FluentValidation 9.3.0-preview1
Prefix ReservedSee the version list below for details.
dotnet add package FluentValidation --version 9.3.0-preview1
NuGet\Install-Package FluentValidation -Version 9.3.0-preview1
<PackageReference Include="FluentValidation" Version="9.3.0-preview1" />
<PackageVersion Include="FluentValidation" Version="9.3.0-preview1" />
<PackageReference Include="FluentValidation" />
paket add FluentValidation --version 9.3.0-preview1
#r "nuget: FluentValidation, 9.3.0-preview1"
#:package FluentValidation@9.3.0-preview1
#addin nuget:?package=FluentValidation&version=9.3.0-preview1&prerelease
#tool nuget:?package=FluentValidation&version=9.3.0-preview1&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 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. 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.
NuGet packages (2.9K)
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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Reo.Core.DataModels
Package Description |
|
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Ocelot
Ocelot is an API gateway based on .NET stack. |
|
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Reo.Core.Validation
Package Description |
GitHub repositories (255)
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 10
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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 | 1,282,216 | 11/3/2025 |
| 12.0.0 | 19,820,613 | 5/5/2025 |
| 12.0.0-preview1 | 260,110 | 1/2/2025 |
| 11.12.0 | 119,540 | 11/3/2025 |
| 11.11.0 | 49,514,109 | 11/16/2024 |
| 11.10.0 | 21,299,447 | 9/15/2024 |
| 11.9.2 | 28,099,262 | 6/10/2024 |
| 11.9.1 | 14,368,857 | 4/23/2024 |
| 11.9.0 | 34,730,236 | 12/21/2023 |
| 11.8.1 | 10,034,691 | 11/22/2023 |
| 11.8.0 | 10,148,353 | 10/19/2023 |
| 11.7.1 | 12,285,199 | 8/12/2023 |
| 11.7.0 | 145,530 | 8/11/2023 |
| 11.6.0 | 9,373,741 | 7/4/2023 |
| 11.5.2 | 20,581,177 | 4/7/2023 |
| 11.5.1 | 69,367,979 | 2/20/2023 |
| 11.5.0 | 3,248,081 | 2/13/2023 |
| 11.4.0 | 20,415,169 | 11/23/2022 |
| 11.3.0 | 3,826,336 | 11/10/2022 |
| 11.2.2 | 17,383,584 | 9/11/2022 |
| 11.2.1 | 24,220,437 | 8/28/2022 |
| 11.2.0 | 7,929,664 | 8/8/2022 |
| 11.1.1 | 687,846 | 8/6/2022 |
| 11.1.0 | 13,782,931 | 6/22/2022 |
| 11.0.3 | 3,745,619 | 6/10/2022 |
| 11.0.2 | 5,707,897 | 5/27/2022 |
| 11.0.1 | 7,019,926 | 5/7/2022 |
| 11.0.0 | 7,144,121 | 4/30/2022 |
| 10.4.0 | 21,803,972 | 3/11/2022 |
| 10.3.6 | 28,265,607 | 12/13/2021 |
| 10.3.5 | 3,322,931 | 11/30/2021 |
| 10.3.4 | 10,646,800 | 10/22/2021 |
