FluentValidation 9.3.0-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
72
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
71
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
70
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
69
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
67
FluentValidation.DependencyInjectionExtensions
Dependency injection extensions for FluentValidation
67
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
66
FluentValidation.AspNetCore
AspNetCore integration for FluentValidation
65

FluentValidation 9 is a major release. Please read the upgrade notes at https://docs.fluentvalidation.net/en/latest/upgrading-to-9.html Changes in 9.3.0: * Improvements to LanguageManager's lazy loading of resources. * Updates to Persian translations. * Added Bengali translations. * Deprecate IStringSource and its implementors. Use delegates instead. Changes in 9.2.0: * Add inheritance validator * Performance improvements Changes in 9.1.3: * Fix an issue with IncludeRulesNotInRuleSet not working correctly Changes in 9.1.2: * Make the ValidationContext.ThrowOnFailures getter public. Changes in 9.1.1: * Fix an incorrect deprecation message. Changes in 9.1: * Make ruleset separator character splitting consistent * Transform now works with RuleForEach * Introduce constants for rulesets * Resolve issue when attempting to use asynchronous conditions in a synchornous validaiton run * Added asynchronous versions of the TestHelper methods. * Introduce CascadeMode.Stop and deprecate CascadeMode.StopOnFirstFailure to resolve confusion/abiguity about setting the cascade mode at validator-level (#1437) * RaiseValidationException can be overridden to customize the exception throwing process * Add new Validate extension methods that allow options to be configured using a strategy Changes in 9.0.0: * Removed support for netstandard1.1 and netstandard1.6 * Removed support for end-of-life .NET Core versions (2.2 and 3.0). LTS versions are supported (2.1 and 3.1) * Default email validation mode now uses the same logic as ASP.NET Core. Previous regex behaviour is opt-in. * TestHelper advanced mode now has more features (see https://docs.fluentvalidation.net/en/latest/testing.html#advanced-test-extensions) * Equal/NotEqual now perform ordinal comparison when used with string properties * Severity can now be set dynamically with a callback * Removed WithLocalizedMessage (WithMessage that takes a callback is the replacement) * Removed ResourceName from ValidationFailure * Removed ResourceName and ResourceType from IStringSource. * Removed SetCollectionValidator which was deprecated in 8.0 * Additional overload of OnAnyFailure that can receive a collection of validation failures * Remove DisplayAttribute integration and reference to DataAnnotations. * ComparisonProperty placeholder is now formatted like PropertyName * Translations of default error messages into other languages are now lazily-loaded * Added Slovenian translations of default error messages. * Added Icelandic translations of default error messages. * Added WithMessageArgument to the test helpers. * Add additional overload of SetValidator that takes a Func that receives the current property value. * ASP.NET Core: FluentValidationModelValidatorProvider and FluentValidationModelValidator are now public. * Work around a bug in ASP.NET Core's integration testing components that can cause ConfigureServices to run multiple times. * SourceLink integration. * {CollectionIndex} placeholder can now be accessed in child validators. * Additional ValidationException constructor that allows using both the default message and a custom one together. * ScalePrecisionValidator algorithm now matches SQL Server. * Additional overload of the When methods that contain the validation context. * Automatically scanned types can be excluded when calling RegisterValidatorsFromAssemblyContaining in ASP.NET Core projects. * New AutomaticValidationEnabled property for use in ASP.NET Core projects (defaults to true). Full release notes can be found at https://github.com/FluentValidation/FluentValidation/blob/master/Changelog.txt

.NET Framework 4.6.1

  • No dependencies.

.NET Standard 2.0

  • No dependencies.

