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
121
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
122
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
141
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
162
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
231
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
323
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
1,049
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
119
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
125
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
149
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
156
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
248
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
352
FluentValidation.DependencyInjectionExtensions
Dependenecy injection extensions for FluentValidation
118
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.
150
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.
160
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.
212
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.
292
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.
539

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
12.1.0 71 11/04/2025
12.0.0 255 05/06/2025
12.0.0-preview1 72 01/03/2025
11.12.0 30 11/07/2025
11.11.0 225 11/20/2024
11.10.0 314 09/20/2024
11.9.2 237 06/27/2024
11.9.1 111 07/22/2024
11.9.0 259 02/05/2024
11.8.1 145 07/22/2024
11.8.0 102 07/22/2024
11.7.1 90 07/22/2024
11.7.0 99 07/22/2024
11.6.0 100 07/22/2024
11.5.2 93 07/22/2024
11.5.1 239 02/04/2024
11.5.0 94 07/22/2024
11.4.0 98 07/17/2024
11.3.0 117 02/04/2024
11.2.2 100 07/22/2024
11.2.1 104 07/22/2024
11.2.0 106 07/22/2024
11.1.1 98 07/22/2024
11.1.0 100 07/13/2024
11.0.3 109 07/22/2024
11.0.2 96 07/22/2024
11.0.1 91 07/22/2024
11.0.0 100 07/22/2024
10.4.0 200 02/04/2024
10.3.6 97 07/22/2024
10.3.5 89 07/22/2024
10.3.4 105 07/17/2024
10.3.3 106 07/17/2024
10.3.1 111 07/22/2024
10.3.0 92 05/29/2024
10.2.3 104 07/22/2024
10.2.2 96 07/22/2024
10.2.1 88 07/22/2024
10.2.0 99 07/22/2024
10.1.0 103 07/22/2024
10.0.4 103 07/22/2024
9.5.4 112 07/22/2024
9.5.3 97 07/22/2024
9.5.2 107 07/22/2024
9.5.1 96 07/22/2024
9.5.0 114 02/09/2024
9.4.0 99 07/22/2024
9.3.0 96 07/22/2024
9.3.0-preview3 101 07/22/2024
9.3.0-preview2 100 07/22/2024
9.3.0-preview1 102 07/22/2024
9.2.2 99 07/22/2024
9.2.1 101 07/18/2024
9.2.0 89 07/22/2024
9.1.3 108 07/22/2024
9.1.2 99 07/22/2024
9.1.1 91 07/22/2024
9.1.0 99 07/22/2024
9.0.1 107 07/22/2024
9.0.0-preview5 100 07/22/2024
9.0.0-preview4 93 07/22/2024
9.0.0-preview3 105 07/22/2024
9.0.0-preview2 94 07/22/2024
9.0.0-preview1 99 07/22/2024
8.6.3 104 07/22/2024
8.6.2 88 07/22/2024
8.6.1 98 07/22/2024
8.6.0 99 07/22/2024
8.5.1 100 07/21/2024
8.5.0 103 07/18/2024
8.5.0-preview5 107 07/22/2024
8.5.0-preview4 97 07/22/2024
8.5.0-preview3 91 07/22/2024
8.5.0-preview2 107 07/22/2024
8.5.0-preview1 95 07/22/2024
8.4.0 100 07/22/2024
8.3.0 107 07/22/2024
8.2.3 98 07/22/2024
8.2.2 94 07/22/2024
8.2.1 100 07/22/2024
8.2.0 107 07/22/2024
8.1.3 106 07/22/2024
8.1.2 89 07/22/2024
8.1.1 88 07/22/2024
8.1.0 105 07/22/2024
8.1.0-preview2 95 07/22/2024
8.1.0-preview1 108 07/22/2024
8.0.101 105 07/22/2024
8.0.100 94 07/17/2024
8.0.0 93 07/22/2024
8.0.0-rc1 108 07/22/2024
8.0.0-preview4 95 07/22/2024
8.0.0-preview3 98 07/22/2024
8.0.0-preview2 106 07/22/2024
7.6.105 97 07/22/2024
7.6.104 101 07/22/2024
7.6.103 90 07/22/2024
7.6.102 102 07/22/2024
7.6.101 95 07/22/2024
7.6.100 107 07/22/2024
7.6.0 108 07/22/2024
7.6.0-preview1 100 07/22/2024
7.5.2 98 07/22/2024
7.5.1 87 06/21/2024
7.5.0 103 07/22/2024
7.4.0 91 07/22/2024
7.3.4 93 07/22/2024
7.3.3 97 07/22/2024
7.3.2 94 07/22/2024
7.3.1 94 07/22/2024
7.3.0 93 07/22/2024
7.3.0-beta3 107 07/22/2024
7.3.0-beta2 100 07/22/2024
7.3.0-beta1 110 07/22/2024
7.2.1 102 07/22/2024
7.2.0 103 07/22/2024
7.2.0-beta3 97 07/22/2024
7.2.0-beta2 107 07/22/2024
7.2.0-beta1 101 07/22/2024
7.1.1 95 07/22/2024
7.1.0 91 07/22/2024
7.1.0-beta1 91 07/22/2024
7.0.3 96 07/22/2024
7.0.2 93 07/22/2024
7.0.1 118 07/22/2024
7.0.0 98 07/22/2024
7.0.0-beta3 91 07/22/2024
7.0.0-beta2 95 07/22/2024
7.0.0-beta1 86 07/22/2024
6.4.1 112 07/22/2024
6.4.1-beta1 122 07/22/2024
6.4.0 101 07/22/2024
6.4.0-rc4 122 07/22/2024
6.4.0-rc3 96 07/22/2024
6.4.0-rc2 108 07/22/2024
6.4.0-rc1 108 07/22/2024
6.4.0-beta9 135 07/22/2024
6.4.0-beta8 129 07/22/2024
6.4.0-beta7 105 07/22/2024
6.4.0-beta6 108 07/22/2024
6.4.0-beta5 108 07/22/2024
6.4.0-beta4 110 07/22/2024
6.4.0-beta3 92 07/22/2024
6.4.0-beta2 109 07/22/2024
6.4.0-beta10 116 07/22/2024
6.4.0-beta1 88 07/22/2024
6.3.4-alpha 101 07/22/2024
6.3.3-alpha 94 07/22/2024
6.2.1 95 07/22/2024
6.2.1-beta1 92 07/22/2024
6.2.0 87 07/22/2024
6.2.0-beta1 104 07/22/2024
6.1.0 98 07/22/2024
6.0.2 89 07/22/2024
6.0.1 94 07/22/2024
6.0.0 106 07/22/2024
5.6.2 108 07/22/2024
5.6.1 100 07/22/2024
5.5.0 100 07/22/2024
5.4.0 109 07/22/2024
5.3.0 105 07/21/2024
5.2.0 103 07/22/2024
5.1.0 109 07/22/2024
5.0.0.1 103 07/22/2024
4.0.0.1 108 07/22/2024
4.0.0 108 07/22/2024
3.4.6 93 07/22/2024
3.4.0 94 07/22/2024
3.3.1 103 07/22/2024
3.2.0 116 07/22/2024
3.1.0 103 07/22/2024
3.0.0.1 88 07/22/2024
3.0.0 108 07/22/2024
2.0.0 89 07/22/2024
1.3.0 105 07/22/2024