| 10.3.3 | 12,573,120 | 8/24/2021 |
| 10.3.1 | 757,582 | 8/19/2021 |
| 10.3.0 | 8,788,037 | 7/9/2021 |
| 10.2.3 | 8,804,533 | 6/3/2021 |
| 10.2.2 | 478,823 | 6/1/2021 |
| 10.2.1 | 1,399,104 | 5/30/2021 |
| 10.2.0 | 396,232 | 5/28/2021 |
| 10.1.0 | 5,673,620 | 4/28/2021 |
| 10.0.4 | 4,402,765 | 4/17/2021 |
| 9.5.4 | 7,745,868 | 4/5/2021 |
| 9.5.3 | 4,157,967 | 3/15/2021 |
| 9.5.2 | 2,077,231 | 3/8/2021 |
| 9.5.1 | 6,940,948 | 2/11/2021 |
| 9.5.0 | 3,511,182 | 1/31/2021 |
| 9.4.0 | 3,178,999 | 1/14/2021 |
| 9.3.0 | 15,321,762 | 11/10/2020 |
| 9.3.0-preview3 | 40,124 | 10/19/2020 |
| 9.3.0-preview2 | 154,785 | 9/15/2020 |
| 9.3.0-preview1 | 13,708 | 8/26/2020 |
| 9.2.2 | 7,328,294 | 9/20/2020 |
| 9.2.1 | 33,840 | 9/19/2020 |
| 9.2.0 | 8,167,735 | 8/26/2020 |
| 9.1.3 | 1,048,790 | 8/19/2020 |
| 9.1.2 | 995,033 | 8/12/2020 |
| 9.1.1 | 688,468 | 8/8/2020 |
| 9.1.0 | 323,997 | 8/8/2020 |
| 9.0.1 | 5,713,431 | 7/14/2020 |
| 9.0.0-preview5 | 90,713 | 5/23/2020 |
| 9.0.0-preview4 | 147,609 | 4/22/2020 |
| 9.0.0-preview3 | 209,376 | 2/29/2020 |
| 9.0.0-preview2 | 32,737 | 2/21/2020 |
| 9.0.0-preview1 | 101,575 | 2/8/2020 |
| 8.6.3 | 8,033,533 | 8/28/2020 |
| 8.6.2 | 29,632,307 | 2/29/2020 |
| 8.6.1 | 13,381,095 | 12/28/2019 |
| 8.6.0 | 4,427,765 | 12/4/2019 |
| 8.5.1 | 3,969,412 | 11/2/2019 |
| 8.5.0 | 6,773,459 | 9/24/2019 |
| 8.5.0-preview5 | 70,998 | 9/1/2019 |
| 8.5.0-preview4 | 103,390 | 7/23/2019 |
| 8.5.0-preview3 | 32,835 | 7/10/2019 |
| 8.5.0-preview2 | 89,822 | 6/13/2019 |
| 8.5.0-preview1 | 64,806 | 5/10/2019 |
| 8.4.0 | 15,168,013 | 5/10/2019 |
| 8.3.0 | 4,231,454 | 4/24/2019 |
| 8.2.3 | 746,652 | 4/12/2019 |
| 8.2.2 | 1,156,876 | 4/5/2019 |
| 8.2.1 | 507,766 | 4/4/2019 |
| 8.2.0 | 1,116,556 | 3/26/2019 |
| 8.1.3 | 5,254,081 | 1/25/2019 |
| 8.1.2 | 2,418,941 | 12/18/2018 |
| 8.1.1 | 623,253 | 12/11/2018 |
| 8.1.0 | 854,890 | 12/6/2018 |
| 8.1.0-preview2 | 29,947 | 11/14/2018 |
| 8.1.0-preview1 | 28,261 | 10/14/2018 |
| 8.0.101 | 966,594 | 11/24/2018 |
| 8.0.100 | 4,184,106 | 9/4/2018 |
| 8.0.0 | 1,187,611 | 8/16/2018 |
| 8.0.0-rc1 | 54,633 | 7/24/2018 |
| 8.0.0-preview4 | 26,156 | 7/16/2018 |
| 8.0.0-preview3 | 24,768 | 7/13/2018 |
| 8.0.0-preview2 | 24,617 | 7/13/2018 |
| 7.6.105 | 1,913,905 | 8/11/2018 |
| 7.6.104 | 2,841,162 | 7/6/2018 |
| 7.6.103 | 1,334,069 | 6/16/2018 |
| 7.6.102 | 345,491 | 6/14/2018 |
| 7.6.101 | 78,208 | 6/13/2018 |
| 7.6.100 | 182,010 | 6/7/2018 |
| 7.6.0 | 413,315 | 6/1/2018 |
| 7.6.0-preview1 | 53,281 | 4/12/2018 |
| 7.5.2 | 4,020,535 | 3/16/2018 |
| 7.5.1 | 284,167 | 3/11/2018 |
