FluentValidation 8.5.0-preview1

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
62
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
63
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
64
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
65
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
66
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
84
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
110
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
126
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
753
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
67
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
95
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
107
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
231
RulesEngine
Rules Engine is a package for abstracting business logic/rules/policies out of the system. This works in a very simple way by giving you an ability to put your rules in a store outside the core logic of the system thus ensuring that any change in rules doesn't affect the core system.
79
RulesEngine
Rules Engine is a package for abstracting business logic/rules/policies out of the system. This works in a very simple way by giving you an ability to put your rules in a store outside the core logic of the system thus ensuring that any change in rules doesn't affect the core system.
90
RulesEngine
Rules Engine is a package for abstracting business logic/rules/policies out of the system. This works in a very simple way by giving you an ability to put your rules in a store outside the core logic of the system thus ensuring that any change in rules doesn't affect the core system.
93
RulesEngine
Rules Engine is a package for abstracting business logic/rules/policies out of the system. This works in a very simple way by giving you an ability to put your rules in a store outside the core logic of the system thus ensuring that any change in rules doesn't affect the core system.
444

FluentValidation 8 is a major release. Please read the upgrade notes at https://fluentvalidation.net/upgrading-to-8 Changes in 8.4.0: * Added simplified version of several messages across all translations to aid with ASP.NET Clientside validation. * New enum validator for string properties. Changes in 8.3.0: * Fix issue in ASP.NET Core integration with GetServiceProvider not working correctly when invoked against a CustomContext/MessageBuilderContext. * Improved how LanguageStringSource works with error-code overrides. * Fix thread-safety issue with use of PropertyValidatorOptions.Empty (now removed). * Improved how calls to When/Unless are handled internally. * DelegatingValidator is now marked as deprecated. * Improvements to Croatian language translations. * Improvements to Georgian language translations. * Resolved subtle bug where top-level WhenAsync wouldn't work correctly when wrapping a top-level call to When. Changes in 8.2.3: * Fix issue in WebApi integration where DataAnnotations validators could generate duplicate messages when in the same project as FluentValidation. Changes in 8.2.2: * Fix FluentValidation.DependencyInjection package name. Changes in 8.2.1: * Resolved issue using InjectValidator with RuleForEach. * Add support for a default IValidatorInterceptor to be registered with the ASP.NET Core Service Provider. Changes in 8.2.0: * Add extensions for injecting child validators using the ASP.NET Core Service Provider. * Implement RuleFor(...).ForEach(...) as an alternative to RuleForEach. * WithLocalizedMessage is deprecated. Use the overload of WithMessage that takes a Func instead. Changes in 8.1.3: * Resolved issue where clientside validation was incorrectly generating metadata for rules with shared conditions. * ScalePrecisionValidator now has a public method in the fluent interface. * Fix placeholder names in ScalePrecisionValidator for consistency. * Updates to Portuguese (Brazil) translations. Changes in 8.1.2: * Fix issue where shared When/Unless conditions didn't execute correctly when used with RuleForEach. Changes in 8.1.1: * Added RuleSetsExecuted property on ValidationResult. * Resolved issue introduced in 8.1 where the shared condition cache does not work correctly with RuleForEach (#970). 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

