FluentValidation 7.5.1

Prefix Reserved
.NET Standard 1.1 This package targets .NET Standard 1.1. The package is compatible with this framework or higher. .NET Framework 4.5 This package targets .NET Framework 4.5. 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There is a newer version of this package available.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 7.5.1                

                    
                

            
NuGet\Install-Package FluentValidation -Version 7.5.1
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="7.5.1" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
paket add FluentValidation --version 7.5.1                

                    
                

            
#r "nuget: FluentValidation, 7.5.1"
#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=7.5.1

// Install FluentValidation as a Cake Tool
#tool nuget:?package=FluentValidation&version=7.5.1

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 was computed.  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 netcoreapp1.0 was computed.  netcoreapp1.1 was computed.  netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard1.1 is compatible.  netstandard1.2 was computed.  netstandard1.3 was computed.  netstandard1.4 was computed.  netstandard1.5 was computed.  netstandard1.6 is compatible.  netstandard2.0 is compatible.  netstandard2.1 was computed. 
.NET Framework net45 is compatible.  net451 was computed.  net452 was computed.  net46 was computed.  net461 was computed.  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 tizen30 was computed.  tizen40 was computed.  tizen60 was computed. 
Universal Windows Platform uap was computed.  uap10.0 was computed. 
Windows Phone wpa81 was computed. 
Windows Store netcore was computed.  netcore45 was computed.  netcore451 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.

NuGet packages (2.3K)

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.
Reo.Core.Validation

Package Description

GitHub repositories (220)