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12.1.0 6 11/07/2025
12.0.0 28 05/05/2025
12.0.0-preview1 38 01/06/2025
11.12.0 7 11/08/2025
11.11.0 40 11/20/2024
11.10.0 46 09/16/2024
11.9.2 49 06/15/2024
11.9.1 50 05/10/2024
11.9.0 54 01/08/2024
11.8.1 56 11/25/2023
11.8.0 52 10/19/2023
11.7.1 59 08/28/2023
11.7.0 54 08/22/2023
11.6.0 54 08/11/2023
11.5.2 56 07/18/2023
11.5.1 46 08/08/2023
11.5.0 53 08/20/2023
11.4.0 52 05/17/2023
11.3.0 54 08/04/2023
11.2.2 56 10/25/2022
11.2.1 54 10/08/2022
11.2.0 57 12/19/2022
11.1.1 46 07/06/2023
11.1.0 56 07/11/2022
11.0.3 60 04/22/2023
11.0.2 60 03/29/2023
11.0.1 61 01/15/2023
11.0.0 50 12/28/2022
10.4.0 61 12/16/2022
10.3.6 54 04/03/2023
10.3.5 48 08/06/2023
10.3.4 58 03/31/2023
10.3.3 54 06/16/2023
10.3.1 60 05/13/2023
10.3.0 57 11/18/2022
10.2.3 57 05/06/2023
10.2.2 58 05/05/2023
10.2.1 53 12/17/2022
10.2.0 54 12/12/2022
10.1.0 54 11/24/2022
10.0.4 57 11/08/2022
9.5.4 58 04/21/2023
9.5.3 61 05/16/2023
9.5.2 64 06/15/2023
9.5.1 57 12/27/2022
9.5.0 61 11/08/2022
9.4.0 64 11/08/2022
9.3.0 66 12/14/2022
9.3.0-preview3 54 03/29/2023
9.3.0-preview2 54 01/27/2023
9.3.0-preview1 51 12/16/2022
9.2.2 53 07/29/2023
9.2.1 71 12/22/2022
9.2.0 50 08/12/2023
9.1.3 54 04/01/2023
9.1.2 55 11/26/2022
9.1.1 56 07/01/2023
9.1.0 60 05/02/2023
9.0.1 52 10/28/2022
9.0.0-preview5 51 03/18/2023
9.0.0-preview4 49 08/20/2023
9.0.0-preview3 52 02/26/2023
9.0.0-preview2 54 03/26/2023
9.0.0-preview1 49 11/12/2022
8.6.3 56 12/20/2022
8.6.2 60 05/07/2023
8.6.1 50 11/10/2022
8.6.0 59 11/12/2022
8.5.1 54 12/29/2022
8.5.0 56 12/24/2022
8.5.0-preview5 54 03/29/2023
8.5.0-preview4 52 02/04/2023
8.5.0-preview3 51 02/15/2023
8.5.0-preview2 59 04/15/2023
8.5.0-preview1 54 02/20/2023
8.4.0 57 11/18/2022
8.3.0 61 12/14/2022
8.2.3 57 11/27/2022
8.2.2 51 05/14/2023
8.2.1 63 08/27/2022
8.2.0 59 11/10/2022
8.1.3 57 11/23/2022
8.1.2 60 11/21/2022
8.1.1 60 04/18/2023
8.1.0 52 11/21/2022
8.1.0-preview2 51 01/14/2023
8.1.0-preview1 52 04/08/2023
8.0.101 49 05/17/2023
8.0.100 51 11/22/2022
8.0.0 51 11/15/2022
8.0.0-rc1 48 09/28/2023
8.0.0-preview4 47 08/10/2023
8.0.0-preview3 51 04/14/2023
8.0.0-preview2 53 11/14/2022
7.6.105 52 11/03/2022
7.6.104 56 05/02/2023
7.6.103 52 07/22/2023
7.6.102 57 11/09/2022
7.6.101 54 07/07/2023
7.6.100 58 04/09/2023
7.6.0 65 02/13/2023
7.6.0-preview1 64 04/02/2023
7.5.2 54 05/15/2023
7.5.1 56 11/23/2022
7.5.0 63 11/12/2022
7.4.0 61 11/18/2022
7.3.4 58 11/11/2022
7.3.3 57 11/07/2022
7.3.2 55 08/07/2023
7.3.1 56 08/04/2023
7.3.0 56 05/17/2023
7.3.0-beta3 44 08/05/2023
7.3.0-beta2 48 08/16/2023
7.3.0-beta1 52 08/20/2023
7.2.1 56 01/16/2023
7.2.0 58 11/21/2022
7.2.0-beta3 49 08/09/2023
7.2.0-beta2 54 08/06/2023
7.2.0-beta1 62 11/25/2022
7.1.1 56 10/25/2022
7.1.0 54 05/17/2023
7.1.0-beta1 51 09/23/2023
7.0.3 60 11/21/2022
7.0.2 53 11/09/2022
7.0.1 61 11/27/2022
7.0.0 52 11/13/2022
7.0.0-beta3 50 07/05/2023
7.0.0-beta2 46 07/30/2023
7.0.0-beta1 55 08/15/2023
6.4.1 46 07/15/2023
6.4.1-beta1 56 08/15/2023
6.4.0 53 04/09/2023
6.4.0-rc4 55 08/16/2023
6.4.0-rc3 55 08/12/2023
6.4.0-rc2 51 07/08/2023
6.4.0-rc1 47 08/02/2023
6.4.0-beta9 50 05/19/2023
6.4.0-beta8 53 08/16/2023
6.4.0-beta7 51 08/09/2023
6.4.0-beta6 60 08/06/2023
6.4.0-beta5 56 08/10/2023
6.4.0-beta4 50 08/15/2023
6.4.0-beta3 49 08/10/2023
6.4.0-beta2 51 08/07/2023
6.4.0-beta10 57 06/21/2023
6.4.0-beta1 57 08/07/2023
6.3.4-alpha 53 02/20/2023
6.3.3-alpha 52 04/30/2023
6.2.1 53 12/22/2022
6.2.1-beta1 50 08/06/2023
6.2.0 65 11/28/2022
6.2.0-beta1 45 11/17/2022
6.1.0 52 08/05/2023
6.0.2 50 12/31/2022
6.0.1 59 11/28/2022
6.0.0 55 11/20/2022
5.6.2 56 04/29/2023
5.6.1 53 12/20/2022
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5.4.0 59 02/10/2023
5.3.0 55 11/17/2022
5.2.0 59 12/02/2022
5.1.0 52 12/29/2022
5.0.0.1 50 12/31/2022
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4.0.0 54 11/28/2022
3.4.6 51 11/06/2022
3.4.0 52 11/12/2022
3.3.1 54 10/28/2022
3.2.0 59 03/11/2023
3.1.0 44 04/06/2023
3.0.0.1 55 12/13/2022
3.0.0 64 04/01/2023
2.0.0 51 12/21/2022
1.3.0 48 05/07/2023