FluentValidation 7.5.2

.NET Standard 1.1 .NET Framework 4.5
There is a newer version of this package available.
See the version list below for details. 
dotnet add package FluentValidation --version 7.5.2
NuGet\Install-Package FluentValidation -Version 7.5.2
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="7.5.2" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
paket add FluentValidation --version 7.5.2
#r "nuget: FluentValidation, 7.5.2"
#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 FluentValidation as a Cake Addin
#addin nuget:?package=FluentValidation&version=7.5.2

// Install FluentValidation as a Cake Tool
#tool nuget:?package=FluentValidation&version=7.5.2

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

Product Versions
.NET net5.0 net5.0-windows net6.0 net6.0-android net6.0-ios net6.0-maccatalyst net6.0-macos net6.0-tvos net6.0-windows
.NET Core netcoreapp1.0 netcoreapp1.1 netcoreapp2.0 netcoreapp2.1 netcoreapp2.2 netcoreapp3.0 netcoreapp3.1
.NET Standard netstandard1.1 netstandard1.2 netstandard1.3 netstandard1.4 netstandard1.5 netstandard1.6 netstandard2.0 netstandard2.1
.NET Framework net45 net451 net452 net46 net461 net462 net463 net47 net471 net472 net48
MonoAndroid monoandroid
MonoMac monomac
MonoTouch monotouch
Tizen tizen30 tizen40 tizen60
Universal Windows Platform uap uap10.0
Windows Phone wpa81
Windows Store netcore netcore45 netcore451
Xamarin.iOS xamarinios
Xamarin.Mac xamarinmac
Xamarin.TVOS xamarintvos
Xamarin.WatchOS xamarinwatchos
Compatible target framework(s)
Additional computed target framework(s)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (1.4K)

Showing the top 5 NuGet packages that depend on FluentValidation:

Package Downloads
FluentValidation.DependencyInjectionExtensions The ID prefix of this package has been reserved for one of the owners of this package by NuGet.org.

Dependency injection extensions for FluentValidation
FluentValidation.AspNetCore The ID prefix of this package has been reserved for one of the owners of this package by NuGet.org.

AspNetCore integration for FluentValidation
MicroElements.Swashbuckle.FluentValidation The ID prefix of this package has been reserved for one of the owners of this package by NuGet.org.

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

Ocelot is an API Gateway. The project is aimed at people using .NET running a micro services / service orientated architecture that need a unified point of entry into their system. In particular I want easy integration with IdentityServer reference and bearer tokens. reference tokens. Ocelot is a bunch of middlewares in a specific order. Ocelot manipulates the HttpRequest object into a state specified by its configuration until it reaches a request builder middleware where it creates a HttpRequestMessage object which is used to make a request to a downstream service. The middleware that makes the request is the last thing in the Ocelot pipeline. It does not call the next middleware. The response from the downstream service is stored in a per request scoped repository and retrived as the requests goes back up the Ocelot pipeline. There is a piece of middleware that maps the HttpResponseMessage onto the HttpResponse object and that is returned to the client. That is basically it with a bunch of other features.
FluentValidation.WebAPI The ID prefix of this package has been reserved for one of the owners of this package by NuGet.org.

ASP.NET WebApi integration for FluentValidation

GitHub repositories (152)

