FluentValidation 8.1.0-preview2

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
123
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
124
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
144
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
163
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
253
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
365
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
1,059
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
123
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
126
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
132
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
153
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
168
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
277
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
361
FluentValidation.DependencyInjectionExtensions
Dependenecy injection extensions for FluentValidation
123
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.
152
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.
163
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.
217
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.
340
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.
542

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. 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
12.1.1 12 12/04/2025
12.1.0 93 11/04/2025
12.0.0 292 05/06/2025
12.0.0-preview1 79 01/03/2025
11.12.0 32 11/07/2025
11.11.0 231 11/20/2024
11.10.0 323 09/20/2024
11.9.2 243 06/27/2024
11.9.1 115 07/22/2024
11.9.0 263 02/05/2024
11.8.1 149 07/22/2024
11.8.0 106 07/22/2024
11.7.1 93 07/22/2024
11.7.0 102 07/22/2024
11.6.0 104 07/22/2024
11.5.2 99 07/22/2024
11.5.1 244 02/04/2024
11.5.0 98 07/22/2024
11.4.0 101 07/17/2024
11.3.0 125 02/04/2024
11.2.2 103 07/22/2024
11.2.1 107 07/22/2024
11.2.0 109 07/22/2024
11.1.1 104 07/22/2024
11.1.0 105 07/13/2024
11.0.3 115 07/22/2024
11.0.2 100 07/22/2024
11.0.1 95 07/22/2024
11.0.0 101 07/22/2024
10.4.0 202 02/04/2024
10.3.6 101 07/22/2024
10.3.5 93 07/22/2024
10.3.4 109 07/17/2024
10.3.3 111 07/17/2024
10.3.1 116 07/22/2024
10.3.0 96 05/29/2024
10.2.3 109 07/22/2024
10.2.2 99 07/22/2024
10.2.1 92 07/22/2024
10.2.0 103 07/22/2024
10.1.0 109 07/22/2024
10.0.4 108 07/22/2024
9.5.4 118 07/22/2024
9.5.3 102 07/22/2024
9.5.2 111 07/22/2024
9.5.1 99 07/22/2024
9.5.0 119 02/09/2024
9.4.0 102 07/22/2024
9.3.0 100 07/22/2024
9.3.0-preview3 105 07/22/2024
9.3.0-preview2 103 07/22/2024
9.3.0-preview1 113 07/22/2024
9.2.2 101 07/22/2024
9.2.1 105 07/18/2024
9.2.0 94 07/22/2024
9.1.3 116 07/22/2024
9.1.2 102 07/22/2024
9.1.1 94 07/22/2024
9.1.0 102 07/22/2024
9.0.1 110 07/22/2024
9.0.0-preview5 104 07/22/2024
9.0.0-preview4 97 07/22/2024
9.0.0-preview3 111 07/22/2024
9.0.0-preview2 98 07/22/2024
9.0.0-preview1 103 07/22/2024
8.6.3 108 07/22/2024
8.6.2 91 07/22/2024
8.6.1 101 07/22/2024
8.6.0 103 07/22/2024
8.5.1 104 07/21/2024
8.5.0 105 07/18/2024
8.5.0-preview5 110 07/22/2024
8.5.0-preview4 102 07/22/2024
8.5.0-preview3 96 07/22/2024
8.5.0-preview2 112 07/22/2024
8.5.0-preview1 101 07/22/2024
8.4.0 106 07/22/2024
8.3.0 111 07/22/2024
8.2.3 103 07/22/2024
8.2.2 100 07/22/2024
8.2.1 104 07/22/2024
8.2.0 111 07/22/2024
8.1.3 111 07/22/2024
8.1.2 94 07/22/2024
8.1.1 93 07/22/2024
8.1.0 111 07/22/2024
8.1.0-preview2 100 07/22/2024
8.1.0-preview1 112 07/22/2024
8.0.101 109 07/22/2024
8.0.100 99 07/17/2024
8.0.0 98 07/22/2024
8.0.0-rc1 112 07/22/2024
8.0.0-preview4 100 07/22/2024
8.0.0-preview3 105 07/22/2024
8.0.0-preview2 109 07/22/2024
7.6.105 101 07/22/2024
7.6.104 106 07/22/2024
7.6.103 94 07/22/2024
7.6.102 107 07/22/2024
7.6.101 100 07/22/2024
7.6.100 111 07/22/2024
7.6.0 115 07/22/2024
7.6.0-preview1 107 07/22/2024
7.5.2 101 07/22/2024
7.5.1 91 06/21/2024
7.5.0 111 07/22/2024
7.4.0 99 07/22/2024
7.3.4 96 07/22/2024
7.3.3 101 07/22/2024
7.3.2 101 07/22/2024
7.3.1 98 07/22/2024
7.3.0 101 07/22/2024
7.3.0-beta3 113 07/22/2024
7.3.0-beta2 104 07/22/2024
7.3.0-beta1 116 07/22/2024
7.2.1 108 07/22/2024
7.2.0 107 07/22/2024
7.2.0-beta3 101 07/22/2024
7.2.0-beta2 112 07/22/2024
7.2.0-beta1 107 07/22/2024
7.1.1 100 07/22/2024
7.1.0 94 07/22/2024
7.1.0-beta1 97 07/22/2024
7.0.3 100 07/22/2024
7.0.2 96 07/22/2024
7.0.1 122 07/22/2024
7.0.0 102 07/22/2024
7.0.0-beta3 97 07/22/2024
7.0.0-beta2 99 07/22/2024
7.0.0-beta1 89 07/22/2024
6.4.1 119 07/22/2024
6.4.1-beta1 127 07/22/2024
6.4.0 105 07/22/2024
6.4.0-rc4 127 07/22/2024
6.4.0-rc3 102 07/22/2024
6.4.0-rc2 113 07/22/2024
6.4.0-rc1 113 07/22/2024
6.4.0-beta9 139 07/22/2024
6.4.0-beta8 135 07/22/2024
6.4.0-beta7 108 07/22/2024
6.4.0-beta6 112 07/22/2024
6.4.0-beta5 112 07/22/2024
6.4.0-beta4 113 07/22/2024
6.4.0-beta3 97 07/22/2024
6.4.0-beta2 114 07/22/2024
6.4.0-beta10 122 07/22/2024
6.4.0-beta1 93 07/22/2024
6.3.4-alpha 106 07/22/2024
6.3.3-alpha 99 07/22/2024
6.2.1 103 07/22/2024
6.2.1-beta1 96 07/22/2024
6.2.0 91 07/22/2024
6.2.0-beta1 108 07/22/2024
6.1.0 105 07/22/2024
6.0.2 95 07/22/2024
6.0.1 98 07/22/2024
6.0.0 110 07/22/2024
5.6.2 111 07/22/2024
5.6.1 105 07/22/2024
5.5.0 105 07/22/2024
5.4.0 113 07/22/2024
5.3.0 109 07/21/2024
5.2.0 107 07/22/2024
5.1.0 112 07/22/2024
5.0.0.1 107 07/22/2024
4.0.0.1 113 07/22/2024
4.0.0 114 07/22/2024
3.4.6 99 07/22/2024
3.4.0 98 07/22/2024
3.3.1 108 07/22/2024
3.2.0 122 07/22/2024
3.1.0 106 07/22/2024
3.0.0.1 92 07/22/2024
3.0.0 112 07/22/2024
2.0.0 94 07/22/2024
1.3.0 109 07/22/2024