Version Downloads Last updated
12.0.0 10 05/06/2025
12.0.0-preview1 21 01/03/2025
11.11.0 106 11/20/2024
11.10.0 172 09/20/2024
11.9.2 183 06/27/2024
11.9.1 55 07/22/2024
11.9.0 199 02/05/2024
11.8.1 94 07/22/2024
11.8.0 49 07/22/2024
11.7.1 46 07/22/2024
11.7.0 46 07/22/2024
11.6.0 51 07/22/2024
11.5.2 46 07/22/2024
11.5.1 142 02/04/2024
11.5.0 40 07/22/2024
11.4.0 51 07/17/2024
11.3.0 58 02/04/2024
11.2.2 43 07/22/2024
11.2.1 57 07/22/2024
11.2.0 55 07/22/2024
11.1.1 42 07/22/2024
11.1.0 53 07/13/2024
11.0.3 65 07/22/2024
11.0.2 49 07/22/2024
11.0.1 42 07/22/2024
11.0.0 50 07/22/2024
10.4.0 115 02/04/2024
10.3.6 47 07/22/2024
10.3.5 42 07/22/2024
10.3.4 48 07/17/2024
10.3.3 54 07/17/2024
10.3.1 52 07/22/2024
10.3.0 41 05/29/2024
10.2.3 52 07/22/2024
10.2.2 47 07/22/2024
10.2.1 47 07/22/2024
10.2.0 53 07/22/2024
10.1.0 53 07/22/2024
10.0.4 53 07/22/2024
9.5.4 51 07/22/2024
9.5.3 43 07/22/2024
9.5.2 54 07/22/2024
9.5.1 50 07/22/2024
9.5.0 58 02/09/2024
9.4.0 52 07/22/2024
9.3.0 54 07/22/2024
9.3.0-preview3 56 07/22/2024
9.3.0-preview2 54 07/22/2024
9.3.0-preview1 55 07/22/2024
9.2.2 43 07/22/2024
9.2.1 49 07/18/2024
9.2.0 43 07/22/2024
9.1.3 57 07/22/2024
9.1.2 48 07/22/2024
9.1.1 49 07/22/2024
9.1.0 44 07/22/2024
9.0.1 53 07/22/2024
9.0.0-preview5 48 07/22/2024
9.0.0-preview4 53 07/22/2024
9.0.0-preview3 51 07/22/2024
9.0.0-preview2 50 07/22/2024
9.0.0-preview1 51 07/22/2024
8.6.3 55 07/22/2024
8.6.2 44 07/22/2024
8.6.1 47 07/22/2024
8.6.0 47 07/22/2024
8.5.1 50 07/21/2024
8.5.0 56 07/18/2024
8.5.0-preview5 54 07/22/2024
8.5.0-preview4 45 07/22/2024
8.5.0-preview3 45 07/22/2024
8.5.0-preview2 54 07/22/2024
8.5.0-preview1 51 07/22/2024
8.4.0 52 07/22/2024
8.3.0 57 07/22/2024
8.2.3 54 07/22/2024
8.2.2 49 07/22/2024
8.2.1 48 07/22/2024
8.2.0 51 07/22/2024
8.1.3 49 07/22/2024
8.1.2 47 07/22/2024
8.1.1 40 07/22/2024
8.1.0 53 07/22/2024
8.1.0-preview2 46 07/22/2024
8.1.0-preview1 61 07/22/2024
8.0.101 53 07/22/2024
8.0.100 51 07/17/2024
8.0.0 46 07/22/2024
8.0.0-rc1 56 07/22/2024
8.0.0-preview4 48 07/22/2024
8.0.0-preview3 48 07/22/2024
8.0.0-preview2 52 07/22/2024
7.6.105 49 07/22/2024
7.6.104 46 07/22/2024
7.6.103 42 07/22/2024
7.6.102 45 07/22/2024
7.6.101 41 07/22/2024
7.6.100 48 07/22/2024
7.6.0 56 07/22/2024
7.6.0-preview1 51 07/22/2024
7.5.2 46 07/22/2024
7.5.1 53 06/21/2024
7.5.0 54 07/22/2024
7.4.0 44 07/22/2024
7.3.4 45 07/22/2024
7.3.3 46 07/22/2024
7.3.2 47 07/22/2024
7.3.1 47 07/22/2024
7.3.0 49 07/22/2024
7.3.0-beta3 58 07/22/2024
7.3.0-beta2 52 07/22/2024
7.3.0-beta1 53 07/22/2024
7.2.1 49 07/22/2024
7.2.0 55 07/22/2024
7.2.0-beta3 47 07/22/2024
7.2.0-beta2 60 07/22/2024
7.2.0-beta1 50 07/22/2024
7.1.1 48 07/22/2024
7.1.0 43 07/22/2024
7.1.0-beta1 50 07/22/2024
7.0.3 49 07/22/2024
7.0.2 46 07/22/2024
7.0.1 54 07/22/2024
7.0.0 50 07/22/2024
7.0.0-beta3 40 07/22/2024
7.0.0-beta2 57 07/22/2024
7.0.0-beta1 39 07/22/2024
6.4.1 66 07/22/2024
6.4.1-beta1 67 07/22/2024
6.4.0 58 07/22/2024
6.4.0-rc4 65 07/22/2024
6.4.0-rc3 46 07/22/2024
6.4.0-rc2 55 07/22/2024
6.4.0-rc1 60 07/22/2024
6.4.0-beta9 60 07/22/2024
6.4.0-beta8 75 07/22/2024
6.4.0-beta7 54 07/22/2024
6.4.0-beta6 56 07/22/2024
6.4.0-beta5 61 07/22/2024
6.4.0-beta4 60 07/22/2024
6.4.0-beta3 48 07/22/2024
6.4.0-beta2 53 07/22/2024
6.4.0-beta10 60 07/22/2024
6.4.0-beta1 47 07/22/2024
6.3.4-alpha 54 07/22/2024
6.3.3-alpha 50 07/22/2024
6.2.1 48 07/22/2024
6.2.1-beta1 48 07/22/2024
6.2.0 46 07/22/2024
6.2.0-beta1 55 07/22/2024
6.1.0 49 07/22/2024
6.0.2 44 07/22/2024
6.0.1 43 07/22/2024
6.0.0 53 07/22/2024
5.6.2 50 07/22/2024
5.6.1 49 07/22/2024
5.5.0 45 07/22/2024
5.4.0 57 07/22/2024
5.3.0 60 07/21/2024
5.2.0 46 07/22/2024
5.1.0 60 07/22/2024
5.0.0.1 54 07/22/2024
4.0.0.1 53 07/22/2024
4.0.0 54 07/22/2024
3.4.6 45 07/22/2024
3.4.0 50 07/22/2024
3.3.1 64 07/22/2024
3.2.0 59 07/22/2024
3.1.0 54 07/22/2024
3.0.0.1 46 07/22/2024
3.0.0 50 07/22/2024
2.0.0 47 07/22/2024
1.3.0 52 07/22/2024