FluentValidation 9.3.0-preview3
Prefix ReservedSee the version list below for details.
dotnet add package FluentValidation --version 9.3.0-preview3
NuGet\Install-Package FluentValidation -Version 9.3.0-preview3
<PackageReference Include="FluentValidation" Version="9.3.0-preview3" />
<PackageVersion Include="FluentValidation" Version="9.3.0-preview3" />
<PackageReference Include="FluentValidation" />
paket add FluentValidation --version 9.3.0-preview3
#r "nuget: FluentValidation, 9.3.0-preview3"
#:package FluentValidation@9.3.0-preview3
#addin nuget:?package=FluentValidation&version=9.3.0-preview3&prerelease
#tool nuget:?package=FluentValidation&version=9.3.0-preview3&prerelease
A validation library for .NET that uses a fluent interface to construct strongly-typed validation rules.
| Product | Versions 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. net9.0 was computed. net9.0-android was computed. net9.0-browser was computed. net9.0-ios was computed. net9.0-maccatalyst was computed. net9.0-macos was computed. net9.0-tvos was computed. net9.0-windows was computed. net10.0 was computed. net10.0-android was computed. net10.0-browser was computed. net10.0-ios was computed. net10.0-maccatalyst was computed. net10.0-macos was computed. net10.0-tvos was computed. net10.0-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. |
-
.NETFramework 4.6.1
- No dependencies.
-
.NETStandard 2.0
- No dependencies.
-
net5.0
- No dependencies.
NuGet packages (2.8K)
Showing the top 5 NuGet packages that depend on FluentValidation:
| Package | Downloads |
|---|---|
|
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation |
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FluentValidation.AspNetCore
AspNetCore integration for FluentValidation |
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Ocelot
Ocelot is an API gateway based on .NET stack. |
|
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Reo.Core.Validation
Package Description |
|
|
Reo.Core.DataModels
Package Description |
GitHub repositories (253)
Showing the top 20 popular GitHub repositories that depend on FluentValidation:
| Repository | Stars |
|---|---|
|
ardalis/CleanArchitecture
Clean Architecture Solution Template: A proven Clean Architecture Template for ASP.NET Core 9
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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.
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kgrzybek/modular-monolith-with-ddd
Full Modular Monolith application with Domain-Driven Design approach.
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Sonarr/Sonarr
Smart PVR for newsgroup and bittorrent users.
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Radarr/Radarr
Movie organizer/manager for usenet and torrent users.
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aspnetboilerplate/aspnetboilerplate
ASP.NET Boilerplate - Web Application Framework
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dotnet-architecture/eShopOnWeb
Sample ASP.NET Core 8.0 reference application, now community supported: https://github.com/NimblePros/eShopOnWeb
|
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MudBlazor/MudBlazor
Blazor Component Library based on Material Design principles with an emphasis on ease of use and extensibility
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ThreeMammals/Ocelot
.NET API Gateway
|
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NancyFx/Nancy
Lightweight, low-ceremony, framework for building HTTP based services on .Net and Mono
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EduardoPires/EquinoxProject
Web Application ASP.NET 9 using Clean Architecture, DDD, CQRS, Event Sourcing and a lot of good practices
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canton7/SyncTrayzor
Windows tray utility / filesystem watcher / launcher for Syncthing
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FastEndpoints/FastEndpoints
A light-weight REST API development framework for ASP.NET 8 and newer.
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Prowlarr/Prowlarr
Prowlarr is an indexer manager/proxy built on the popular *arr .net/reactjs base stack to integrate with your various PVR apps, supporting management of both Torrent Trackers and Usenet Indexers.
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jasontaylordev/NorthwindTraders
Northwind Traders is a sample application built using ASP.NET Core and Entity Framework Core.
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Lidarr/Lidarr
Looks and smells like Sonarr but made for music.
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microsoft/RulesEngine
A fast and reliable .NET Rules Engine with extensive Dynamic expression support
|
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fullstackhero/blazor-starter-kit
Clean Architecture Template for Blazor WebAssembly Built with MudBlazor Components.
