FluentValidation 9.4.0

Prefix Reserved
.NET 5.0 This package targets .NET 5.0. The package is compatible with this framework or higher. .NET Standard 2.0 This package targets .NET Standard 2.0. The package is compatible with this framework or higher. .NET Framework 4.6.1 This package targets .NET Framework 4.6.1. The package is compatible with this framework or higher.
There is a newer version of this package available.
See the version list below for details. 
dotnet add package FluentValidation --version 9.4.0                

                    
                

            
NuGet\Install-Package FluentValidation -Version 9.4.0
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. 
<PackageReference Include="FluentValidation" Version="9.4.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
paket add FluentValidation --version 9.4.0                

                    
                

            
#r "nuget: FluentValidation, 9.4.0"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
// Install FluentValidation as a Cake Addin
#addin nuget:?package=FluentValidation&version=9.4.0

// Install FluentValidation as a Cake Tool
#tool nuget:?package=FluentValidation&version=9.4.0

A validation library for .NET that uses a fluent interface to construct strongly-typed validation rules.

Product Compatible and additional computed target framework versions.
.NET net5.0 is compatible.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
.NET Core netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 was computed. 
.NET Framework net461 is compatible.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

  • .NETFramework 4.6.1

    • No dependencies.

  • .NETStandard 2.0

    • No dependencies.

  • net5.0

    • No dependencies.

NuGet packages (2.1K)

Showing the top 5 NuGet packages that depend on FluentValidation:

Package Downloads
FluentValidation.DependencyInjectionExtensions

Dependency injection extensions for FluentValidation
FluentValidation.AspNetCore

AspNetCore integration for FluentValidation
MicroElements.Swashbuckle.FluentValidation

Swagger ISchemaFilter that uses FluentValidation validators instead System.ComponentModel based attributes.
Ocelot

Ocelot is an API gateway based on .NET stack.
FluentValidation.WebAPI

ASP.NET WebApi integration for FluentValidation

GitHub repositories (200)

Showing the top 5 popular GitHub repositories that depend on FluentValidation:

