FluentValidation 7.3.2

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

There is a newer version of this package available.
See the version list below for details.
Install-Package FluentValidation -Version 7.3.2
dotnet add package FluentValidation --version 7.3.2
<PackageReference Include="FluentValidation" Version="7.3.2" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add FluentValidation --version 7.3.2
The NuGet Team does not provide support for this client. Please contact its maintainers for support.

Release Notes

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

  • .NETFramework 4.5

    • No dependencies.
  • .NETStandard 1.0

  • .NETStandard 2.0

    • No dependencies.

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Read more about the GitHub Usage information on our documentation.

Version History

Version Downloads Last updated
9.0.0-preview3 5,020 2/29/2020
9.0.0-preview2 3,184 2/21/2020
9.0.0-preview1 5,943 2/8/2020
8.6.2 168,394 2/29/2020
8.6.1 1,062,502 12/28/2019
8.6.0 651,041 12/4/2019
8.5.1 714,734 11/2/2019
8.5.0 1,118,434 9/24/2019
8.5.0-preview5 34,443 9/1/2019
8.5.0-preview4 56,469 7/23/2019
8.5.0-preview3 24,794 7/10/2019
8.5.0-preview2 32,229 6/13/2019
8.5.0-preview1 36,658 5/10/2019
8.4.0 3,932,558 5/10/2019
8.3.0 464,627 4/24/2019
8.2.3 233,131 4/12/2019
8.2.2 364,546 4/5/2019
8.2.1 61,075 4/4/2019
8.2.0 383,179 3/26/2019
8.1.3 2,282,339 1/25/2019
8.1.2 938,187 12/18/2018
8.1.1 249,188 12/11/2018
8.1.0 176,664 12/6/2018
8.1.0-preview2 24,517 11/14/2018
8.1.0-preview1 24,748 10/14/2018
8.0.101 323,106 11/24/2018
8.0.100 1,681,146 9/4/2018
8.0.0 376,718 8/16/2018
8.0.0-rc1 33,171 7/24/2018
8.0.0-preview4 21,540 7/16/2018
8.0.0-preview3 20,412 7/13/2018
8.0.0-preview2 20,168 7/13/2018
7.6.105 314,485 8/11/2018
7.6.104 1,238,168 7/6/2018
7.6.103 534,115 6/16/2018
7.6.102 129,865 6/14/2018
7.6.101 51,183 6/13/2018
7.6.100 93,998 6/7/2018
7.6.0 206,838 6/1/2018
7.6.0-preview1 29,296 4/12/2018
7.5.2 1,493,563 3/16/2018
7.5.1 118,541 3/11/2018
7.5.0 404,860 2/26/2018
7.4.0 581,442 1/26/2018
7.3.4 482,452 1/2/2018
7.3.3 118,845 12/22/2017
7.3.2 39,828 12/21/2017
7.3.1 148,201 12/13/2017
7.3.0 29,189 12/13/2017
7.3.0-beta3 24,903 12/8/2017
7.3.0-beta2 35,011 11/20/2017
7.3.0-beta1 21,851 11/11/2017
7.2.1 1,202,163 10/24/2017
7.2.0 409,740 10/5/2017
7.2.0-beta3 37,164 9/5/2017
7.2.0-beta2 23,406 8/22/2017
7.2.0-beta1 20,386 8/19/2017
7.1.1 880,495 7/25/2017
7.1.0 284,265 6/28/2017
7.1.0-beta1 20,233 6/24/2017
7.0.3 218,524 6/7/2017
7.0.2 144,763 5/26/2017
7.0.1 54,373 5/23/2017
7.0.0 176,622 5/19/2017
7.0.0-beta3 24,052 5/1/2017
7.0.0-beta2 23,840 4/17/2017
7.0.0-beta1 21,365 4/7/2017
6.4.1 581,033 3/15/2017
6.4.1-beta1 21,129 3/13/2017
6.4.0 423,512 3/3/2017
6.4.0-rc4 142,142 2/13/2017
6.4.0-rc3 29,565 2/3/2017
6.4.0-rc2 36,303 1/30/2017
6.4.0-rc1 20,226 1/30/2017
6.4.0-beta9 74,281 11/21/2016
6.4.0-beta8 45,206 10/31/2016
6.4.0-beta7 20,785 10/28/2016
6.4.0-beta6 21,197 10/25/2016
6.4.0-beta5 20,900 10/24/2016
6.4.0-beta4 20,918 10/21/2016
6.4.0-beta3 61,465 7/4/2016
6.4.0-beta2 21,748 7/1/2016
6.4.0-beta10 20,087 1/30/2017
6.4.0-beta1 23,882 6/28/2016
6.3.4-alpha 182,546 6/1/2016
6.3.3-alpha 20,507 5/27/2016
6.2.1 1,951,004 2/26/2016
6.2.1-beta1 24,272 2/24/2016
6.2.0 65,554 2/22/2016
6.2.0-beta1 20,527 2/12/2016
6.1.0 219,075 1/18/2016
6.0.2 82,548 1/5/2016
6.0.1 32,387 1/5/2016
6.0.0 56,925 12/22/2015
5.6.2 706,355 5/29/2015
5.6.1 26,081 5/29/2015
5.5.0 530,160 10/31/2014
5.4.0 303,367 7/3/2014
5.3.0 71,188 5/27/2014
5.2.0 44,320 5/21/2014
5.1.0 312,178 3/11/2014
5.0.0.1 181,058 10/24/2013
4.0.0.1 148,997 7/18/2013
4.0.0 81,440 4/29/2013
3.4.6 198,800 8/30/2012
3.4.0 45,107 8/17/2012
3.3.1 39,286 3/30/2012
3.2.0 52,423 11/14/2011
3.1.0 46,323 7/30/2011
3.0.0.1 22,283 7/5/2011
3.0.0 24,495 6/25/2011
2.0.0 37,459 1/9/2011
1.3.0 38,704 1/7/2011
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