FluentValidation 7.3.0-beta2

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.DependencyInjectionExtensions
AspNetCore integration for FluentValidation
 45
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
 43
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
 44
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
 46
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
 48
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
 3,186
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
 9,221
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
 11,504
FluentValidation.DependencyInjectionExtensions
Dependenecy injection extensions for FluentValidation
 45

Changes in 7.3: * Major changes to AspNetCore integration including better support for collections and implicit validation (opt-in) * Marked ValidationException as serializable when running on full framework * Fix - Updated EnumValidator's Flags support to handle the ~0 value * Fix - TestHelper checking for child validator would respond with the wrong type * Fix - Updated translations for some validators * Deprected the ValidatorAttribute. It is recommended to use the Service Provider infrastructure (AspNetCore) or an IoC container instead. Changes in 7.2: * Updated AspNetCore integration to support IValidatableObject * Updated AspNetCore integration to allow mixing multiple validation strategies in the same model * Updated AspNetCore integration to support RulesetForClientsideMessagesAttribute * Fix - Property names were not generated properly for nested types when using AddFailure inside a Custom validator * Fix - NullReferenceException when using CustomAsync but the validator is invoked synchronously * Fix - Clientside integration in AspNetCore being resolved from the root-level service provider * Fix - Allow empty string to be passed to OverridePropertyName Changes in 7.1.1: * Fix - Incorrect property name was generated when using RuleForEach combined with SetValidator * Fix - Nesting async validators inside DependentRules didn't wait for completion Changes in 7.1: * New RuleFor().Custom() method as a replacement for the old, deprecated Custom method * Improved messages in the ShouldHaveChildValidator test extension * Test helper works with nested properties * Additional overload of WithState allows access to collection item when used with RuleForEach * Fix - Wrong values were generated as part of the MVC5 clientside integration for MinLength and MaxLength validators * Fix - AssemblyScanner now excludes abstract and generic types * Fix - InvalidCastException when using lazy WithMessage combined with RuleForEach * WithState enhanced to allow access to the ValidationContext Changes in 7.0: 7.0 is a major release that contains several breaking changes, especially with Localization. If you use FluentValidation's support for localization please read the updated documentation: https://github.com/JeremySkinner/FluentValidation/wiki/f.-Localization * Localization rewrite to not require satellite assemblies * New 'Custom' rule method replaces the root-level Custom method * Switch to Netstandard based build process * Assemblies are now signed / strongly named - see https://github.com/JeremySkinner/FluentValidation/wiki/l.-Strong-naming-and-signed-packages * Fix - Possible NullReferenceException in the AspNetCore clientside integration for length validators * Fix - Don't clear the ModelValidatorProviders collection by default in the AspNetCore integration (added new ClearValidatorProviders property to control this behaviour) * Fix - Ensure IValidatorFactory is resolved from request scope in asp.net core integration * Fix - Property getter that throws an exception causes validation to fail in WebApi integration * Fix - Issue in AspNetCore integration where we tried to resolve a collection validator in some situations where a class validator should be used * Fix - Incorrect clientside validation attributes generated for email validator and credit card validator in the asp.net core integration * Fix - Child model validation now works in webapi integration * Improve splitting of PascalCased property names to support uppercase character sequences * ValidationResult.ErrorCode property now always returns the type of the PropertyValidator that generated the message, unless it's been explicitly overriden Full release notes can be found at https://github.com/JeremySkinner/FluentValidation/blob/master/Changelog.txt

