first."); 29 | return; 30 | } 31 | 32 | #if NET5_0_OR_GREATER 33 | // Preloading installed VISA implementation assemblies for NET 5+ 34 | GacLoader.LoadInstalledVisaAssemblies(); 35 | #endif 36 | 37 | try 38 | { 39 | // Connect to the instrument. 40 | var resourceName = "TCPIP::localhost::5025::SOCKET"; 41 | using (IVisaSession resource = GlobalResourceManager.Open(resourceName, AccessModes.ExclusiveLock, 2000)) 42 | { 43 | if (resource is IMessageBasedSession session) 44 | { 45 | // Ensure termination character is enabled as here in example we use a SOCKET connection. 46 | session.TerminationCharacterEnabled = true; 47 | 48 | // Request information about an instrument. 49 | session.FormattedIO.WriteLine("*IDN?"); 50 | string instrumentInfo = session.FormattedIO.ReadLine(); 51 | Console.WriteLine($"Instrument information: {instrumentInfo}"); 52 | } 53 | else 54 | { 55 | Console.WriteLine("Not a message-based session."); 56 | } 57 | } 58 | } 59 | catch (Exception exception) 60 | { 61 | if (exception is TypeInitializationException && exception.InnerException is DllNotFoundException) 62 | { 63 | // VISA Shared Components is not installed. 64 | Console.WriteLine($"VISA implementation compatible with VISA.NET Shared Components {visaNetSharedComponentsVersion} not found. Please install corresponding vendor-specific VISA implementation first."); 65 | } 66 | else if (exception is VisaException && exception.Message == "No vendor-specific VISA .NET implementation is installed.") 67 | { 68 | // Vendor-specific VISA.NET implementation is not available. 69 | Console.WriteLine($"VISA implementation compatible with VISA.NET Shared Components {visaNetSharedComponentsVersion} not found. Please install corresponding vendor-specific VISA implementation first."); 70 | } 71 | else if (exception is EntryPointNotFoundException) 72 | { 73 | // Installed VISA Shared Components are not compatible with VISA.NET Shared Components. 74 | Console.WriteLine($"Installed VISA Shared Components version {visaNetSharedComponentsVersion} does not support VISA.NET. Please upgrade VISA implementation."); 75 | } 76 | else 77 | { 78 | // Handle remaining errors. 79 | Console.WriteLine($"Exception: {exception.Message}"); 80 | } 81 | } 82 | 83 | Console.ReadKey(); 84 | } 85 | } 86 | } 87 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # VISA.NET example # 2 | 3 | [![Build Status Github](https://github.com/vnau/IviVisaNetSample/actions/workflows/build.yml/badge.svg)](https://github.com/vnau/IviVisaNetSample/actions/workflows/build.yml) [![Build Status AppVeyor](https://ci.appveyor.com/api/projects/status/dag3r35u0sn1sci3?svg=true)](https://ci.appveyor.com/project/vnau/IviVisaNetSample) 4 | 5 | In the traditional approach, [VISA.NET Shared Components](https://www.ivifoundation.org/Shared-Components/default.html#visa-and-visanet-shared-components) are distributed solely as part of a vendor's installer for its VISA implementation. 6 | This approach necessitates the installation of the vendor's VISA library implementation on the CI server environment, even if communication with instruments is not required at this stage. 7 | 8 | If a developed application is intended to work with various third-party VISA implementations, and no VISA libraries are installed, it would be beneficial if it could provide only a part of the functionality or report the necessity of the VISA library. 9 | 10 | This is a simple example of an application bypassing those limitations by using the unofficial NuGet VISA.NET Shared Components distribution, [Kelary.Ivi.Visa](https://www.nuget.org/packages/Kelary.Ivi.Visa/). 