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Megabit/Blazorise
Blazorise is a component library built on top of Blazor with support for CSS frameworks like Bootstrap, Tailwind, Bulma, AntDesign, and Material.
|
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Readarr/Readarr
Book Manager and Automation (Sonarr for Ebooks)
|
| Version | Downloads | Last Updated |
|---|---|---|
| 12.1.0 | 255,588 | 11/3/2025 |
| 12.0.0 | 17,626,730 | 5/5/2025 |
| 12.0.0-preview1 | 245,780 | 1/2/2025 |
| 11.12.0 | 22,442 | 11/3/2025 |
| 11.11.0 | 46,709,070 | 11/16/2024 |
| 11.10.0 | 20,640,781 | 9/15/2024 |
| 11.9.2 | 27,412,467 | 6/10/2024 |
| 11.9.1 | 14,045,633 | 4/23/2024 |
| 11.9.0 | 34,057,829 | 12/21/2023 |
| 11.8.1 | 9,835,509 | 11/22/2023 |
| 11.8.0 | 9,975,003 | 10/19/2023 |
| 11.7.1 | 12,129,741 | 8/12/2023 |
| 11.7.0 | 142,601 | 8/11/2023 |
| 11.6.0 | 9,239,741 | 7/4/2023 |
| 11.5.2 | 20,326,397 | 4/7/2023 |
| 11.5.1 | 67,868,329 | 2/20/2023 |
| 11.5.0 | 3,183,833 | 2/13/2023 |
| 11.4.0 | 20,218,945 | 11/23/2022 |
| 11.3.0 | 3,783,169 | 11/10/2022 |
| 11.2.2 | 17,227,044 | 9/11/2022 |
| 11.2.1 | 24,011,212 | 8/28/2022 |
| 11.2.0 | 7,889,499 | 8/8/2022 |
| 11.1.1 | 683,078 | 8/6/2022 |
| 11.1.0 | 13,679,074 | 6/22/2022 |
| 11.0.3 | 3,715,359 | 6/10/2022 |
| 11.0.2 | 5,661,527 | 5/27/2022 |
| 11.0.1 | 6,976,770 | 5/7/2022 |
| 11.0.0 | 7,014,516 | 4/30/2022 |
| 10.4.0 | 21,596,974 | 3/11/2022 |
| 10.3.6 | 28,099,081 | 12/13/2021 |
| 10.3.5 | 3,307,225 | 11/30/2021 |
| 10.3.4 | 10,583,784 | 10/22/2021 |
| 10.3.3 | 12,497,321 | 8/24/2021 |
| 10.3.1 | 753,859 | 8/19/2021 |
| 10.3.0 | 8,734,669 | 7/9/2021 |
| 10.2.3 | 8,751,922 | 6/3/2021 |
| 10.2.2 | 476,835 | 6/1/2021 |
| 10.2.1 | 1,394,791 | 5/30/2021 |
| 10.2.0 | 394,696 | 5/28/2021 |
| 10.1.0 | 5,631,145 | 4/28/2021 |
| 10.0.4 | 4,389,712 | 4/17/2021 |
| 9.5.4 | 7,595,316 | 4/5/2021 |
| 9.5.3 | 4,143,801 | 3/15/2021 |
| 9.5.2 | 2,066,063 | 3/8/2021 |
| 9.5.1 | 6,920,719 | 2/11/2021 |
| 9.5.0 | 3,492,669 | 1/31/2021 |
| 9.4.0 | 3,166,787 | 1/14/2021 |
| 9.3.0 | 15,262,183 | 11/10/2020 |
| 9.3.0-preview3 | 40,083 | 10/19/2020 |
| 9.3.0-preview2 | 154,365 | 9/15/2020 |
| 9.3.0-preview1 | 13,685 | 8/26/2020 |
| 9.2.2 | 7,306,886 | 9/20/2020 |