.NET Framework 4.5

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.NET Standard 1.0

Version Downloads Last updated
12.1.1 1 12/08/2025
12.1.0 4 11/05/2025
12.0.0 10 05/05/2025
12.0.0-preview1 15 01/04/2025
11.12.0 5 11/06/2025
11.11.0 20 11/23/2024
11.10.0 25 09/16/2024
11.9.2 30 06/12/2024
11.9.1 30 05/04/2024
11.9.0 29 01/01/2024
11.8.1 33 11/29/2023
11.8.0 29 10/20/2023
11.7.1 32 09/05/2023
11.7.0 33 09/11/2023
11.6.0 53 08/16/2023
11.5.2 32 06/05/2023
11.5.1 32 09/11/2023
11.5.0 53 09/07/2023
11.4.0 31 03/18/2023
11.3.0 3,220 11/15/2022
11.2.2 9,233 09/14/2022
11.2.1 60 09/09/2022
11.2.0 92 08/24/2022
11.1.1 68 08/18/2022
11.1.0 99 09/08/2022
11.0.3 65 09/10/2022
11.0.2 79 08/21/2022
11.0.1 39 08/24/2022
11.0.0 39 09/08/2022
10.4.0 42 08/25/2022
10.3.6 47 07/21/2022
10.3.5 32 09/07/2022
10.3.4 61 06/27/2022
10.3.3 11,490 06/27/2022
10.3.1 49 09/09/2022
10.3.0 69 09/09/2022
10.2.3 65 09/07/2022
10.2.2 57 08/24/2022
10.2.1 38 09/03/2022
10.2.0 71 09/09/2022
10.1.0 36 08/22/2022
10.0.4 60 09/08/2022
9.5.4 60 07/03/2022
9.5.3 60 09/07/2022
9.5.2 57 09/08/2022
9.5.1 35 09/08/2022
9.5.0 59 09/08/2022
9.4.0 64 08/23/2022
9.3.0 98 09/02/2022
9.3.0-preview3 50 09/22/2022
9.3.0-preview2 73 09/21/2022
9.3.0-preview1 63 09/22/2022
9.2.2 85 09/04/2022
9.2.1 42 09/08/2022
9.2.0 60 08/21/2022
9.1.3 62 09/07/2022
9.1.2 41 08/22/2022
9.1.1 37 09/08/2022
9.1.0 40 08/22/2022
9.0.1 36 09/08/2022
9.0.0-preview5 71 10/14/2022
9.0.0-preview4 32 09/21/2022
9.0.0-preview3 44 07/03/2022
9.0.0-preview2 44 10/14/2022
9.0.0-preview1 32 09/26/2022
8.6.3 77 08/20/2022
8.6.2 36 09/02/2022
8.6.1 33 09/09/2022
8.6.0 43 09/08/2022
8.5.1 39 08/25/2022
8.5.0 41 08/25/2022
8.5.0-preview5 48 09/21/2022
8.5.0-preview4 38 09/26/2022
8.5.0-preview3 34 09/21/2022
8.5.0-preview2 37 09/21/2022
8.5.0-preview1 49 06/28/2022
8.4.0 98 09/02/2022
8.3.0 36 09/09/2022
8.2.3 42 08/25/2022
8.2.2 40 08/23/2022
8.2.1 39 09/08/2022
8.2.0 36 09/02/2022
8.1.3 43 09/07/2022
8.1.2 59 09/02/2022
8.1.1 56 09/08/2022
8.1.0 38 09/05/2022
8.1.0-preview2 80 09/22/2022
8.1.0-preview1 44 09/22/2022
8.0.101 84 09/10/2022
8.0.100 43 09/02/2022
8.0.0 43 09/02/2022
8.0.0-rc1 39 09/09/2022
8.0.0-preview4 33 09/22/2022
8.0.0-preview3 41 09/23/2022
8.0.0-preview2 43 10/14/2022
7.6.105 34 09/08/2022
7.6.104 36 09/09/2022
7.6.103 59 08/21/2022
7.6.102 32 09/08/2022
7.6.101 45 09/07/2022
7.6.100 44 09/11/2022
7.6.0 78 08/24/2022
7.6.0-preview1 33 10/14/2022
7.5.2 36 09/08/2022
7.5.1 68 07/13/2022
7.5.0 43 08/21/2022
7.4.0 56 09/07/2022
7.3.4 35 09/07/2022
7.3.3 37 09/07/2022
7.3.2 60 08/21/2022
7.3.1 40 09/07/2022
7.3.0 50 09/02/2022
7.3.0-beta3 39 09/07/2022
7.3.0-beta2 83 06/27/2022
7.3.0-beta1 37 09/03/2022
7.2.1 37 09/07/2022
7.2.0 61 08/31/2022
7.2.0-beta3 38 09/03/2022
7.2.0-beta2 35 09/08/2022
7.2.0-beta1 33 09/03/2022
7.1.1 69 09/08/2022
7.1.0 74 09/02/2022
7.1.0-beta1 30 09/02/2022
7.0.3 64 08/28/2022
7.0.2 34 09/03/2022
7.0.1 37 09/02/2022
7.0.0 60 07/21/2022
7.0.0-beta3 37 09/08/2022
7.0.0-beta2 49 08/23/2022
7.0.0-beta1 33 09/08/2022
6.4.1 36 09/07/2022
6.4.1-beta1 52 09/08/2022
6.4.0 40 09/08/2022
6.4.0-rc4 32 09/08/2022
6.4.0-rc3 65 09/04/2022
6.4.0-rc2 56 09/10/2022
6.4.0-rc1 52 09/02/2022
6.4.0-beta9 54 09/09/2022
6.4.0-beta8 39 09/12/2022
6.4.0-beta7 42 09/08/2022
6.4.0-beta6 56 09/01/2022
6.4.0-beta5 57 09/08/2022
6.4.0-beta4 43 07/18/2022
6.4.0-beta3 56 09/07/2022
6.4.0-beta2 41 08/24/2022
6.4.0-beta10 42 09/09/2022
6.4.0-beta1 34 09/14/2022
6.3.4-alpha 59 09/14/2022
6.3.3-alpha 59 09/10/2022
6.2.1 43 09/09/2022
6.2.1-beta1 49 09/08/2022
6.2.0 61 09/04/2022
6.2.0-beta1 34 09/08/2022
6.1.0 68 09/08/2022
6.0.2 36 09/09/2022
6.0.1 35 09/08/2022
6.0.0 37 09/04/2022
5.6.2 59 08/24/2022
5.6.1 71 09/03/2022
5.5.0 47 08/23/2022
5.4.0 39 09/03/2022
5.3.0 60 09/08/2022
5.2.0 64 09/09/2022
5.1.0 54 08/23/2022
5.0.0.1 38 09/09/2022
4.0.0.1 38 08/24/2022
4.0.0 45 09/02/2022
3.4.6 38 09/02/2022
3.4.0 35 08/23/2022
3.3.1 57 09/02/2022
3.2.0 61 09/07/2022
3.1.0 40 08/24/2022
3.0.0.1 58 09/08/2022
3.0.0 78 08/26/2022
2.0.0 87 08/26/2022
1.3.0 43 09/02/2022