FluentValidation 8.1.0

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

Showing the top 20 packages that depend on FluentValidation.

Packages Downloads
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
 51
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
 50
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
 48
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
 47
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
 47
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
 45
FluentValidation.DependencyInjectionExtensions
Dependenecy injection extensions for FluentValidation
 45
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
 44
FluentValidation.DependencyInjectionExtensions
Dependenecy injection extensions for FluentValidation
 44
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
 44
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
 43

FluentValidation 8 is a major release. Please read the upgrade notes at https://fluentvalidation.net/upgrading-to-8 Changes in 8.1: * Add format support in message placeholders. * Added support for overriding indexers for collection rules. * Allow error codes to be used to override localization key in the Language Manager. * Additional error details are now shown in the ShouldNotHaveValidationErrorFor test extension. * Conditions defined with root-level When/WhenAsync/Unless/UnlessAsync are now only executed once (instead of once for each rule). * Support Otherwise method chained from root-level When/WhenAsync/Unless/UnlessAsync. * Minor wording changes to default English error messages. * Japanese translation of the default error messages. * Added Skip property to MVC5's CustomizeValidatorAttribute for parity with AspNetCore and WebApi. * Remove type constraint on the OverridePropertyName overload that takes an expression. Added Skip property to MVC5's CustomizeValidatorAttribute to bring parity with AspNetCore and WebApi integration. Changes in 8.0: * Support validating only specific properties by path. * Added OnFailure method * Deprecated RuleFor(..).SetCollectionValidator in favour of RuleForEach(...).SetValidator * IStringSource.GetString now takes a validation context instead of a model instance. * Introduce PropertyValidatorOptions in order to clean up the IPropretyValidator interface. * Moved the legacy ValidatorAttribute and AttributedValidatorFactory into a separate FluentValidation.Attributes package. * Remove the pre-7.0 localization mechanism * Remove the pre-7.0 methods for custom validation * Removed many other deprecated methods Full release notes can be found at https://github.com/JeremySkinner/FluentValidation/blob/master/Changelog.txt