| 9.2.1 | 33,571 | 9/19/2020 |
| 9.2.0 | 8,119,873 | 8/26/2020 |
| 9.1.3 | 1,047,068 | 8/19/2020 |
| 9.1.2 | 990,666 | 8/12/2020 |
| 9.1.1 | 687,175 | 8/8/2020 |
| 9.1.0 | 317,368 | 8/8/2020 |
| 9.0.1 | 5,692,611 | 7/14/2020 |
| 9.0.0-preview5 | 90,623 | 5/23/2020 |
| 9.0.0-preview4 | 147,520 | 4/22/2020 |
| 9.0.0-preview3 | 208,535 | 2/29/2020 |
| 9.0.0-preview2 | 32,713 | 2/21/2020 |
| 9.0.0-preview1 | 101,231 | 2/8/2020 |
| 8.6.3 | 7,957,654 | 8/28/2020 |
| 8.6.2 | 29,507,609 | 2/29/2020 |
| 8.6.1 | 13,324,439 | 12/28/2019 |
| 8.6.0 | 4,411,306 | 12/4/2019 |
| 8.5.1 | 3,952,095 | 11/2/2019 |
| 8.5.0 | 6,742,840 | 9/24/2019 |
| 8.5.0-preview5 | 70,888 | 9/1/2019 |
| 8.5.0-preview4 | 103,052 | 7/23/2019 |
| 8.5.0-preview3 | 32,758 | 7/10/2019 |
| 8.5.0-preview2 | 89,485 | 6/13/2019 |
| 8.5.0-preview1 | 64,478 | 5/10/2019 |
| 8.4.0 | 15,073,641 | 5/10/2019 |
| 8.3.0 | 4,214,592 | 4/24/2019 |
| 8.2.3 | 741,973 | 4/12/2019 |
| 8.2.2 | 1,144,125 | 4/5/2019 |
| 8.2.1 | 506,057 | 4/4/2019 |
| 8.2.0 | 1,107,327 | 3/26/2019 |
| 8.1.3 | 5,244,472 | 1/25/2019 |
| 8.1.2 | 2,412,189 | 12/18/2018 |
| 8.1.1 | 621,277 | 12/11/2018 |
| 8.1.0 | 852,552 | 12/6/2018 |
| 8.1.0-preview2 | 29,926 | 11/14/2018 |
| 8.1.0-preview1 | 28,224 | 10/14/2018 |
| 8.0.101 | 962,966 | 11/24/2018 |
| 8.0.100 | 4,167,721 | 9/4/2018 |
| 8.0.0 | 1,178,723 | 8/16/2018 |
| 8.0.0-rc1 | 54,540 | 7/24/2018 |
| 8.0.0-preview4 | 26,129 | 7/16/2018 |
| 8.0.0-preview3 | 24,735 | 7/13/2018 |
| 8.0.0-preview2 | 24,587 | 7/13/2018 |
| 7.6.105 | 1,889,787 | 8/11/2018 |
| 7.6.104 | 2,836,463 | 7/6/2018 |
| 7.6.103 | 1,330,437 | 6/16/2018 |
| 7.6.102 | 344,666 | 6/14/2018 |
| 7.6.101 | 78,084 | 6/13/2018 |
| 7.6.100 | 181,554 | 6/7/2018 |
| 7.6.0 | 412,229 | 6/1/2018 |
| 7.6.0-preview1 | 53,034 | 4/12/2018 |
| 7.5.2 | 4,010,072 | 3/16/2018 |
| 7.5.1 | 283,133 | 3/11/2018 |
| 7.5.0 | 756,881 | 2/26/2018 |
| 7.4.0 | 2,393,175 | 1/26/2018 |
| 7.3.4 | 1,142,977 | 1/2/2018 |
| 7.3.3 | 199,760 | 12/22/2017 |
| 7.3.2 | 76,948 | 12/21/2017 |
| 7.3.1 | 350,311 | 12/13/2017 |
| 7.3.0 | 128,285 | 12/13/2017 |
| 7.3.0-beta3 | 28,601 | 12/8/2017 |
| 7.3.0-beta2 | 47,663 | 11/20/2017 |
| 7.3.0-beta1 | 25,432 | 11/11/2017 |
| 7.2.1 | 2,970,705 | 10/24/2017 |
