FluentValidation 7.2.0-beta2
A validation library for .NET that uses a fluent interface to construct strongly-typed validation rules.
No packages depend on FluentValidation.
FluentValidation 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
* 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
* Additional overload of WithState allows access to collection item when used with RuleForEach
Full release notes can be found at https://github.com/JeremySkinner/FluentValidation/blob/master/Changelog.txt
| Version | Downloads | Last updated |
|---|---|---|
| 12.1.0 | 2 | 11/5/2025 |
| 12.0.0 | 18 | 5/8/2025 |
| 12.0.0-preview1 | 27 | 2/18/2025 |
| 11.12.0 | 2 | 11/5/2025 |
| 11.11.0 | 24 | 2/19/2025 |
| 11.10.0 | 27 | 10/1/2024 |
| 11.9.2 | 26 | 7/20/2024 |
| 11.9.1 | 31 | 5/3/2024 |
| 11.9.0 | 33 | 3/8/2024 |
| 11.8.1 | 32 | 3/8/2024 |
| 11.8.0 | 29 | 3/8/2024 |
| 11.7.1 | 30 | 3/8/2024 |
| 11.7.0 | 27 | 3/8/2024 |
| 11.6.0 | 33 | 2/27/2024 |
| 11.5.2 | 35 | 3/8/2024 |
| 11.5.1 | 27 | 3/8/2024 |
| 11.5.0 | 30 | 3/6/2024 |
| 11.4.0 | 33 | 3/8/2024 |
| 11.3.0 | 26 | 3/8/2024 |
| 11.2.2 | 32 | 3/8/2024 |
| 11.2.1 | 28 | 3/8/2024 |
| 11.2.0 | 34 | 2/12/2024 |
| 11.1.1 | 28 | 3/8/2024 |
| 11.1.0 | 34 | 3/3/2024 |
| 11.0.3 | 36 | 3/8/2024 |
| 11.0.2 | 29 | 3/8/2024 |
| 11.0.1 | 33 | 3/2/2024 |
| 11.0.0 | 30 | 2/27/2024 |
| 10.4.0 | 31 | 2/26/2024 |
| 10.3.6 | 27 | 3/8/2024 |
| 10.3.5 | 27 | 3/8/2024 |
| 10.3.4 | 28 | 3/8/2024 |
| 10.3.3 | 29 | 3/8/2024 |
| 10.3.1 | 36 | 3/8/2024 |
| 10.3.0 | 33 | 2/11/2024 |
| 10.2.3 | 29 | 3/8/2024 |
| 10.2.2 | 26 | 3/1/2024 |
| 10.2.1 | 31 | 3/2/2024 |
| 10.2.0 | 29 | 2/10/2024 |
| 10.1.0 | 34 | 3/8/2024 |
| 10.0.4 | 34 | 3/7/2024 |
| 9.5.4 | 33 | 3/8/2024 |
| 9.5.3 | 26 | 3/8/2024 |
| 9.5.2 | 33 | 3/8/2024 |
| 9.5.1 | 32 | 3/8/2024 |
| 9.5.0 | 33 | 3/8/2024 |
| 9.4.0 | 38 | 3/8/2024 |
| 9.3.0 | 34 | 2/28/2024 |
| 9.3.0-preview3 | 34 | 2/27/2024 |
| 9.3.0-preview2 | 36 | 4/12/2022 |
| 9.3.0-preview1 | 27 | 3/8/2024 |
| 9.2.2 | 56 | 3/8/2024 |
| 9.2.1 | 32 | 3/8/2024 |
| 9.2.0 | 38 | 2/11/2024 |
| 9.1.3 | 25 | 3/1/2024 |
| 9.1.2 | 28 | 2/10/2024 |
| 9.1.1 | 31 | 2/21/2024 |
| 9.1.0 | 36 | 3/1/2024 |
| 9.0.1 | 31 | 3/8/2024 |
| 9.0.0-preview5 | 26 | 3/8/2024 |
| 9.0.0-preview4 | 36 | 3/8/2024 |
| 9.0.0-preview3 | 32 | 3/8/2024 |
| 9.0.0-preview2 | 29 | 3/8/2024 |
| 9.0.0-preview1 | 27 | 3/8/2024 |
| 8.6.3 | 36 | 3/8/2024 |
| 8.6.2 | 35 | 3/8/2024 |
| 8.6.1 | 32 | 3/8/2024 |
| 8.6.0 | 30 | 2/23/2024 |
| 8.5.1 | 31 | 2/23/2024 |
| 8.5.0 | 30 | 3/4/2024 |
| 8.5.0-preview5 | 36 | 3/8/2024 |
| 8.5.0-preview4 | 24 | 3/8/2024 |
| 8.5.0-preview3 | 33 | 3/8/2024 |
| 8.5.0-preview2 | 28 | 3/8/2024 |
| 8.5.0-preview1 | 31 | 3/8/2024 |
| 8.4.0 | 31 | 3/8/2024 |
| 8.3.0 | 29 | 3/8/2024 |
| 8.2.3 | 28 | 3/8/2024 |