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

Repository Stars
aspnetboilerplate/aspnetboilerplate
ASP.NET Boilerplate - Web Application Framework
abpframework/abp
Open Source Web Application Framework for ASP.NET Core
dotnet-architecture/eShopOnWeb
Sample ASP.NET Core 6.0 reference application, powered by Microsoft, demonstrating a layered application architecture with monolithic deployment model. Download the eBook PDF from docs folder.
Sonarr/Sonarr
Smart PVR for newsgroup and bittorrent users.
kgrzybek/modular-monolith-with-ddd
Full Modular Monolith application with Domain-Driven Design approach.
Version Downloads Last updated
11.4.0 13,669 11/23/2022
11.3.0 204,613 11/10/2022
11.2.2 2,141,148 9/11/2022
11.2.1 1,769,751 8/28/2022
11.2.0 1,738,906 8/8/2022
11.1.1 90,527 8/6/2022
11.1.0 3,403,413 6/22/2022
11.0.3 916,603 6/10/2022
11.0.2 1,342,063 5/27/2022
11.0.1 1,935,742 5/7/2022
11.0.0 790,956 4/30/2022
10.4.0 6,274,671 3/11/2022
10.3.6 10,149,334 12/13/2021
10.3.5 1,484,278 11/30/2021
10.3.4 4,416,646 10/22/2021
10.3.3 5,975,658 8/24/2021
10.3.1 421,512 8/19/2021
10.3.0 4,334,557 7/9/2021
10.2.3 4,528,277 6/3/2021
10.2.2 276,515 6/1/2021
10.2.1 701,039 5/30/2021
10.2.0 165,745 5/28/2021
10.1.0 3,100,469 4/28/2021
10.0.4 2,154,219 4/17/2021
9.5.4 2,058,531 4/5/2021
9.5.3 2,622,652 3/15/2021
9.5.2 1,187,289 3/8/2021
9.5.1 4,026,883 2/11/2021
9.5.0 1,920,143 1/31/2021
9.4.0 1,997,578 1/14/2021
9.3.0 8,837,650 11/10/2020
9.3.0-preview3 26,512 10/19/2020
9.3.0-preview2 119,514 9/15/2020
9.3.0-preview1 9,135 8/26/2020
9.2.2 4,839,250 9/20/2020
9.2.1 16,014 9/19/2020
9.2.0 5,375,130 8/26/2020
9.1.3 787,670 8/19/2020
9.1.2 634,258 8/12/2020
9.1.1 494,619 8/8/2020
9.1.0 38,495 8/8/2020
9.0.1 3,295,313 7/14/2020
9.0.0-preview5 71,205 5/23/2020
9.0.0-preview4 109,324 4/22/2020
9.0.0-preview3 142,842 2/29/2020
9.0.0-preview2 27,379 2/21/2020
9.0.0-preview1 72,091 2/8/2020
8.6.3 2,976,187 8/28/2020
8.6.2 18,272,729 2/29/2020
8.6.1 8,685,657 12/28/2019
8.6.0 3,132,895 12/4/2019
8.5.1 2,905,310 11/2/2019
8.5.0 4,101,998 9/24/2019
8.5.0-preview5 56,403 9/1/2019
8.5.0-preview4 80,005 7/23/2019
8.5.0-preview3 26,935 7/10/2019
8.5.0-preview2 53,821 6/13/2019
8.5.0-preview1 48,406 5/10/2019
8.4.0 10,411,929 5/10/2019
8.3.0 2,667,875 4/24/2019
8.2.3 520,064 4/12/2019
8.2.2 739,607 4/5/2019
8.2.1 321,949 4/4/2019
8.2.0 805,884 3/26/2019
8.1.3 4,147,848 1/25/2019
8.1.2 1,847,015 12/18/2018
8.1.1 501,723 12/11/2018
8.1.0 421,122 12/6/2018
8.1.0-preview2 26,906 11/14/2018
8.1.0-preview1 25,701 10/14/2018
8.0.101 624,578 11/24/2018
8.0.100 3,111,487 9/4/2018
8.0.0 788,027 8/16/2018
8.0.0-rc1 45,574 7/24/2018
8.0.0-preview4 22,620 7/16/2018