11 | 12 | ### Using VISA.NET in .NET 5+ solutions ### 13 | 14 | .NET Standard, introduced in 2016, marked a pivotal moment in the evolution of the .NET ecosystem. 15 | Since then, many versions of .NET have emerged, diminishing the relevance of the traditional .NET Framework for new projects. 16 | 17 | Despite these advancements, VISA.NET remains tied to .NET Framework 2.0, with no indication from the IVI Foundation of plans to embrace modern technologies. 18 | 19 | A notable challenge is VISA.NET's limited integration into projects with contemporary .NET runtimes. 20 | However, compatibility has improved since .NET Core 2, allowing referencing of .NET Framework assemblies in compatibility mode. This suggests potential usability of the VISA.NET library and .NET Framework implementations within a modern .NET runtime. 21 | 22 | Another challenge arises as the modern .NET runtime no longer uses the GAC, which VISA.NET relies on. 23 | This issue is mitigated by preloading VISA.NET implementations. 24 | 25 | In this repository, an **experimental** .NET 8 example application showcases potential VISA.NET usage with various vendors implementations. 26 | Despite progress, successful execution is not guaranteed, as the .NET runtime may lack support for all .NET Framework APIs. 27 | Basic functions have been tested with Rohde & Schwarz and Keysight implementations, but some functions may require further testing. 28 | 29 | We look forward to the IVI Foundation moving the VISA.NET library from the .NET Framework to the .Net Standard, which will allow VISA.NET to become not only interchangeable, but also cross-platform. 30 | 31 | IVI Foundation announces in [VPP-4.3.6](https://www.ivifoundation.org/downloads/VISA/vpp436_2024-02-08.pdf) that the *VISA.NET* shared components version 7.3 and later will be available in both *.NET Framework* versions that target *.NET 4.5*, and *.NET* versions that target *.NET 6.0* or after. 32 | 33 | ### Existing VISA.NET implementations ### 34 | 35 | In most cases, an application built with VISA.NET Shared Components version 5.5 will work with later implementations of Shared Components. 36 | For .NET 5+ projects, the Shared Components version must match those that the implementation depends on. 37 | 38 | Below is a non-exhaustive list of vendor-specific VISA implementations with VISA.NET support. 39 | 40 | | Implementation | Size | VISA.NET Shared Components Version | 41 | | --- | ---- | ---- | 42 | | [Rohde & Schwarz VISA 7.2.3 for Windows](https://scdn.rohde-schwarz.com/ur/pws/dl_downloads/dl_application/application_notes/1dc02___rs_v/RS_VISA_Setup_Win_7_2_3.exe)| 63 MB | 7.2 | 43 | | [NI-VISA 2023 Q4](https://www.ni.com/en/support/downloads/drivers/download.ni-visa.html#494653)| 1.41 GB | 7.2 | 44 | | [Rohde & Schwarz VISA 5.12.3 for Windows](https://www.rohde-schwarz.com/us/applications/r-s-visa-application-note_56280-148812.html) | 59 MB | 5.11 | 45 | | [Keysight IO Libraries Suite 2019](https://www.keysight.com/main/software.jspx?id=2175637) | 251 MB | 5.11 | 46 | | [NI-VISA 20.0](https://www.ni.com/en/support/downloads/drivers/download.ni-visa.html#346210)| 1.16 GB | 5.11 | 47 | | [Keysight IO Libraries Suite 2018](https://www.keysight.com/main/software.jspx?id=2175637) | 260 MB | 5.8 | 48 | | [Keysight IO Libraries Suite 17.2](https://www.keysight.com/main/software.jspx?id=2784293) | 191 MB | 5.6 | 49 | | [NI-VISA 15.0,17.5](https://www.ni.com/en/support/downloads/drivers/download.ni-visa.html#306106) | 122 MB | 5.6 | 50 | | [Kikusui KI-VISA 5.5](https://www.kikusui.co.jp/en/download/en/?fn=com_kivisa) | 89 MB | 5.5 | 51 | --------------------------------------------------------------------------------