| 7.5.0 | 757,509 | 2/26/2018 |
| 7.4.0 | 2,413,700 | 1/26/2018 |
| 7.3.4 | 1,147,855 | 1/2/2018 |
| 7.3.3 | 200,562 | 12/22/2017 |
| 7.3.2 | 77,046 | 12/21/2017 |
| 7.3.1 | 351,630 | 12/13/2017 |
| 7.3.0 | 129,188 | 12/13/2017 |
| 7.3.0-beta3 | 28,637 | 12/8/2017 |
| 7.3.0-beta2 | 47,765 | 11/20/2017 |
| 7.3.0-beta1 | 25,457 | 11/11/2017 |
| 7.2.1 | 2,982,362 | 10/24/2017 |
| 7.2.0 | 855,162 | 10/5/2017 |
| 7.2.0-beta3 | 41,905 | 9/5/2017 |
| 7.2.0-beta2 | 27,730 | 8/22/2017 |
| 7.2.0-beta1 | 23,924 | 8/19/2017 |
| 7.1.1 | 2,446,446 | 7/25/2017 |
| 7.1.0 | 566,262 | 6/28/2017 |
| 7.1.0-beta1 | 23,704 | 6/24/2017 |
| 7.0.3 | 767,206 | 6/7/2017 |
| 7.0.2 | 293,228 | 5/26/2017 |
| 7.0.1 | 100,059 | 5/23/2017 |
| 7.0.0 | 763,756 | 5/19/2017 |
| 7.0.0-beta3 | 80,856 | 5/1/2017 |
| 7.0.0-beta2 | 27,379 | 4/17/2017 |
| 7.0.0-beta1 | 24,974 | 4/7/2017 |
| 6.4.1 | 2,280,873 | 3/15/2017 |
| 6.4.1-beta1 | 23,991 | 3/13/2017 |
| 6.4.0 | 1,085,502 | 3/3/2017 |
| 6.4.0-rc4 | 146,770 | 2/13/2017 |
| 6.4.0-rc3 | 39,942 | 2/3/2017 |
| 6.4.0-rc2 | 40,005 | 1/30/2017 |
| 6.4.0-rc1 | 23,798 | 1/30/2017 |
| 6.4.0-beta9 | 91,834 | 11/21/2016 |
| 6.4.0-beta8 | 50,800 | 10/31/2016 |
| 6.4.0-beta7 | 24,452 | 10/28/2016 |
| 6.4.0-beta6 | 24,740 | 10/25/2016 |
| 6.4.0-beta5 | 24,316 | 10/24/2016 |
| 6.4.0-beta4 | 24,418 | 10/21/2016 |
| 6.4.0-beta3 | 71,810 | 7/4/2016 |
| 6.4.0-beta2 | 25,310 | 7/1/2016 |
| 6.4.0-beta10 | 23,510 | 1/30/2017 |
| 6.4.0-beta1 | 28,722 | 6/28/2016 |
| 6.3.4-alpha | 437,828 | 6/1/2016 |
| 6.3.3-alpha | 23,307 | 5/27/2016 |
| 6.2.1 | 5,583,581 | 2/26/2016 |
| 6.2.1-beta1 | 28,785 | 2/24/2016 |
| 6.2.0 | 172,832 | 2/22/2016 |
| 6.2.0-beta1 | 24,635 | 2/12/2016 |
| 6.1.0 | 443,570 | 1/18/2016 |
| 6.0.2 | 118,581 | 1/5/2016 |
| 6.0.1 | 40,267 | 1/5/2016 |
| 6.0.0 | 136,515 | 12/22/2015 |
| 5.6.2 | 1,649,559 | 5/29/2015 |
| 5.6.1 | 35,091 | 5/29/2015 |
| 5.5.0 | 1,233,051 | 10/31/2014 |
| 5.4.0 | 615,310 | 7/3/2014 |
| 5.3.0 | 106,098 | 5/27/2014 |
| 5.2.0 | 77,410 | 5/21/2014 |
| 5.1.0 | 1,080,857 | 3/11/2014 |
| 5.0.0.1 | 568,665 | 10/24/2013 |
| 4.0.0.1 | 310,292 | 7/18/2013 |
| 4.0.0 | 121,793 | 4/29/2013 |
| 3.4.6 | 434,491 | 8/30/2012 |
| 3.4.0 | 72,741 | 8/17/2012 |
| 3.3.1 | 94,427 | 3/30/2012 |
| 3.2.0 | 79,176 | 11/14/2011 |
| 3.1.0 | 53,320 | 7/30/2011 |
| 3.0.0.1 | 26,579 | 7/5/2011 |
| 3.0.0 | 47,682 | 6/25/2011 |
| 2.0.0 | 78,241 | 1/9/2011 |
| 1.3.0 | 452,214 | 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
* Support for .NET 5
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