FluentValidation 9.3.0-preview1

Prefix Reserved
This is a prerelease version of FluentValidation.
There is a newer version of this package available.
See the version list below for details.
dotnet add package FluentValidation --version 9.3.0-preview1                
NuGet\Install-Package FluentValidation -Version 9.3.0-preview1                
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="9.3.0-preview1" />                
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add FluentValidation --version 9.3.0-preview1                
#r "nuget: FluentValidation, 9.3.0-preview1"                
#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=9.3.0-preview1&prerelease

// Install FluentValidation as a Cake Tool
#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 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 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.

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 1,847,554 6/10/2024
11.9.1 3,660,992 4/23/2024
11.9.0 14,571,232 12/21/2023
11.8.1 3,981,814 11/22/2023
11.8.0 5,186,616 10/19/2023
11.7.1 7,679,753 8/12/2023
11.7.0 96,958 8/11/2023
11.6.0 5,980,551 7/4/2023
11.5.2 13,601,192 4/7/2023
11.5.1 26,801,170 2/20/2023
11.5.0 1,821,444 2/13/2023
11.4.0 14,437,687 11/23/2022
11.3.0 2,709,217 11/10/2022
11.2.2 12,668,776 9/11/2022
11.2.1 18,285,158 8/28/2022
11.2.0 6,467,621 8/8/2022
11.1.1 520,459 8/6/2022
11.1.0 10,566,061 6/22/2022
11.0.3 2,819,434 6/10/2022
11.0.2 4,036,992 5/27/2022
11.0.1 5,535,221 5/7/2022
11.0.0 4,076,919 4/30/2022
10.4.0 16,333,931 3/11/2022
10.3.6 22,703,658 12/13/2021
10.3.5 2,822,123 11/30/2021
10.3.4 8,661,101 10/22/2021
10.3.3 10,358,583 8/24/2021
10.3.1 645,366 8/19/2021
10.3.0 7,275,133 7/9/2021
10.2.3 7,211,151 6/3/2021
10.2.2 413,343 6/1/2021
10.2.1 1,218,791 5/30/2021
10.2.0 321,480 5/28/2021
10.1.0 4,668,710 4/28/2021
10.0.4 3,789,766 4/17/2021
9.5.4 4,489,061 4/5/2021
9.5.3 3,694,916 3/15/2021
9.5.2 1,735,580 3/8/2021
9.5.1 6,148,062 2/11/2021
9.5.0 2,856,193 1/31/2021
9.4.0 2,790,417 1/14/2021
9.3.0 12,789,446 11/10/2020
9.3.0-preview3 36,112 10/19/2020
9.3.0-preview2 142,865 9/15/2020
9.3.0-preview1 12,776 8/26/2020
9.2.2 6,562,357 9/20/2020
9.2.1 25,622 9/19/2020
9.2.0 7,257,380 8/26/2020
9.1.3 976,680 8/19/2020
9.1.2 883,544 8/12/2020
9.1.1 633,564 8/8/2020
9.1.0 144,689 8/8/2020
9.0.1 4,964,117 7/14/2020
9.0.0-preview5 86,700 5/23/2020
9.0.0-preview4 136,952 4/22/2020
9.0.0-preview3 187,949 2/29/2020
9.0.0-preview2 31,510 2/21/2020
9.0.0-preview1 92,285 2/8/2020
8.6.3 5,783,216 8/28/2020
8.6.2 25,327,228 2/29/2020
8.6.1 11,585,760 12/28/2019
8.6.0 3,912,631 12/4/2019
8.5.1 3,566,134 11/2/2019
8.5.0 5,552,217 9/24/2019
8.5.0-preview5 65,979 9/1/2019
8.5.0-preview4 92,130 7/23/2019