| 7.2.0 | 853,227 | 10/5/2017 |
| 7.2.0-beta3 | 41,881 | 9/5/2017 |
| 7.2.0-beta2 | 27,696 | 8/22/2017 |
| 7.2.0-beta1 | 23,900 | 8/19/2017 |
| 7.1.1 | 2,417,570 | 7/25/2017 |
| 7.1.0 | 565,188 | 6/28/2017 |
| 7.1.0-beta1 | 23,678 | 6/24/2017 |
| 7.0.3 | 765,777 | 6/7/2017 |
| 7.0.2 | 292,357 | 5/26/2017 |
| 7.0.1 | 99,215 | 5/23/2017 |
| 7.0.0 | 759,244 | 5/19/2017 |
| 7.0.0-beta3 | 71,405 | 5/1/2017 |
| 7.0.0-beta2 | 27,355 | 4/17/2017 |
| 7.0.0-beta1 | 24,949 | 4/7/2017 |
| 6.4.1 | 2,240,466 | 3/15/2017 |
| 6.4.1-beta1 | 23,967 | 3/13/2017 |
| 6.4.0 | 1,076,929 | 3/3/2017 |
| 6.4.0-rc4 | 146,744 | 2/13/2017 |
| 6.4.0-rc3 | 39,919 | 2/3/2017 |
| 6.4.0-rc2 | 39,976 | 1/30/2017 |
| 6.4.0-rc1 | 23,773 | 1/30/2017 |
| 6.4.0-beta9 | 91,803 | 11/21/2016 |
| 6.4.0-beta8 | 50,777 | 10/31/2016 |
| 6.4.0-beta7 | 24,427 | 10/28/2016 |
| 6.4.0-beta6 | 24,717 | 10/25/2016 |
| 6.4.0-beta5 | 24,291 | 10/24/2016 |
| 6.4.0-beta4 | 24,394 | 10/21/2016 |
| 6.4.0-beta3 | 71,763 | 7/4/2016 |
| 6.4.0-beta2 | 25,288 | 7/1/2016 |
| 6.4.0-beta10 | 23,486 | 1/30/2017 |
| 6.4.0-beta1 | 28,686 | 6/28/2016 |
| 6.3.4-alpha | 435,179 | 6/1/2016 |
| 6.3.3-alpha | 23,278 | 5/27/2016 |
| 6.2.1 | 5,556,306 | 2/26/2016 |
| 6.2.1-beta1 | 28,758 | 2/24/2016 |
| 6.2.0 | 172,636 | 2/22/2016 |
| 6.2.0-beta1 | 24,612 | 2/12/2016 |
| 6.1.0 | 441,256 | 1/18/2016 |
| 6.0.2 | 118,307 | 1/5/2016 |
| 6.0.1 | 40,231 | 1/5/2016 |
| 6.0.0 | 135,999 | 12/22/2015 |
| 5.6.2 | 1,641,040 | 5/29/2015 |
| 5.6.1 | 35,041 | 5/29/2015 |
| 5.5.0 | 1,229,275 | 10/31/2014 |
| 5.4.0 | 614,283 | 7/3/2014 |
| 5.3.0 | 105,976 | 5/27/2014 |
| 5.2.0 | 77,202 | 5/21/2014 |
| 5.1.0 | 1,075,845 | 3/11/2014 |
| 5.0.0.1 | 565,193 | 10/24/2013 |
| 4.0.0.1 | 308,789 | 7/18/2013 |
| 4.0.0 | 121,324 | 4/29/2013 |
| 3.4.6 | 431,664 | 8/30/2012 |
| 3.4.0 | 72,412 | 8/17/2012 |
| 3.3.1 | 94,004 | 3/30/2012 |
| 3.2.0 | 78,759 | 11/14/2011 |
| 3.1.0 | 53,286 | 7/30/2011 |
| 3.0.0.1 | 26,550 | 7/5/2011 |
| 3.0.0 | 47,548 | 6/25/2011 |
| 2.0.0 | 78,021 | 1/9/2011 |
| 1.3.0 | 441,741 | 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 9.3.0:
* 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)
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