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.
Radarr/Radarr
Movie organizer/manager for usenet and torrent users.
Version Downloads Last updated
11.11.0 490,080 11/16/2024
11.10.0 5,497,053 9/15/2024
11.9.2 12,692,995 6/10/2024
11.9.1 7,337,121 4/23/2024
11.9.0 21,207,829 12/21/2023
11.8.1 5,687,873 11/22/2023
11.8.0 6,841,898 10/19/2023
11.7.1 9,116,257 8/12/2023
11.7.0 106,533 8/11/2023
11.6.0 7,008,763 7/4/2023
11.5.2 15,663,629 4/7/2023
11.5.1 37,450,446 2/20/2023
11.5.0 2,169,034 2/13/2023
11.4.0 16,254,727 11/23/2022
11.3.0 3,054,693 11/10/2022
11.2.2 14,120,644 9/11/2022
11.2.1 20,156,054 8/28/2022
11.2.0 6,967,391 8/8/2022
11.1.1 573,906 8/6/2022
11.1.0 11,588,442 6/22/2022
11.0.3 3,105,248 6/10/2022
11.0.2 4,493,280 5/27/2022
11.0.1 6,007,047 5/7/2022
11.0.0 4,863,826 4/30/2022
10.4.0 17,860,913 3/11/2022
10.3.6 24,370,577 12/13/2021
10.3.5 2,981,610 11/30/2021
10.3.4 9,303,585 10/22/2021
10.3.3 10,936,171 8/24/2021
10.3.1 678,342 8/19/2021
10.3.0 7,729,708 7/9/2021
10.2.3 7,667,934 6/3/2021
10.2.2 428,553 6/1/2021
10.2.1 1,278,364 5/30/2021
10.2.0 347,684 5/28/2021
10.1.0 4,951,763 4/28/2021
10.0.4 3,981,500 4/17/2021
9.5.4 5,163,500 4/5/2021
9.5.3 3,836,523 3/15/2021
9.5.2 1,837,424 3/8/2021
9.5.1 6,402,432 2/11/2021
9.5.0 3,038,760 1/31/2021
9.4.0 2,905,238 1/14/2021
9.3.0 13,581,917 11/10/2020
9.3.0-preview3 37,537 10/19/2020
9.3.0-preview2 146,551 9/15/2020
9.3.0-preview1 13,036 8/26/2020
9.2.2 6,827,367 9/20/2020
9.2.1 27,314 9/19/2020
9.2.0 7,507,295 8/26/2020
9.1.3 997,592 8/19/2020
9.1.2 914,465 8/12/2020
9.1.1 650,221 8/8/2020
9.1.0 182,022 8/8/2020
9.0.1 5,170,129 7/14/2020
9.0.0-preview5 88,307 5/23/2020
9.0.0-preview4 140,401 4/22/2020
9.0.0-preview3 194,451 2/29/2020
9.0.0-preview2 32,137 2/21/2020
9.0.0-preview1 95,046 2/8/2020
8.6.3 6,391,020 8/28/2020
8.6.2 26,557,202 2/29/2020
8.6.1 12,059,136 12/28/2019
8.6.0 4,055,736 12/4/2019
8.5.1 3,675,247 11/2/2019
8.5.0 5,876,082 9/24/2019
8.5.0-preview5 67,254 9/1/2019
8.5.0-preview4 94,589 7/23/2019
8.5.0-preview3 31,494 7/10/2019
8.5.0-preview2 77,611 6/13/2019
8.5.0-preview1 58,847 5/10/2019
8.4.0 13,657,001 5/10/2019
8.3.0 3,853,912 4/24/2019
8.2.3 662,684 4/12/2019
8.2.2 990,778 4/5/2019
8.2.1 453,346 4/4/2019
8.2.0 1,036,223 3/26/2019
8.1.3 4,998,103 1/25/2019
8.1.2 2,281,231 12/18/2018
8.1.1 579,246 12/11/2018
8.1.0 685,465 12/6/2018
8.1.0-preview2 29,142 11/14/2018
8.1.0-preview1 27,593 10/14/2018
8.0.101 846,035 11/24/2018
8.0.100 3,819,547 9/4/2018
8.0.0 1,054,528 8/16/2018
8.0.0-rc1 52,678 7/24/2018
8.0.0-preview4 25,577 7/16/2018
8.0.0-preview3 24,093 7/13/2018
8.0.0-preview2 23,874 7/13/2018
7.6.105 1,585,393 8/11/2018
7.6.104 2,707,244 7/6/2018
7.6.103 1,256,857 6/16/2018
7.6.102 316,038 6/14/2018
7.6.101 75,639 6/13/2018
7.6.100 170,525 6/7/2018
7.6.0 386,852 6/1/2018
7.6.0-preview1 48,900 4/12/2018
7.5.2 3,748,397 3/16/2018
7.5.1 260,364 3/11/2018
7.5.0 733,329 2/26/2018
7.4.0 1,892,677 1/26/2018
7.3.4 1,042,349 1/2/2018
7.3.3 184,122 12/22/2017
7.3.2 71,727 12/21/2017
7.3.1 325,335 12/13/2017
7.3.0 101,865 12/13/2017
7.3.0-beta3 27,963 12/8/2017
7.3.0-beta2 45,644 11/20/2017
7.3.0-beta1 24,908 11/11/2017
7.2.1 2,757,360 10/24/2017
7.2.0 801,319 10/5/2017
7.2.0-beta3 41,303 9/5/2017
7.2.0-beta2 27,103 8/22/2017
7.2.0-beta1 23,353 8/19/2017
7.1.1 2,011,919 7/25/2017
7.1.0 542,878 6/28/2017
7.1.0-beta1 23,119 6/24/2017
7.0.3 735,993 6/7/2017
7.0.2 279,204 5/26/2017
7.0.1 83,048 5/23/2017
7.0.0 642,892 5/19/2017
7.0.0-beta3 27,721 5/1/2017
7.0.0-beta2 26,794 4/17/2017
7.0.0-beta1 24,356 4/7/2017
6.4.1 1,765,528 3/15/2017
6.4.1-beta1 23,484 3/13/2017
6.4.0 903,036 3/3/2017
6.4.0-rc4 146,065 2/13/2017
6.4.0-rc3 39,161 2/3/2017
6.4.0-rc2 39,460 1/30/2017
6.4.0-rc1 23,252 1/30/2017
6.4.0-beta9 90,626 11/21/2016
6.4.0-beta8 50,255 10/31/2016
6.4.0-beta7 23,867 10/28/2016
6.4.0-beta6 24,173 10/25/2016
6.4.0-beta5 23,788 10/24/2016
6.4.0-beta4 23,905 10/21/2016
6.4.0-beta3 70,689 7/4/2016
6.4.0-beta2 24,774 7/1/2016
6.4.0-beta10 22,989 1/30/2017
6.4.0-beta1 28,081 6/28/2016
6.3.4-alpha 404,675 6/1/2016
6.3.3-alpha 22,805 5/27/2016
6.2.1 4,999,154 2/26/2016
6.2.1-beta1 28,217 2/24/2016
6.2.0 161,790 2/22/2016
6.2.0-beta1 24,075 2/12/2016
6.1.0 404,307 1/18/2016
6.0.2 113,043 1/5/2016
6.0.1 38,827 1/5/2016
6.0.0 124,863 12/22/2015
5.6.2 1,463,466 5/29/2015
5.6.1 33,865 5/29/2015
5.5.0 1,149,933 10/31/2014
5.4.0 587,268 7/3/2014
5.3.0 102,477 5/27/2014
5.2.0 74,065 5/21/2014
5.1.0 971,423 3/11/2014
5.0.0.1 493,027 10/24/2013
4.0.0.1 285,896 7/18/2013
4.0.0 113,252 4/29/2013
3.4.6 395,939 8/30/2012
3.4.0 66,511 8/17/2012
3.3.1 84,825 3/30/2012
3.2.0 72,547 11/14/2011
3.1.0 52,410 7/30/2011
3.0.0.1 25,940 7/5/2011
3.0.0 43,374 6/25/2011
2.0.0 72,058 1/9/2011
1.3.0 243,921 1/7/2011

Changes in 7.5.1:
* Resolved issues with referencing FluentValidation from legacy PCLs.
* Added support for CustomizeValidatorAttribute to the legacy WebApi integration for consistency with MVC5 and AspNetCore.

