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
172
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
174
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
175
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
181
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
185
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
200
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
210
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
422
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
735
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
1,171
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
173
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
193
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
227
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
427
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
500
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.
209
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.
228
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.
296
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.
585
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.
672

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
12.1.1 218 12/04/2025
12.1.0 241 11/04/2025
12.0.0 370 05/06/2025
12.0.0-preview1 124 01/03/2025
11.12.0 98 11/07/2025
11.11.0 369 11/20/2024
11.10.0 392 09/20/2024
11.9.2 287 06/27/2024
11.9.1 151 07/22/2024
11.9.0 306 02/05/2024
11.8.1 193 07/22/2024
11.8.0 153 07/22/2024
11.7.1 128 07/22/2024
11.7.0 140 07/22/2024
11.6.0 156 07/22/2024
11.5.2 146 07/22/2024
11.5.1 301 02/04/2024
11.5.0 141 07/22/2024
11.4.0 145 07/17/2024
11.3.0 167 02/04/2024
11.2.2 150 07/22/2024
11.2.1 155 07/22/2024
11.2.0 155 07/22/2024
11.1.1 143 07/22/2024
11.1.0 148 07/13/2024
11.0.3 159 07/22/2024
11.0.2 148 07/22/2024
11.0.1 140 07/22/2024
11.0.0 150 07/22/2024
10.4.0 255 02/04/2024
10.3.6 140 07/22/2024
10.3.5 131 07/22/2024
10.3.4 159 07/17/2024
10.3.3 155 07/17/2024
10.3.1 161 07/22/2024
10.3.0 142 05/29/2024
10.2.3 160 07/22/2024
10.2.2 140 07/22/2024
10.2.1 128 07/22/2024
10.2.0 146 07/22/2024
10.1.0 151 07/22/2024
10.0.4 164 07/22/2024
9.5.4 164 07/22/2024
9.5.3 145 07/22/2024
9.5.2 155 07/22/2024
9.5.1 136 07/22/2024
9.5.0 159 02/09/2024
9.4.0 148 07/22/2024
9.3.0 156 07/22/2024
9.3.0-preview3 155 07/22/2024
9.3.0-preview2 144 07/22/2024
9.3.0-preview1 175 07/22/2024
9.2.2 141 07/22/2024
9.2.1 140 07/18/2024
9.2.0 133 07/22/2024
9.1.3 162 07/22/2024
9.1.2 142 07/22/2024
9.1.1 135 07/22/2024
9.1.0 144 07/22/2024
9.0.1 151 07/22/2024
9.0.0-preview5 157 07/22/2024
9.0.0-preview4 136 07/22/2024
9.0.0-preview3 153 07/22/2024
9.0.0-preview2 138 07/22/2024
9.0.0-preview1 144 07/22/2024
8.6.3 153 07/22/2024
8.6.2 139 07/22/2024
8.6.1 140 07/22/2024
8.6.0 146 07/22/2024
8.5.1 146 07/21/2024
8.5.0 150 07/18/2024
8.5.0-preview5 150 07/22/2024
8.5.0-preview4 149 07/22/2024
8.5.0-preview3 147 07/22/2024
8.5.0-preview2 158 07/22/2024
8.5.0-preview1 137 07/22/2024
8.4.0 157 07/22/2024
8.3.0 150 07/22/2024
8.2.3 142 07/22/2024
8.2.2 140 07/22/2024
8.2.1 141 07/22/2024
8.2.0 154 07/22/2024
8.1.3 163 07/22/2024
8.1.2 136 07/22/2024
8.1.1 140 07/22/2024
8.1.0 164 07/22/2024
8.1.0-preview2 149 07/22/2024
8.1.0-preview1 151 07/22/2024
8.0.101 149 07/22/2024
8.0.100 138 07/17/2024
8.0.0 140 07/22/2024
8.0.0-rc1 152 07/22/2024
8.0.0-preview4 138 07/22/2024
8.0.0-preview3 147 07/22/2024
8.0.0-preview2 152 07/22/2024
7.6.105 136 07/22/2024
7.6.104 143 07/22/2024
7.6.103 141 07/22/2024
7.6.102 143 07/22/2024
7.6.101 147 07/22/2024
7.6.100 151 07/22/2024
7.6.0 158 07/22/2024
7.6.0-preview1 152 07/22/2024
7.5.2 137 07/22/2024
7.5.1 142 06/21/2024
7.5.0 147 07/22/2024
7.4.0 156 07/22/2024
7.3.4 139 07/22/2024
7.3.3 155 07/22/2024
7.3.2 143 07/22/2024
7.3.1 142 07/22/2024
7.3.0 145 07/22/2024
7.3.0-beta3 155 07/22/2024
7.3.0-beta2 152 07/22/2024
7.3.0-beta1 159 07/22/2024
7.2.1 151 07/22/2024
7.2.0 140 07/22/2024
7.2.0-beta3 139 07/22/2024
7.2.0-beta2 154 07/22/2024
7.2.0-beta1 172 07/22/2024
7.1.1 140 07/22/2024
7.1.0 133 07/22/2024
7.1.0-beta1 144 07/22/2024
7.0.3 146 07/22/2024
7.0.2 138 07/22/2024
7.0.1 159 07/22/2024
7.0.0 137 07/22/2024
7.0.0-beta3 136 07/22/2024
7.0.0-beta2 151 07/22/2024
7.0.0-beta1 132 07/22/2024
6.4.1 162 07/22/2024
6.4.1-beta1 173 07/22/2024
6.4.0 149 07/22/2024
6.4.0-rc4 177 07/22/2024
6.4.0-rc3 145 07/22/2024
6.4.0-rc2 161 07/22/2024
6.4.0-rc1 159 07/22/2024
6.4.0-beta9 186 07/22/2024
6.4.0-beta8 185 07/22/2024
6.4.0-beta7 148 07/22/2024
6.4.0-beta6 159 07/22/2024
6.4.0-beta5 164 07/22/2024
6.4.0-beta4 158 07/22/2024
6.4.0-beta3 153 07/22/2024
6.4.0-beta2 154 07/22/2024
6.4.0-beta10 169 07/22/2024
6.4.0-beta1 131 07/22/2024
6.3.4-alpha 154 07/22/2024
6.3.3-alpha 140 07/22/2024
6.2.1 149 07/22/2024
6.2.1-beta1 150 07/22/2024
6.2.0 144 07/22/2024
6.2.0-beta1 151 07/22/2024
6.1.0 152 07/22/2024
6.0.2 138 07/22/2024
6.0.1 146 07/22/2024
6.0.0 149 07/22/2024
5.6.2 151 07/22/2024
5.6.1 145 07/22/2024
5.5.0 157 07/22/2024
5.4.0 152 07/22/2024
5.3.0 150 07/21/2024
5.2.0 146 07/22/2024
5.1.0 153 07/22/2024
5.0.0.1 144 07/22/2024
4.0.0.1 150 07/22/2024
4.0.0 155 07/22/2024
3.4.6 138 07/22/2024
3.4.0 175 07/22/2024
3.3.1 166 07/22/2024
3.2.0 161 07/22/2024
3.1.0 154 07/22/2024
3.0.0.1 137 07/22/2024
3.0.0 165 07/22/2024
2.0.0 135 07/22/2024
1.3.0 152 07/22/2024