.NET Framework 4.5

.NET Standard 2.0

.NET Standard 1.6

.NET Standard 1.1

Version Downloads Last updated
12.0.0 4 05/05/2025
12.0.0-preview1 20 01/06/2025
11.11.0 22 11/20/2024
11.10.0 24 09/16/2024
11.9.2 31 06/15/2024
11.9.1 30 05/10/2024
11.9.0 32 01/08/2024
11.8.1 39 11/25/2023
11.8.0 35 10/19/2023
11.7.1 39 08/28/2023
11.7.0 40 08/22/2023
11.6.0 41 08/11/2023
11.5.2 38 07/18/2023
11.5.1 31 08/08/2023
11.5.0 38 08/20/2023
11.4.0 33 05/17/2023
11.3.0 35 08/04/2023
11.2.2 39 10/25/2022
11.2.1 39 10/08/2022
11.2.0 37 12/19/2022
11.1.1 32 07/06/2023
11.1.0 41 07/11/2022
11.0.3 42 04/22/2023
11.0.2 37 03/29/2023
11.0.1 44 01/15/2023
11.0.0 37 12/28/2022
10.4.0 44 12/16/2022
10.3.6 40 04/03/2023
10.3.5 33 08/06/2023
10.3.4 43 03/31/2023
10.3.3 37 06/16/2023
10.3.1 41 05/13/2023
10.3.0 41 11/18/2022
10.2.3 38 05/06/2023
10.2.2 38 05/05/2023
10.2.1 38 12/17/2022
10.2.0 40 12/12/2022
10.1.0 37 11/24/2022
10.0.4 39 11/08/2022
9.5.4 38 04/21/2023
9.5.3 43 05/16/2023
9.5.2 40 06/15/2023
9.5.1 42 12/27/2022
9.5.0 42 11/08/2022
9.4.0 43 11/08/2022
9.3.0 44 12/14/2022
9.3.0-preview3 40 03/29/2023
9.3.0-preview2 37 01/27/2023
9.3.0-preview1 36 12/16/2022
9.2.2 38 07/29/2023
9.2.1 45 12/22/2022
9.2.0 30 08/12/2023
9.1.3 39 04/01/2023
9.1.2 38 11/26/2022
9.1.1 40 07/01/2023
9.1.0 37 05/02/2023
9.0.1 36 10/28/2022
9.0.0-preview5 32 03/18/2023
9.0.0-preview4 38 08/20/2023
9.0.0-preview3 36 02/26/2023
9.0.0-preview2 41 03/26/2023
9.0.0-preview1 37 11/12/2022
8.6.3 36 12/20/2022
8.6.2 35 05/07/2023
8.6.1 35 11/10/2022
8.6.0 37 11/12/2022
8.5.1 38 12/29/2022
8.5.0 39 12/24/2022
8.5.0-preview5 37 03/29/2023
8.5.0-preview4 41 02/04/2023
8.5.0-preview3 38 02/15/2023
8.5.0-preview2 44 04/15/2023
8.5.0-preview1 35 02/20/2023
8.4.0 41 11/18/2022
8.3.0 40 12/14/2022
8.2.3 35 11/27/2022
8.2.2 38 05/14/2023
8.2.1 39 08/27/2022
8.2.0 43 11/10/2022
8.1.3 38 11/23/2022
8.1.2 42 11/21/2022
8.1.1 41 04/18/2023
8.1.0 36 11/21/2022
8.1.0-preview2 38 01/14/2023
8.1.0-preview1 37 04/08/2023
8.0.101 34 05/17/2023
8.0.100 38 11/22/2022
8.0.0 36 11/15/2022
8.0.0-rc1 32 09/28/2023
8.0.0-preview4 36 08/10/2023
8.0.0-preview3 38 04/14/2023
8.0.0-preview2 39 11/14/2022
7.6.105 39 11/03/2022
7.6.104 40 05/02/2023
7.6.103 35 07/22/2023
7.6.102 44 11/09/2022
7.6.101 39 07/07/2023
7.6.100 36 04/09/2023
7.6.0 46 02/13/2023
7.6.0-preview1 45 04/02/2023
7.5.2 39 05/15/2023
7.5.1 39 11/23/2022
7.5.0 41 11/12/2022
7.4.0 41 11/18/2022
7.3.4 41 11/11/2022
7.3.3 40 11/07/2022
7.3.2 38 08/07/2023
7.3.1 39 08/04/2023
7.3.0 39 05/17/2023
7.3.0-beta3 29 08/05/2023
7.3.0-beta2 32 08/16/2023
7.3.0-beta1 37 08/20/2023
7.2.1 37 01/16/2023
7.2.0 43 11/21/2022
7.2.0-beta3 34 08/09/2023
7.2.0-beta2 34 08/06/2023
7.2.0-beta1 44 11/25/2022
7.1.1 40 10/25/2022
7.1.0 37 05/17/2023
7.1.0-beta1 35 09/23/2023
7.0.3 40 11/21/2022
7.0.2 35 11/09/2022
7.0.1 40 11/27/2022
7.0.0 36 11/13/2022
7.0.0-beta3 36 07/05/2023
7.0.0-beta2 32 07/30/2023
7.0.0-beta1 39 08/15/2023
6.4.1 29 07/15/2023
6.4.1-beta1 39 08/15/2023
6.4.0 35 04/09/2023
6.4.0-rc4 31 08/16/2023
6.4.0-rc3 39 08/12/2023
6.4.0-rc2 37 07/08/2023
6.4.0-rc1 30 08/02/2023
6.4.0-beta9 33 05/19/2023
6.4.0-beta8 39 08/16/2023
6.4.0-beta7 36 08/09/2023
6.4.0-beta6 43 08/06/2023
6.4.0-beta5 31 08/10/2023
6.4.0-beta4 33 08/15/2023
6.4.0-beta3 31 08/10/2023
6.4.0-beta2 39 08/07/2023
6.4.0-beta10 39 06/21/2023
6.4.0-beta1 41 08/07/2023
6.3.4-alpha 35 02/20/2023
6.3.3-alpha 36 04/30/2023
6.2.1 39 12/22/2022
6.2.1-beta1 36 08/06/2023
6.2.0 48 11/28/2022
6.2.0-beta1 33 11/17/2022
6.1.0 38 08/05/2023
6.0.2 38 12/31/2022
6.0.1 43 11/28/2022
6.0.0 40 11/20/2022
5.6.2 40 04/29/2023
5.6.1 37 12/20/2022
5.5.0 39 11/16/2022
5.4.0 40 02/10/2023
5.3.0 35 11/17/2022
5.2.0 44 12/02/2022
5.1.0 39 12/29/2022
5.0.0.1 34 12/31/2022
4.0.0.1 44 12/14/2022
4.0.0 36 11/28/2022
3.4.6 36 11/06/2022
3.4.0 34 11/12/2022
3.3.1 39 10/28/2022
3.2.0 40 03/11/2023
3.1.0 31 04/06/2023
3.0.0.1 40 12/13/2022
3.0.0 41 04/01/2023
2.0.0 36 12/21/2022
1.3.0 35 05/07/2023