Changes in 7.5:
* Better handling of clientside messages when using custom overriden language resources
* Added flag in the ValidationContext's RootDataContext when a validator is invoked by the automatic MVC/WebApi integration
* Improvements to some of the validation tester's messages
* Added Transform method to transform property values prior to validation
* Improve support for DisplayAttribute / DisplayNameAttribute when inferring property display name
* New language translations (Slovak/Hebrew/Brazilian Portuguese)
* Cache display names by default
* Ensure ShouldHaveChildValidator test method works with model-level rules
* Removed netstandard1.0 support. Supported platforms are now netstandard1.1, netstandard2.0 and net45.

Changes in 7.4:
* Improved syntax for DependentRules
* ValidationException serialization support when running on full framework
* Added ComparisonProperty placeholder to some validators
* The Test Helper now correctly handles read-only properties
* Add CancellationToken support to ValidateAndThrowAsync and various ValidateAsync overloads
* Improved functionality for custom MessageBuilders
* Updated AspNetCore integration to MVC version 2.0.2
* Update MVC5 AddToModelState extension not to overwrite existing attempted values
* Added SetRulesetForClientsideMessages method for MVC5/AspNetCore as an alternative to using the RulesetForClientSideMessagesAttribute

Changes in 7.3:
* Major changes to AspNetCore integration including better support for collections and implicit validation (opt-in)
* Fix - Updated EnumValidator's Flags support to handle the ~0 value
* Fix - TestHelper checking for child validator would respond with the wrong type
* Fix - Updated translations for some validators
* Fix - Overload of WithName that takes a lambda generated an exception
* Added versions of WhenAsync and UnlessAsync that support CancellationTokens
* Simplify calls to DependentRules
* Add Skip property to CustomizeValidatorAttribute in the ASP.NET Core integration

Changes in 7.2:
* Updated AspNetCore integration to support IValidatableObject
* Updated AspNetCore integration to allow mixing multiple validation strategies in the same model
* Updated AspNetCore integration to support RulesetForClientsideMessagesAttribute
* Fix - Property names were not generated properly for nested types when using AddFailure inside a Custom validator
* Fix - NullReferenceException when using CustomAsync but the validator is invoked synchronously
* Fix - Clientside integration in AspNetCore being resolved from the root-level service provider
* Fix - Allow empty string to be passed to OverridePropertyName

Changes in 7.1.1:
* Fix - Incorrect property name was generated when using RuleForEach combined with SetValidator
* Fix - Nesting async validators inside DependentRules didn't wait for completion

Changes in 7.1:
* New RuleFor().Custom() method as a replacement for the old, deprecated Custom method
* Improved messages in the ShouldHaveChildValidator test extension
* Test helper works with nested properties
* Additional overload of WithState allows access to collection item when used with RuleForEach
* Fix - Wrong values were generated as part of the MVC5 clientside integration for MinLength and MaxLength validators
* Fix - AssemblyScanner now excludes abstract and generic types
* Fix - InvalidCastException when using lazy WithMessage combined with RuleForEach
* WithState enhanced to allow access to the ValidationContext

Changes in 7.0:

7.0 is a major release that contains several breaking changes, especially with Localization. If you use FluentValidation's support for localization please read the updated documentation: https://github.com/JeremySkinner/FluentValidation/wiki/f.-Localization

* Localization rewrite to not require satellite assemblies
* New 'Custom' rule method replaces the root-level Custom method
* Switch to Netstandard based build process
* Assemblies are now signed / strongly named - see https://github.com/JeremySkinner/FluentValidation/wiki/l.-Strong-naming-and-signed-packages
* Fix - Possible NullReferenceException in the AspNetCore clientside integration for length validators
* Fix - Don't clear the ModelValidatorProviders collection by default in the AspNetCore integration (added new ClearValidatorProviders property to control this behaviour)
* Fix - Ensure IValidatorFactory is resolved from request scope in asp.net core integration
* Fix - Property getter that throws an exception causes validation to fail in WebApi integration
* Fix - Issue in AspNetCore integration where we tried to resolve a collection validator in some situations where a class validator should be used
* Fix - Incorrect clientside validation attributes generated for email validator and credit card validator in the asp.net core integration
* Fix - Child model validation now works in webapi integration
* Improve splitting of PascalCased property names to support uppercase character sequences
* ValidationResult.ErrorCode property now always returns the type of the PropertyValidator that generated the message, unless it's been explicitly overriden

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