Repository Stars
abpframework/abp
Open-source web application framework for ASP.NET Core! Offers an opinionated architecture to build enterprise software solutions with best practices on top of the .NET. Provides the fundamental infrastructure, cross-cutting-concern implementations, startup templates, application modules, UI themes, tooling and documentation.
aspnetboilerplate/aspnetboilerplate
ASP.NET Boilerplate - Web Application Framework
kgrzybek/modular-monolith-with-ddd
Full Modular Monolith application with Domain-Driven Design approach.
Sonarr/Sonarr
Smart PVR for newsgroup and bittorrent users.
dotnet-architecture/eShopOnWeb
Sample ASP.NET Core 8.0 reference application, powered by Microsoft, demonstrating a layered application architecture with monolithic deployment model. Download the eBook PDF from docs folder.
Version Downloads Last updated
11.9.2 2,280,615 6/10/2024
11.9.1 3,842,175 4/23/2024
11.9.0 14,900,185 12/21/2023
11.8.1 4,049,208 11/22/2023
11.8.0 5,265,466 10/19/2023
11.7.1 7,745,464 8/12/2023
11.7.0 98,449 8/11/2023
11.6.0 6,030,402 7/4/2023
11.5.2 13,692,593 4/7/2023
11.5.1 27,212,231 2/20/2023
11.5.0 1,835,998 2/13/2023
11.4.0 14,514,314 11/23/2022
11.3.0 2,724,119 11/10/2022
11.2.2 12,741,778 9/11/2022
11.2.1 18,372,437 8/28/2022
11.2.0 6,505,583 8/8/2022
11.1.1 522,814 8/6/2022
11.1.0 10,608,835 6/22/2022
11.0.3 2,830,907 6/10/2022
11.0.2 4,056,498 5/27/2022
11.0.1 5,556,318 5/7/2022
11.0.0 4,108,489 4/30/2022
10.4.0 16,400,244 3/11/2022
10.3.6 22,779,564 12/13/2021
10.3.5 2,829,034 11/30/2021
10.3.4 8,690,119 10/22/2021
10.3.3 10,383,085 8/24/2021
10.3.1 646,763 8/19/2021
10.3.0 7,299,323 7/9/2021
10.2.3 7,229,448 6/3/2021
10.2.2 414,135 6/1/2021
10.2.1 1,221,255 5/30/2021
10.2.0 322,349 5/28/2021
10.1.0 4,682,231 4/28/2021
10.0.4 3,795,944 4/17/2021
9.5.4 4,510,263 4/5/2021
9.5.3 3,701,886 3/15/2021
9.5.2 1,739,815 3/8/2021
9.5.1 6,158,501 2/11/2021
9.5.0 2,865,061 1/31/2021
9.4.0 2,795,254 1/14/2021
9.3.0 12,823,003 11/10/2020
9.3.0-preview3 36,192 10/19/2020
9.3.0-preview2 142,955 9/15/2020
9.3.0-preview1 12,779 8/26/2020
9.2.2 6,573,545 9/20/2020
9.2.1 25,672 9/19/2020
9.2.0 7,269,380 8/26/2020
9.1.3 977,601 8/19/2020
9.1.2 884,869 8/12/2020
9.1.1 634,272 8/8/2020
9.1.0 146,233 8/8/2020
9.0.1 4,971,803 7/14/2020
9.0.0-preview5 86,730 5/23/2020
9.0.0-preview4 137,070 4/22/2020
9.0.0-preview3 188,199 2/29/2020
9.0.0-preview2 31,555 2/21/2020
9.0.0-preview1 92,364 2/8/2020
8.6.3 5,811,697 8/28/2020
8.6.2 25,379,811 2/29/2020
8.6.1 11,605,783 12/28/2019
8.6.0 3,918,194 12/4/2019
8.5.1 3,570,168 11/2/2019
8.5.0 5,566,374 9/24/2019
8.5.0-preview5 66,023 9/1/2019
8.5.0-preview4 92,176 7/23/2019
8.5.0-preview3 30,898 7/10/2019
8.5.0-preview2 73,476 6/13/2019
8.5.0-preview1 57,110 5/10/2019
8.4.0 13,114,004 5/10/2019
8.3.0 3,722,548 4/24/2019
8.2.3 637,911 4/12/2019
8.2.2 954,553 4/5/2019
8.2.1 431,358 4/4/2019
8.2.0 1,008,742 3/26/2019
8.1.3 4,894,460 1/25/2019
8.1.2 2,217,688 12/18/2018
8.1.1 556,875 12/11/2018
8.1.0 620,768 12/6/2018
8.1.0-preview2 29,050 11/14/2018
8.1.0-preview1 27,488 10/14/2018
8.0.101 803,661 11/24/2018
8.0.100 3,711,437 9/4/2018
8.0.0 1,015,919 8/16/2018
8.0.0-rc1 51,965 7/24/2018
8.0.0-preview4 25,407 7/16/2018
8.0.0-preview3 23,947 7/13/2018
8.0.0-preview2 23,763 7/13/2018
7.6.105 1,481,943 8/11/2018
7.6.104 2,650,168 7/6/2018
7.6.103 1,226,363 6/16/2018
7.6.102 298,757 6/14/2018
7.6.101 74,703 6/13/2018
7.6.100 166,109 6/7/2018
7.6.0 376,120 6/1/2018
7.6.0-preview1 47,341 4/12/2018
7.5.2 3,627,750 3/16/2018
7.5.1 251,367 3/11/2018
7.5.0 721,376 2/26/2018
7.4.0 1,710,117 1/26/2018
7.3.4 1,013,989 1/2/2018
7.3.3 180,888 12/22/2017
7.3.2 70,021 12/21/2017
7.3.1 315,722 12/13/2017
7.3.0 88,248 12/13/2017
7.3.0-beta3 27,822 12/8/2017
7.3.0-beta2 44,926 11/20/2017
7.3.0-beta1 24,788 11/11/2017
7.2.1 2,667,449 10/24/2017
7.2.0 782,186 10/5/2017
7.2.0-beta3 41,127 9/5/2017
7.2.0-beta2 26,977 8/22/2017
7.2.0-beta1 23,248 8/19/2017
7.1.1 1,895,961 7/25/2017
7.1.0 533,371 6/28/2017
7.1.0-beta1 23,023 6/24/2017
7.0.3 725,619 6/7/2017
7.0.2 274,066 5/26/2017
7.0.1 79,168 5/23/2017
7.0.0 583,605 5/19/2017
7.0.0-beta3 27,543 5/1/2017
7.0.0-beta2 26,692 4/17/2017
7.0.0-beta1 24,258 4/7/2017
6.4.1 1,639,069 3/15/2017
6.4.1-beta1 23,387 3/13/2017
6.4.0 865,631 3/3/2017
6.4.0-rc4 145,938 2/13/2017
6.4.0-rc3 38,896 2/3/2017
6.4.0-rc2 39,358 1/30/2017
6.4.0-rc1 23,151 1/30/2017
6.4.0-beta9 90,232 11/21/2016
6.4.0-beta8 50,132 10/31/2016
6.4.0-beta7 23,770 10/28/2016
6.4.0-beta6 24,069 10/25/2016
6.4.0-beta5 23,706 10/24/2016
6.4.0-beta4 23,808 10/21/2016
6.4.0-beta3 70,438 7/4/2016
6.4.0-beta2 24,685 7/1/2016
6.4.0-beta10 22,905 1/30/2017
6.4.0-beta1 27,957 6/28/2016
6.3.4-alpha 397,293 6/1/2016
6.3.3-alpha 22,722 5/27/2016
6.2.1 4,784,480 2/26/2016
6.2.1-beta1 28,110 2/24/2016
6.2.0 156,541 2/22/2016
6.2.0-beta1 23,955 2/12/2016
6.1.0 395,501 1/18/2016
6.0.2 111,006 1/5/2016
6.0.1 38,542 1/5/2016
6.0.0 121,675 12/22/2015
5.6.2 1,398,950 5/29/2015
5.6.1 33,572 5/29/2015
5.5.0 1,108,125 10/31/2014
5.4.0 573,046 7/3/2014
5.3.0 101,043 5/27/2014
5.2.0 72,847 5/21/2014
5.1.0 927,156 3/11/2014
5.0.0.1 463,428 10/24/2013
4.0.0.1 277,282 7/18/2013
4.0.0 108,440 4/29/2013
3.4.6 382,873 8/30/2012
3.4.0 64,559 8/17/2012
3.3.1 80,732 3/30/2012
3.2.0 71,193 11/14/2011
3.1.0 52,149 7/30/2011
3.0.0.1 25,835 7/5/2011
3.0.0 41,672 6/25/2011
2.0.0 68,148 1/9/2011
1.3.0 197,560 1/7/2011