8.0.0-preview3 21,306 7/13/2018
8.0.0-preview2 21,093 7/13/2018
7.6.105 1,053,660 8/11/2018
7.6.104 2,114,368 7/6/2018
7.6.103 1,005,724 6/16/2018
7.6.102 220,681 6/14/2018
7.6.101 67,091 6/13/2018
7.6.100 148,830 6/7/2018
7.6.0 314,056 6/1/2018
7.6.0-preview1 39,445 4/12/2018
7.5.2 2,796,683 3/16/2018
7.5.1 193,460 3/11/2018
7.5.0 653,310 2/26/2018
7.4.0 1,107,323 1/26/2018
7.3.4 882,237 1/2/2018
7.3.3 161,691 12/22/2017
7.3.2 56,105 12/21/2017
7.3.1 263,869 12/13/2017
7.3.0 48,727 12/13/2017
7.3.0-beta3 25,724 12/8/2017
7.3.0-beta2 40,284 11/20/2017
7.3.0-beta1 22,691 11/11/2017
7.2.1 2,111,099 10/24/2017
7.2.0 679,185 10/5/2017
7.2.0-beta3 38,829 9/5/2017
7.2.0-beta2 24,640 8/22/2017
7.2.0-beta1 21,145 8/19/2017
7.1.1 1,488,202 7/25/2017
7.1.0 435,559 6/28/2017
7.1.0-beta1 20,952 6/24/2017
7.0.3 655,386 6/7/2017
7.0.2 230,926 5/26/2017
7.0.1 62,299 5/23/2017
7.0.0 405,305 5/19/2017
7.0.0-beta3 25,114 5/1/2017
7.0.0-beta2 24,633 4/17/2017
7.0.0-beta1 22,143 4/7/2017
6.4.1 1,132,248 3/15/2017
6.4.1-beta1 21,877 3/13/2017
6.4.0 709,928 3/3/2017
6.4.0-rc4 143,509 2/13/2017
6.4.0-rc3 33,835 2/3/2017
6.4.0-rc2 37,210 1/30/2017
6.4.0-rc1 21,003 1/30/2017
6.4.0-beta9 85,985 11/21/2016
6.4.0-beta8 47,899 10/31/2016
6.4.0-beta7 21,562 10/28/2016
6.4.0-beta6 21,980 10/25/2016
6.4.0-beta5 21,665 10/24/2016
6.4.0-beta4 21,695 10/21/2016
6.4.0-beta3 66,785 7/4/2016
6.4.0-beta2 22,561 7/1/2016
6.4.0-beta10 20,853 1/30/2017
6.4.0-beta1 24,805 6/28/2016
6.3.4-alpha 341,118 6/1/2016
6.3.3-alpha 21,239 5/27/2016
6.2.1 3,354,452 2/26/2016
6.2.1-beta1 25,376 2/24/2016
6.2.0 119,901 2/22/2016
6.2.0-beta1 21,375 2/12/2016
6.1.0 325,799 1/18/2016
6.0.2 98,615 1/5/2016
6.0.1 34,602 1/5/2016
6.0.0 92,474 12/22/2015
5.6.2 1,095,302 5/29/2015
5.6.1 29,107 5/29/2015
5.5.0 870,817 10/31/2014
5.4.0 497,872 7/3/2014
5.3.0 88,887 5/27/2014
5.2.0 62,347 5/21/2014
5.1.0 633,998 3/11/2014
5.0.0.1 318,559 10/24/2013
4.0.0.1 224,060 7/18/2013
4.0.0 95,538 4/29/2013
3.4.6 308,499 8/30/2012
3.4.0 57,446 8/17/2012
3.3.1 55,477 3/30/2012
3.2.0 62,462 11/14/2011
3.1.0 49,406 7/30/2011
3.0.0.1 23,825 7/5/2011
3.0.0 33,199 6/25/2011
2.0.0 52,526 1/9/2011
1.3.0 95,568 1/7/2011

Changes in 7.5.2:
* RuleSet method can now take multiple ruleset names by usinga comma-separated string.
* Make setters on ValidationFailure's properties public to allow for easier deserialization.
* Additional overload for OverridePropertyName that takes an expression.
* Add overload of Include that takes a func to lazily create the inner validator.
* Make error code resolution pluggable using ValidatorOptions.ErrorCodeResolver
       
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