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
181
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
185
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
194
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
196
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
211
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
219
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
432
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
773
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
1,188
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
182
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
199
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
237
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
438
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
523
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.
219
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.
237
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.
305
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.
597
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.
701

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
12.1.1 259 12/04/2025
12.1.0 252 11/04/2025
12.0.0 380 05/06/2025
12.0.0-preview1 135 01/03/2025
11.12.0 111 11/07/2025
11.11.0 379 11/20/2024
11.10.0 409 09/20/2024
11.9.2 296 06/27/2024
11.9.1 162 07/22/2024
11.9.0 320 02/05/2024
11.8.1 199 07/22/2024
11.8.0 165 07/22/2024
11.7.1 141 07/22/2024
11.7.0 150 07/22/2024
11.6.0 168 07/22/2024
11.5.2 155 07/22/2024
11.5.1 316 02/04/2024
11.5.0 155 07/22/2024
11.4.0 155 07/17/2024
11.3.0 176 02/04/2024
11.2.2 161 07/22/2024
11.2.1 168 07/22/2024
11.2.0 163 07/22/2024
11.1.1 150 07/22/2024
11.1.0 160 07/13/2024
11.0.3 168 07/22/2024
11.0.2 157 07/22/2024
11.0.1 152 07/22/2024
11.0.0 163 07/22/2024
10.4.0 265 02/04/2024
10.3.6 150 07/22/2024
10.3.5 139 07/22/2024
10.3.4 169 07/17/2024
10.3.3 164 07/17/2024
10.3.1 170 07/22/2024
10.3.0 152 05/29/2024
10.2.3 173 07/22/2024
10.2.2 153 07/22/2024
10.2.1 140 07/22/2024
10.2.0 155 07/22/2024
10.1.0 160 07/22/2024
10.0.4 176 07/22/2024
9.5.4 173 07/22/2024
9.5.3 152 07/22/2024
9.5.2 165 07/22/2024
9.5.1 150 07/22/2024
9.5.0 171 02/09/2024
9.4.0 162 07/22/2024
9.3.0 167 07/22/2024
9.3.0-preview3 164 07/22/2024
9.3.0-preview2 153 07/22/2024
9.3.0-preview1 186 07/22/2024
9.2.2 153 07/22/2024
9.2.1 152 07/18/2024
9.2.0 145 07/22/2024
9.1.3 172 07/22/2024
9.1.2 154 07/22/2024
9.1.1 149 07/22/2024
9.1.0 155 07/22/2024
9.0.1 166 07/22/2024
9.0.0-preview5 168 07/22/2024
9.0.0-preview4 144 07/22/2024
9.0.0-preview3 163 07/22/2024
9.0.0-preview2 145 07/22/2024
9.0.0-preview1 153 07/22/2024
8.6.3 163 07/22/2024
8.6.2 152 07/22/2024
8.6.1 149 07/22/2024
8.6.0 159 07/22/2024
8.5.1 155 07/21/2024
8.5.0 158 07/18/2024
8.5.0-preview5 159 07/22/2024
8.5.0-preview4 159 07/22/2024
8.5.0-preview3 159 07/22/2024
8.5.0-preview2 172 07/22/2024
8.5.0-preview1 148 07/22/2024
8.4.0 170 07/22/2024
8.3.0 164 07/22/2024
8.2.3 151 07/22/2024
8.2.2 155 07/22/2024
8.2.1 156 07/22/2024
8.2.0 162 07/22/2024
8.1.3 173 07/22/2024
8.1.2 149 07/22/2024
8.1.1 149 07/22/2024
8.1.0 177 07/22/2024
8.1.0-preview2 162 07/22/2024
8.1.0-preview1 161 07/22/2024
8.0.101 159 07/22/2024
8.0.100 147 07/17/2024
8.0.0 151 07/22/2024
8.0.0-rc1 163 07/22/2024
8.0.0-preview4 148 07/22/2024
8.0.0-preview3 157 07/22/2024
8.0.0-preview2 163 07/22/2024
7.6.105 145 07/22/2024
7.6.104 154 07/22/2024
7.6.103 151 07/22/2024
7.6.102 153 07/22/2024
7.6.101 156 07/22/2024
7.6.100 159 07/22/2024
7.6.0 167 07/22/2024
7.6.0-preview1 164 07/22/2024
7.5.2 150 07/22/2024
7.5.1 152 06/21/2024
7.5.0 161 07/22/2024
7.4.0 166 07/22/2024
7.3.4 150 07/22/2024
7.3.3 165 07/22/2024
7.3.2 152 07/22/2024
7.3.1 154 07/22/2024
7.3.0 155 07/22/2024
7.3.0-beta3 167 07/22/2024
7.3.0-beta2 163 07/22/2024
7.3.0-beta1 172 07/22/2024
7.2.1 159 07/22/2024
7.2.0 149 07/22/2024
7.2.0-beta3 150 07/22/2024
7.2.0-beta2 163 07/22/2024
7.2.0-beta1 183 07/22/2024
7.1.1 149 07/22/2024
7.1.0 143 07/22/2024
7.1.0-beta1 155 07/22/2024
7.0.3 155 07/22/2024
7.0.2 148 07/22/2024
7.0.1 167 07/22/2024
7.0.0 148 07/22/2024
7.0.0-beta3 156 07/22/2024
7.0.0-beta2 160 07/22/2024
7.0.0-beta1 142 07/22/2024
6.4.1 172 07/22/2024
6.4.1-beta1 188 07/22/2024
6.4.0 160 07/22/2024
6.4.0-rc4 188 07/22/2024
6.4.0-rc3 154 07/22/2024
6.4.0-rc2 169 07/22/2024
6.4.0-rc1 169 07/22/2024
6.4.0-beta9 198 07/22/2024
6.4.0-beta8 195 07/22/2024
6.4.0-beta7 159 07/22/2024
6.4.0-beta6 174 07/22/2024
6.4.0-beta5 174 07/22/2024
6.4.0-beta4 170 07/22/2024
6.4.0-beta3 167 07/22/2024
6.4.0-beta2 162 07/22/2024
6.4.0-beta10 178 07/22/2024
6.4.0-beta1 141 07/22/2024
6.3.4-alpha 167 07/22/2024
6.3.3-alpha 149 07/22/2024
6.2.1 157 07/22/2024
6.2.1-beta1 159 07/22/2024
6.2.0 152 07/22/2024
6.2.0-beta1 162 07/22/2024
6.1.0 160 07/22/2024
6.0.2 147 07/22/2024
6.0.1 161 07/22/2024
6.0.0 156 07/22/2024
5.6.2 159 07/22/2024
5.6.1 155 07/22/2024
5.5.0 167 07/22/2024
5.4.0 162 07/22/2024
5.3.0 163 07/21/2024
5.2.0 157 07/22/2024
5.1.0 167 07/22/2024
5.0.0.1 153 07/22/2024
4.0.0.1 160 07/22/2024
4.0.0 170 07/22/2024
3.4.6 148 07/22/2024
3.4.0 186 07/22/2024
3.3.1 176 07/22/2024
3.2.0 169 07/22/2024
3.1.0 163 07/22/2024
3.0.0.1 145 07/22/2024
3.0.0 174 07/22/2024
2.0.0 144 07/22/2024
1.3.0 161 07/22/2024