FluentValidation 9 is a major release. Please read the upgrade notes at https://docs.fluentvalidation.net/en/latest/upgrading-to-9.html

Changes in 9.4.0:
* ChildRules now work as expected when inside a ruleset
* Added ImplicitlyValidateRootCollectionElements option to MVC integration

Changes in 9.3.0:
* Improvements to LanguageManager's lazy loading of resources.
* Deprecate IStringSource and its implementors. Use delegates instead.
* CustomizeValidatorAttribute now works in Razor pages (netcore 3.1 and net 5.0 only)
* RuleSetForClientSideMessagesAttribute now works in Razor pages (netcore 3.1 and net 5.0 only)
* Fixes to Spanish language translations.

Changes in 9.2.2:
* Fix one of the inheritance validator overloads not working correctly.

Changes in 9.2.1:
* Add non-generic Add method to inheritance validator.
* Updates to Persian translations.
* Added Bengali translations.

Changes in 9.2.0:
* Add inheritance validator
* Performance improvements

Changes in 9.1.3:
* Fix an issue with IncludeRulesNotInRuleSet not working correctly

Changes in 9.1.2:
* Make the ValidationContext.ThrowOnFailures getter public.

Changes in 9.1.1:
* Fix an incorrect deprecation message.

Changes in 9.1:
* Make ruleset separator character splitting consistent
* Transform now works with RuleForEach
* Introduce constants for rulesets
* Resolve issue when attempting to use asynchronous conditions in a synchornous validaiton run
* Added asynchronous versions of the TestHelper methods.
* Introduce CascadeMode.Stop and deprecate CascadeMode.StopOnFirstFailure to resolve confusion/abiguity about setting the cascade mode at validator-level (#1437)
* RaiseValidationException can be overridden to customize the exception throwing process
* Add new Validate extension methods that allow options to be configured using a strategy

Changes in 9.0.0:
* Removed support for netstandard1.1 and netstandard1.6
* Removed support for end-of-life .NET Core versions (2.2 and 3.0). LTS versions are supported (2.1 and 3.1)
* Default email validation mode now uses the same logic as ASP.NET Core. Previous regex behaviour is opt-in.
* TestHelper advanced mode now has more features (see https://docs.fluentvalidation.net/en/latest/testing.html#advanced-test-extensions)
* Equal/NotEqual now perform ordinal comparison when used with string properties
* Severity can now be set dynamically with a callback
* Removed WithLocalizedMessage (WithMessage that takes a callback is the replacement)
* Removed ResourceName from ValidationFailure
* Removed ResourceName and ResourceType from IStringSource.
* Removed SetCollectionValidator which was deprecated in 8.0
* Additional overload of OnAnyFailure that can receive a collection of validation failures
* Remove DisplayAttribute integration and reference to DataAnnotations.
* ComparisonProperty placeholder is now formatted like PropertyName
* Translations of default error messages into other languages are now lazily-loaded
* Added Slovenian translations of default error messages.
* Added Icelandic translations of default error messages.
* Added WithMessageArgument to the test helpers.
* Add additional overload of SetValidator that takes a Func that receives the current property value.
* ASP.NET Core: FluentValidationModelValidatorProvider and FluentValidationModelValidator are now public.
* Work around a bug in ASP.NET Core's integration testing components that can cause ConfigureServices to run multiple times.
* SourceLink integration.
* {CollectionIndex} placeholder can now be accessed in child validators.
* Additional ValidationException constructor that allows using both the default message and a custom one together.
* ScalePrecisionValidator algorithm now matches SQL Server.
* Additional overload of the When methods that contain the validation context.
* Automatically scanned types can be excluded when calling RegisterValidatorsFromAssemblyContaining in ASP.NET Core projects.
* New AutomaticValidationEnabled property for use in ASP.NET Core projects (defaults to true).

Full release notes can be found at https://github.com/FluentValidation/FluentValidation/blob/master/Changelog.txt