nanoFramework.CoreLibrary 1.12.0

.NET Framework
NuGet\Install-Package nanoFramework.CoreLibrary -Version 1.12.0
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
dotnet add package nanoFramework.CoreLibrary --version 1.12.0
<PackageReference Include="nanoFramework.CoreLibrary" Version="1.12.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add nanoFramework.CoreLibrary --version 1.12.0
#r "nuget: nanoFramework.CoreLibrary, 1.12.0"
#r directive can be used in F# Interactive, C# scripting and .NET Interactive. Copy this into the interactive tool or source code of the script to reference the package.
// Install nanoFramework.CoreLibrary as a Cake Addin
#addin nuget:?package=nanoFramework.CoreLibrary&version=1.12.0

// Install nanoFramework.CoreLibrary as a Cake Tool
#tool nuget:?package=nanoFramework.CoreLibrary&version=1.12.0

Quality Gate Status Reliability Rating License NuGet #yourfirstpr Discord

nanoFramework logo

Welcome to the .NET nanoFramework Base Class Library repository

Build status

Component Build Status NuGet Package
Base Class Library Build Status NuGet
Base Class Library w/o reflection Build Status NuGet
Base Class Library (preview) Build Status NuGet
Base Class Library w/o reflection (preview) Build Status NuGet

BCL Flavours

The .NET nanoFramework Base Class Library is provided in two flavours: with or without support for System.Reflection namespace. The reason for this is that the reflection API adds up a significant size to the DLL and image size. For targets with smaller flash this can be prohibitive.

Unit Test

nanoFramework has a dedicated Unit Test framework. This repository has Unit Test and you will find all of them under the Tests folder. The main solution embed all all the tests as well. You can run them directly from Visual Studio and create new tests. For more information on the Unit Test Framework.

CoreLibrary has specific needs that differ from what you'll find in the documentation:

  • You need to have the nanoFramework.TestFramework as a NuGet package as it will bring the nanoCLR Win32 emulator
  • You need to remove the reference to mscorlib, nanoFramework.TestFramework and nanoFramework.UnitTestLauncher
  • Use project reference instead for all those 3 elements

You can then run the test either on a real device, either in the emulator as described in the documentation. You may have to manually flash your device for the mscorlib version to match the one you are building on.

Important: Any new code checked in this repository will have to:

  • have a proper test covering for all the methods, properties, events and the possible exceptions,
  • do not break more of the the existing tests meaning, in other words, it should not create more issues than already existing.

Test structure and project reference

All the projects are referenced based and to be able to run the tests in the pipeline, in command line and in Visual Studio, it does require a specific structure:

  • The NFUnitTestAdapter project must be present and untouched. It does contains the core elements needed to have the nanoCLR Win32 application present.
  • You need to have a nano.runsettings file in each sub directory you want to run the tests on from Visual Studio
  • If you want to run the tests in command line you have to use the Developer Command Prompt for VS 2019 then you can use from the home cloned lib-CoreLibrary directory a command line like this one:
vstest.console.exe .\Tests\NFUnitTestBitConverter\bin\Release\NFUnitTest.dll  /Settings:.\Tests\NFUnitTestAdapater\nano.runsettings /TestAdapterPath:.\nanoFramework.TestFramework\source\TestAdapter\bin\Debug\net4.8 /Diag:.\log.txt /Logger:trx


  • You have to build the TestAdapter from the source in this case. You can use the path to the NuGet as well, this will have the same effect.
  • you have full diagnostic enabled in this case.

Feedback and documentation

For documentation, providing feedback, issues and finding out how to contribute please refer to the Home repo.

Join our Discord community here.


The list of contributors to this project can be found at CONTRIBUTORS.


The nanoFramework Class Libraries are licensed under the MIT license.

Code of Conduct

This project has adopted the code of conduct defined by the Contributor Covenant to clarify expected behaviour in our community. For more information see the .NET Foundation Code of Conduct.

.NET Foundation

This project is supported by the .NET Foundation.

Product Versions
.NET Framework net
Compatible target framework(s)
Additional computed target framework(s)
Learn more about Target Frameworks and .NET Standard.

This package has no dependencies.

NuGet packages (233)

Showing the top 5 NuGet packages that depend on nanoFramework.CoreLibrary:

Package Downloads
nanoFramework.Runtime.Events The ID prefix of this package has been reserved for one of the owners of this package by

This package includes the nanoFramework.Runtime.Events assembly for nanoFramework C# projects. This package requires a target with nanoFramework.Runtime.Events v100.0.8.0 (checksum 0x0EAB00C9).

nanoFramework.Windows.Devices.Gpio The ID prefix of this package has been reserved for one of the owners of this package by

This package includes the Windows.Devices.Gpio assembly for nanoFramework C# projects. This package requires a target with Windows.Devices.Gpio v100.1.2.2 (checksum 0xC41539BE).

nanoFramework.System.Math The ID prefix of this package has been reserved for one of the owners of this package by

This package includes the nanoFramework.System.Math assembly for .NET nanoFramework C# projects. This package requires a target with System.Math v100.0.5.4 (checksum 0x46092CB1).

nanoFramework.Runtime.Native The ID prefix of this package has been reserved for one of the owners of this package by

This package includes the nanoFramework.Runtime.Native assembly for .NET nanoFramework C# projects. This package requires a target with nanoFramework.Runtime.Native v100.0.9.0 (checksum 0x109F6F22).


Adds Temperature units for Units.NET on .NET nanoFramework. For .NET or .NET Core, use UnitsNet instead.

