FluentValidation 7.5.1

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There is a newer version of this package available.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 7.5.1
dotnet add package FluentValidation --version 7.5.1
<PackageReference Include="FluentValidation" Version="7.5.1" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add FluentValidation --version 7.5.1
The NuGet Team does not provide support for this client. Please contact its maintainers for support.

Release Notes

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

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Read more about the GitHub Usage information on our documentation.

Version History

Version Downloads Last updated
8.6.0 23,363 12/4/2019
8.5.1 247,583 11/2/2019
8.5.0 560,815 9/24/2019
8.5.0-preview5 25,369 9/1/2019
8.5.0-preview4 45,933 7/23/2019
8.5.0-preview3 23,900 7/10/2019
8.5.0-preview2 30,189 6/13/2019
8.5.0-preview1 32,950 5/10/2019
8.4.0 2,718,567 5/10/2019
8.3.0 312,106 4/24/2019
8.2.3 190,569 4/12/2019
8.2.2 298,914 4/5/2019
8.2.1 49,892 4/4/2019
8.2.0 303,448 3/26/2019
8.1.3 1,873,001 1/25/2019
8.1.2 786,631 12/18/2018
8.1.1 216,696 12/11/2018
8.1.0 147,811 12/6/2018
8.1.0-preview2 24,032 11/14/2018
8.1.0-preview1 23,935 10/14/2018
8.0.101 288,045 11/24/2018
8.0.100 1,442,326 9/4/2018
8.0.0 336,340 8/16/2018
8.0.0-rc1 32,687 7/24/2018
8.0.0-preview4 21,361 7/16/2018
8.0.0-preview3 20,269 7/13/2018
8.0.0-preview2 20,029 7/13/2018
7.6.105 259,649 8/11/2018
7.6.104 1,055,689 7/6/2018
7.6.103 476,919 6/16/2018
7.6.102 119,884 6/14/2018
7.6.101 43,264 6/13/2018
7.6.100 81,338 6/7/2018
7.6.0 186,667 6/1/2018
7.6.0-preview1 28,386 4/12/2018
7.5.2 1,350,442 3/16/2018
7.5.1 103,121 3/11/2018
7.5.0 353,108 2/26/2018
7.4.0 518,238 1/26/2018
7.3.4 428,493 1/2/2018
7.3.3 111,640 12/22/2017
7.3.2 37,878 12/21/2017
7.3.1 138,281 12/13/2017
7.3.0 27,439 12/13/2017
7.3.0-beta3 24,771 12/8/2017
7.3.0-beta2 33,379 11/20/2017
7.3.0-beta1 21,651 11/11/2017
7.2.1 1,073,011 10/24/2017
7.2.0 364,023 10/5/2017
7.2.0-beta3 36,956 9/5/2017
7.2.0-beta2 23,236 8/22/2017
7.2.0-beta1 20,274 8/19/2017
7.1.1 824,169 7/25/2017
7.1.0 271,081 6/28/2017
7.1.0-beta1 20,127 6/24/2017
7.0.3 205,210 6/7/2017
7.0.2 138,240 5/26/2017
7.0.1 53,663 5/23/2017
7.0.0 153,715 5/19/2017
7.0.0-beta3 23,921 5/1/2017
7.0.0-beta2 23,718 4/17/2017
7.0.0-beta1 21,247 4/7/2017
6.4.1 540,575 3/15/2017
6.4.1-beta1 21,002 3/13/2017
6.4.0 398,376 3/3/2017
6.4.0-rc4 141,709 2/13/2017
6.4.0-rc3 29,375 2/3/2017
6.4.0-rc2 36,193 1/30/2017
6.4.0-rc1 20,115 1/30/2017
6.4.0-beta9 73,300 11/21/2016
6.4.0-beta8 43,962 10/31/2016
6.4.0-beta7 20,581 10/28/2016
6.4.0-beta6 20,992 10/25/2016
6.4.0-beta5 20,705 10/24/2016
6.4.0-beta4 20,723 10/21/2016
6.4.0-beta3 60,851 7/4/2016
6.4.0-beta2 21,557 7/1/2016
6.4.0-beta10 19,973 1/30/2017
6.4.0-beta1 23,594 6/28/2016
6.3.4-alpha 162,197 6/1/2016
6.3.3-alpha 20,390 5/27/2016
6.2.1 1,821,823 2/26/2016
6.2.1-beta1 24,143 2/24/2016
6.2.0 58,580 2/22/2016
6.2.0-beta1 20,408 2/12/2016
6.1.0 209,397 1/18/2016
6.0.2 79,121 1/5/2016
6.0.1 30,861 1/5/2016
6.0.0 54,506 12/22/2015
5.6.2 667,175 5/29/2015
5.6.1 25,749 5/29/2015
5.5.0 491,347 10/31/2014
5.4.0 283,386 7/3/2014
5.3.0 69,636 5/27/2014
5.2.0 41,830 5/21/2014
5.1.0 292,544 3/11/2014
5.0.0.1 173,015 10/24/2013
4.0.0.1 142,078 7/18/2013
4.0.0 79,743 4/29/2013
3.4.6 193,187 8/30/2012
3.4.0 43,652 8/17/2012
3.3.1 38,847 3/30/2012
3.2.0 51,869 11/14/2011
3.1.0 45,825 7/30/2011
3.0.0.1 22,124 7/5/2011
3.0.0 23,374 6/25/2011
2.0.0 35,752 1/9/2011
1.3.0 37,285 1/7/2011
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