| 8.2.2 | 33 | 3/8/2024 |
| 8.2.1 | 31 | 3/8/2024 |
| 8.2.0 | 28 | 3/8/2024 |
| 8.1.3 | 27 | 3/8/2024 |
| 8.1.2 | 30 | 3/8/2024 |
| 8.1.1 | 26 | 2/10/2024 |
| 8.1.0 | 34 | 3/4/2024 |
| 8.1.0-preview2 | 30 | 3/8/2024 |
| 8.1.0-preview1 | 33 | 3/8/2024 |
| 8.0.101 | 30 | 3/8/2024 |
| 8.0.100 | 31 | 3/8/2024 |
| 8.0.0 | 25 | 3/5/2024 |
| 8.0.0-rc1 | 34 | 3/8/2024 |
| 8.0.0-preview4 | 30 | 3/8/2024 |
| 8.0.0-preview3 | 34 | 3/8/2024 |
| 8.0.0-preview2 | 33 | 2/29/2024 |
| 7.6.105 | 33 | 3/8/2024 |
| 7.6.104 | 32 | 3/8/2024 |
| 7.6.103 | 29 | 3/8/2024 |
| 7.6.102 | 32 | 3/8/2024 |
| 7.6.101 | 31 | 3/3/2024 |
| 7.6.100 | 33 | 3/8/2024 |
| 7.6.0 | 35 | 3/8/2024 |
| 7.6.0-preview1 | 29 | 3/8/2024 |
| 7.5.2 | 27 | 3/8/2024 |
| 7.5.1 | 27 | 2/24/2024 |
| 7.5.0 | 39 | 3/8/2024 |
| 7.4.0 | 25 | 3/7/2024 |
| 7.3.4 | 28 | 3/8/2024 |
| 7.3.3 | 29 | 3/8/2024 |
| 7.3.2 | 32 | 3/8/2024 |
| 7.3.1 | 30 | 3/8/2024 |
| 7.3.0 | 35 | 3/8/2024 |
| 7.3.0-beta3 | 30 | 3/8/2024 |
| 7.3.0-beta2 | 29 | 3/8/2024 |
| 7.3.0-beta1 | 29 | 3/8/2024 |
| 7.2.1 | 28 | 3/8/2024 |
| 7.2.0 | 31 | 2/26/2024 |
| 7.2.0-beta3 | 29 | 3/8/2024 |
| 7.2.0-beta2 | 23 | 3/8/2024 |
| 7.2.0-beta1 | 25 | 3/8/2024 |
| 7.1.1 | 26 | 3/8/2024 |
| 7.1.0 | 33 | 3/8/2024 |
| 7.1.0-beta1 | 32 | 3/8/2024 |
| 7.0.3 | 34 | 3/8/2024 |
| 7.0.2 | 30 | 3/8/2024 |
| 7.0.1 | 36 | 3/8/2024 |
| 7.0.0 | 32 | 3/8/2024 |
| 7.0.0-beta3 | 29 | 3/8/2024 |
| 7.0.0-beta2 | 28 | 3/8/2024 |
| 7.0.0-beta1 | 27 | 3/8/2024 |
| 6.4.1 | 27 | 3/8/2024 |
| 6.4.1-beta1 | 35 | 3/8/2024 |
| 6.4.0 | 30 | 3/8/2024 |
| 6.4.0-rc4 | 36 | 3/8/2024 |
| 6.4.0-rc3 | 32 | 3/8/2024 |
| 6.4.0-rc2 | 34 | 3/8/2024 |
| 6.4.0-rc1 | 33 | 3/8/2024 |
| 6.4.0-beta9 | 25 | 3/8/2024 |
| 6.4.0-beta8 | 28 | 3/8/2024 |
| 6.4.0-beta7 | 28 | 3/8/2024 |
| 6.4.0-beta6 | 26 | 3/8/2024 |
| 6.4.0-beta5 | 31 | 3/8/2024 |
| 6.4.0-beta4 | 29 | 3/8/2024 |
| 6.4.0-beta3 | 28 | 3/8/2024 |
| 6.4.0-beta2 | 34 | 3/8/2024 |
| 6.4.0-beta10 | 31 | 3/8/2024 |
| 6.4.0-beta1 | 27 | 3/8/2024 |
| 6.3.4-alpha | 26 | 3/2/2024 |
| 6.3.3-alpha | 30 | 3/8/2024 |
| 6.2.1 | 33 | 3/8/2024 |
| 6.2.1-beta1 | 32 | 3/8/2024 |
| 6.2.0 | 26 | 3/8/2024 |
| 6.2.0-beta1 | 27 | 3/8/2024 |
| 6.1.0 | 34 | 3/8/2024 |
| 6.0.2 | 30 | 3/8/2024 |
| 6.0.1 | 31 | 3/8/2024 |
| 6.0.0 | 30 | 3/8/2024 |
| 5.6.2 | 31 | 3/8/2024 |
| 5.6.1 | 30 | 3/8/2024 |
| 5.5.0 | 26 | 3/8/2024 |
| 5.4.0 | 33 | 3/2/2024 |
| 5.3.0 | 33 | 3/8/2024 |
| 5.2.0 | 32 | 3/8/2024 |
| 5.1.0 | 35 | 3/6/2024 |
| 5.0.0.1 | 28 | 2/11/2024 |
| 4.0.0.1 | 30 | 2/10/2024 |
| 4.0.0 | 26 | 3/8/2024 |
| 3.4.6 | 31 | 3/8/2024 |
| 3.4.0 | 26 | 3/8/2024 |
| 3.3.1 | 28 | 3/8/2024 |
| 3.2.0 | 34 | 3/3/2024 |
| 3.1.0 | 32 | 3/8/2024 |
| 3.0.0.1 | 32 | 2/10/2024 |
| 3.0.0 | 28 | 3/8/2024 |
| 2.0.0 | 34 | 3/8/2024 |
| 1.3.0 | 34 | 3/8/2024 |