FluentValidation 8.1.0-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
12
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
10
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
9
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
9
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
8
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
7
FluentValidation.DependencyInjectionExtensions
Dependenecy injection extensions for FluentValidation
7
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
7
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
6

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.

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 5 12/12/2025
12.1.0 7 12/14/2025
12.0.0 5 12/12/2025
12.0.0-preview1 2 12/11/2025
11.12.0 6 12/14/2025
11.11.0 5 12/15/2025
11.10.0 3 12/18/2025
11.9.2 6 12/28/2025
11.9.1 3 12/11/2025
11.9.0 5 12/17/2025
11.8.1 5 12/28/2025
11.8.0 3 12/12/2025
11.7.1 4 12/15/2025
11.7.0 3 12/14/2025
11.6.0 4 12/13/2025
11.5.2 2 12/13/2025
11.5.1 3 12/12/2025
11.5.0 2 12/28/2025
11.4.0 4 12/28/2025
11.3.0 4 12/28/2025
11.2.2 5 12/13/2025
11.2.1 6 12/13/2025
11.2.0 5 12/25/2025
11.1.1 2 12/28/2025
11.1.0 3 12/22/2025
11.0.3 4 12/13/2025
11.0.2 4 12/14/2025
11.0.1 5 12/14/2025
11.0.0 5 12/27/2025
10.4.0 2 12/28/2025
10.3.6 3 12/21/2025
10.3.5 4 12/22/2025
10.3.4 4 12/18/2025
10.3.3 3 12/13/2025
10.3.1 5 12/28/2025
10.3.0 2 12/12/2025
10.2.3 5 12/11/2025
10.2.2 3 12/18/2025
10.2.1 6 12/11/2025
10.2.0 4 12/13/2025
10.1.0 1 12/28/2025
10.0.4 3 12/28/2025
9.5.4 7 12/18/2025
9.5.3 2 12/28/2025
9.5.2 4 12/09/2025
9.5.1 7 12/24/2025
9.5.0 6 12/13/2025
9.4.0 4 12/28/2025
9.3.0 2 12/28/2025
9.3.0-preview3 2 12/28/2025
9.3.0-preview2 1 12/28/2025
9.3.0-preview1 4 12/28/2025
9.2.2 6 12/14/2025
9.2.1 3 12/28/2025
9.2.0 4 12/20/2025
9.1.3 6 12/11/2025
9.1.2 6 12/13/2025
9.1.1 4 12/18/2025
9.1.0 5 12/20/2025
9.0.1 3 12/13/2025
9.0.0-preview5 6 12/23/2025
9.0.0-preview4 4 12/14/2025
9.0.0-preview3 2 12/18/2025
9.0.0-preview2 3 12/28/2025
9.0.0-preview1 3 12/28/2025
8.6.3 7 12/14/2025
8.6.2 5 12/25/2025
8.6.1 3 12/20/2025
8.6.0 4 12/15/2025
8.5.1 3 12/28/2025
8.5.0 5 12/14/2025
8.5.0-preview5 3 12/23/2025
8.5.0-preview4 3 12/13/2025
8.5.0-preview3 5 12/24/2025
8.5.0-preview2 4 12/18/2025
8.5.0-preview1 4 12/15/2025
8.4.0 6 12/16/2025
8.3.0 5 12/20/2025
8.2.3 4 12/20/2025
8.2.2 6 12/13/2025
8.2.1 3 12/20/2025
8.2.0 2 12/28/2025
8.1.3 5 12/20/2025
8.1.2 2 12/28/2025
8.1.1 3 12/28/2025
8.1.0 5 12/28/2025
8.1.0-preview2 2 12/28/2025
8.1.0-preview1 2 12/28/2025
8.0.101 6 12/14/2025
8.0.100 3 12/28/2025
8.0.0 5 12/13/2025
8.0.0-rc1 3 12/28/2025
8.0.0-preview4 4 12/22/2025
8.0.0-preview3 3 12/25/2025
8.0.0-preview2 3 12/28/2025
7.6.105 4 12/21/2025
7.6.104 9 12/24/2025
7.6.103 4 12/18/2025
7.6.102 4 12/15/2025
7.6.101 5 12/28/2025
7.6.100 6 12/13/2025
7.6.0 4 12/21/2025
7.6.0-preview1 4 12/14/2025
7.5.2 9 12/13/2025
7.5.1 4 12/20/2025
7.5.0 3 12/25/2025
7.4.0 3 01/03/2026
7.3.4 4 12/18/2025
7.3.3 2 12/28/2025
7.3.2 8 12/14/2025
7.3.1 5 12/15/2025
7.3.0 1 12/28/2025
7.3.0-beta3 5 12/28/2025
7.3.0-beta2 7 12/21/2025
7.3.0-beta1 2 12/28/2025
7.2.1 2 12/20/2025
7.2.0 2 12/28/2025
7.2.0-beta3 6 12/28/2025
7.2.0-beta2 3 12/28/2025
7.2.0-beta1 2 12/28/2025
7.1.1 8 12/15/2025
7.1.0 3 12/28/2025
7.1.0-beta1 5 12/18/2025
7.0.3 5 12/28/2025
7.0.2 4 12/28/2025
7.0.1 5 12/12/2025
7.0.0 3 12/14/2025
7.0.0-beta3 2 12/17/2025
7.0.0-beta2 6 12/24/2025
7.0.0-beta1 4 12/15/2025
6.4.1 5 12/20/2025
6.4.1-beta1 3 12/28/2025
6.4.0 5 12/18/2025
6.4.0-rc4 6 12/28/2025
6.4.0-rc3 4 12/28/2025
6.4.0-rc2 2 12/28/2025
6.4.0-rc1 3 12/28/2025
6.4.0-beta9 4 12/18/2025
6.4.0-beta8 3 12/28/2025
6.4.0-beta7 6 12/13/2025
6.4.0-beta6 5 12/13/2025
6.4.0-beta5 3 12/28/2025
6.4.0-beta4 2 12/28/2025
6.4.0-beta3 3 12/27/2025
6.4.0-beta2 2 12/28/2025
6.4.0-beta10 3 12/28/2025
6.4.0-beta1 4 12/13/2025
6.3.4-alpha 5 12/28/2025
6.3.3-alpha 6 12/23/2025
6.2.1 5 12/14/2025
6.2.1-beta1 3 12/28/2025
6.2.0 3 12/13/2025
6.2.0-beta1 2 12/28/2025
6.1.0 4 01/08/2026
6.0.2 5 12/14/2025
6.0.1 6 12/09/2025
6.0.0 8 12/14/2025
5.6.2 5 01/05/2026
5.6.1 4 12/14/2025
5.5.0 6 12/14/2025
5.4.0 3 01/12/2026
5.3.0 2 01/13/2026
5.2.0 6 12/14/2025
5.1.0 6 12/11/2025
5.0.0.1 3 12/28/2025
4.0.0.1 1 12/28/2025
4.0.0 5 12/10/2025
3.4.6 4 12/14/2025
3.4.0 7 12/14/2025
3.3.1 4 12/14/2025
3.2.0 7 12/14/2025
3.1.0 7 12/12/2025
3.0.0.1 3 12/12/2025
3.0.0 5 12/20/2025
2.0.0 5 12/29/2025
1.3.0 7 12/13/2025