8.5.0-preview3 30,895 7/10/2019
8.5.0-preview2 73,360 6/13/2019
8.5.0-preview1 57,069 5/10/2019
8.4.0 13,091,466 5/10/2019
8.3.0 3,717,140 4/24/2019
8.2.3 636,830 4/12/2019
8.2.2 953,324 4/5/2019
8.2.1 430,285 4/4/2019
8.2.0 1,007,563 3/26/2019
8.1.3 4,890,217 1/25/2019
8.1.2 2,214,964 12/18/2018
8.1.1 556,097 12/11/2018
8.1.0 617,535 12/6/2018
8.1.0-preview2 29,048 11/14/2018
8.1.0-preview1 27,486 10/14/2018
8.0.101 801,870 11/24/2018
8.0.100 3,707,420 9/4/2018
8.0.0 1,014,177 8/16/2018
8.0.0-rc1 51,938 7/24/2018
8.0.0-preview4 25,402 7/16/2018
8.0.0-preview3 23,945 7/13/2018
8.0.0-preview2 23,761 7/13/2018
7.6.105 1,477,308 8/11/2018
7.6.104 2,647,725 7/6/2018
7.6.103 1,224,584 6/16/2018
7.6.102 297,778 6/14/2018
7.6.101 74,642 6/13/2018
7.6.100 165,937 6/7/2018
7.6.0 375,649 6/1/2018
7.6.0-preview1 47,245 4/12/2018
7.5.2 3,622,652 3/16/2018
7.5.1 250,986 3/11/2018
7.5.0 720,779 2/26/2018
7.4.0 1,700,121 1/26/2018
7.3.4 1,012,457 1/2/2018
7.3.3 180,803 12/22/2017
7.3.2 69,974 12/21/2017
7.3.1 315,303 12/13/2017
7.3.0 87,903 12/13/2017
7.3.0-beta3 27,819 12/8/2017
7.3.0-beta2 44,904 11/20/2017
7.3.0-beta1 24,784 11/11/2017
7.2.1 2,663,136 10/24/2017
7.2.0 781,335 10/5/2017
7.2.0-beta3 41,122 9/5/2017
7.2.0-beta2 26,974 8/22/2017
7.2.0-beta1 23,246 8/19/2017
7.1.1 1,891,146 7/25/2017
7.1.0 533,019 6/28/2017
7.1.0-beta1 23,020 6/24/2017
7.0.3 725,209 6/7/2017
7.0.2 273,907 5/26/2017
7.0.1 79,058 5/23/2017
7.0.0 581,132 5/19/2017
7.0.0-beta3 27,538 5/1/2017
7.0.0-beta2 26,689 4/17/2017
7.0.0-beta1 24,255 4/7/2017
6.4.1 1,632,363 3/15/2017
6.4.1-beta1 23,385 3/13/2017
6.4.0 864,201 3/3/2017
6.4.0-rc4 145,931 2/13/2017
6.4.0-rc3 38,893 2/3/2017
6.4.0-rc2 39,355 1/30/2017
6.4.0-rc1 23,146 1/30/2017
6.4.0-beta9 90,225 11/21/2016
6.4.0-beta8 50,130 10/31/2016
6.4.0-beta7 23,766 10/28/2016
6.4.0-beta6 24,066 10/25/2016
6.4.0-beta5 23,702 10/24/2016
6.4.0-beta4 23,805 10/21/2016
6.4.0-beta3 70,429 7/4/2016
6.4.0-beta2 24,681 7/1/2016
6.4.0-beta10 22,903 1/30/2017
6.4.0-beta1 27,953 6/28/2016
6.3.4-alpha 397,018 6/1/2016
6.3.3-alpha 22,718 5/27/2016
6.2.1 4,776,430 2/26/2016
6.2.1-beta1 28,108 2/24/2016
6.2.0 156,280 2/22/2016
6.2.0-beta1 23,951 2/12/2016
6.1.0 395,221 1/18/2016
6.0.2 110,866 1/5/2016
6.0.1 38,526 1/5/2016
6.0.0 121,528 12/22/2015
5.6.2 1,395,626 5/29/2015
5.6.1 33,564 5/29/2015
5.5.0 1,106,378 10/31/2014
5.4.0 572,413 7/3/2014
5.3.0 100,951 5/27/2014
5.2.0 72,785 5/21/2014
5.1.0 925,444 3/11/2014
5.0.0.1 462,086 10/24/2013
4.0.0.1 276,971 7/18/2013
4.0.0 108,290 4/29/2013
3.4.6 382,307 8/30/2012
3.4.0 64,508 8/17/2012
3.3.1 80,532 3/30/2012
3.2.0 71,132 11/14/2011
3.1.0 52,144 7/30/2011
3.0.0.1 25,833 7/5/2011
3.0.0 41,610 6/25/2011
2.0.0 68,010 1/9/2011
1.3.0 195,595 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