GitHub repositories (4)

Showing the top 4 popular GitHub repositories that depend on nanoFramework.CoreLibrary:

Repository Stars
Sample code referenced by the .NET documentation
Makes life working with units of measurement just a little bit better.
AMQP 1.0 .NET Library
🍬 Code samples from the nanoFramework team used in testing, proof of concepts and other explorational endeavours
Version Downloads Last updated
1.12.0 66,548 3/30/2022
1.12.0-preview.19 1,405 3/17/2022
1.12.0-preview.18 1,267 3/14/2022
1.12.0-preview.9 2,567 2/17/2022
1.12.0-preview.5 3,063 1/28/2022
1.12.0-preview.1 1,067 1/20/2022
1.11.7 14,187 12/2/2021
1.11.7-preview.14 90 1/20/2022
1.11.6 272 12/2/2021
1.11.6-preview.2 689 11/30/2021
1.10.5 31,654 7/13/2021
1.10.5-preview.18 2,421 6/19/2021
1.10.5-preview.13 1,307 6/7/2021
1.10.5-preview.10 1,230 6/3/2021
1.10.5-preview.4 890 5/31/2021
1.10.4-preview.11 3,833 5/19/2021
1.10.4-preview.6 163 5/19/2021
1.10.4-preview.4 626 5/13/2021
1.10.3-preview.20 921 5/4/2021
1.10.3-preview.7 3,339 3/21/2021
1.10.1-preview.11 1,882 3/2/2021
1.10.1-preview.9 3,775 1/6/2021
1.10.1-preview.7 1,225 12/29/2020
1.10.1-preview.6 322 12/28/2020
1.10.0-preview.4 1,576 12/7/2020
1.9.1-preview.6 3,108 10/20/2020
1.9.1-preview.4 348 10/20/2020
1.9.0-preview.11 213 10/20/2020
1.9.0-preview.5 2,096 9/30/2020
1.8.0-preview.11 283 9/30/2020
1.7.3 12,468 6/11/2020
1.7.3-preview.4 670 5/29/2020
1.7.2-preview.7 554 5/8/2020
1.7.2-preview.6 347 5/8/2020
1.7.2-preview.5 435 4/27/2020
1.7.2-preview.4 1,068 4/16/2020
1.7.1-preview.4 433 4/14/2020
1.7.0-preview.12 625 3/10/2020
1.7.0-preview.11 273 3/9/2020
1.7.0-preview.10 217 3/9/2020
1.7.0-preview.8 220 3/9/2020
1.7.0-preview.4 233 3/9/2020
1.7.0-preview.3 238 3/9/2020
1.7.0-preview.2 322 3/9/2020
1.7.0-preview.1 322 3/9/2020
1.6.0-preview.1 1,556 11/14/2019
1.5.1-preview.1 1,100 11/7/2019
1.5.0-preview.1 565 11/4/2019
1.4.1-preview.1 394 10/23/2019
1.4.0-preview.3 412 10/18/2019
1.3.0 4,520 10/16/2019
1.2.7 1,118 10/16/2019
1.2.6 2,832 10/15/2019
1.2.6-preview.16 971 7/17/2019
1.2.6-preview.14 262 7/17/2019
1.2.6-preview.12 242 7/17/2019
1.2.6-preview.10 435 7/11/2019
1.2.6-preview.7 700 6/23/2019
1.2.6-preview.1 501 6/20/2019
1.2.5-preview.1 673 6/12/2019
1.2.4-preview.1 384 6/12/2019
1.2.2-preview.20 361 6/11/2019
1.2.2-preview.5 289 6/12/2019
1.2.1-preview-013 517 6/11/2019
1.2.1-preview-001 3,909 4/26/2019
1.2.0 707 4/23/2019
1.1.2 616 4/23/2019
1.1.1 10,226 1/21/2019
1.1.0 6,689 12/14/2018
1.0.80 250 3/5/2021
1.0.67 230 3/3/2021
1.0.6-preview-027 528 12/14/2018
1.0.6-preview-021 2,410 12/5/2018
1.0.6-preview-010 2,446 11/19/2018
1.0.6-preview-001 2,456 11/7/2018
1.0.4 3,436 10/17/2018
1.0.1-preview127 1,793 10/9/2018
1.0.0-preview073 2,677 9/12/2018
1.0.0-preview062 2,183 8/7/2018
1.0.0-preview060 1,654 8/3/2018
1.0.0-preview054 1,916 6/16/2018
1.0.0-preview050 1,503 6/7/2018
1.0.0-preview049 1,542 5/28/2018
1.0.0-preview048 2,030 4/2/2018
1.0.0-preview043 2,274 1/3/2018
1.0.0-preview042 1,347 12/26/2017
1.0.0-preview038 1,493 12/6/2017
1.0.0-preview028 2,225 8/31/2017
1.0.0-preview027 1,300 8/30/2017
1.0.0-preview026 1,855 8/23/2017
1.0.0-preview025 1,096 8/23/2017
1.0.0-preview024 746 8/23/2017
1.0.0-preview023 1,040 8/18/2017
1.0.0-preview022 2,076 6/28/2017
1.0.0-preview021 728 6/28/2017
1.0.0-preview020 801 5/31/2017
1.0.0-preview019 797 5/31/2017
1.0.0-preview018 685 5/31/2017
1.0.0-preview016 913 5/13/2017
1.0.0-preview015 700 5/12/2017
1.0.0-preview014 748 5/9/2017
1.0.0-preview013 840 5/8/2017
1.0.0-preview012 780 5/5/2017
1.0.0-preview011 769 5/4/2017
1.0.0-preview010 709 5/4/2017