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
FastEndpoints
A light-weight REST Api framework for ASP.Net 6 and newer that implements REPR (Request-Endpoint-Response) Pattern.
19
Blazored.FluentValidation
A library for using FluentValidation with Blazor
17
FastEndpoints
A light-weight REST Api framework for ASP.Net 6 and newer that implements REPR (Request-Endpoint-Response) Pattern.
17
Blazored.FluentValidation
A library for using FluentValidation with Blazor
16
Elsa.Studio.Core
Core Elsa Studio services.
16
FastEndpoints
A light-weight REST Api framework for ASP.Net 6 that implements REPR (Request-Endpoint-Response) Pattern.
16
Elsa.Studio.Core
Core Elsa Studio services.
15
FastEndpoints
A light-weight REST Api framework for ASP.Net 6 and newer that implements REPR (Request-Endpoint-Response) Pattern.
15
FastEndpoints
A light-weight REST Api framework for ASP.Net 6 that implements REPR (Request-Endpoint-Response) Pattern.
15
Elsa.Studio.Core
Core Elsa Studio services.
14

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

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12.1.1 2 1/15/2026
12.1.0 2 11/25/2025
12.0.0 9 6/28/2025
12.0.0-preview1 7 3/6/2025
11.12.0 1 1/15/2026
11.11.0 8 3/7/2025
11.10.0 11 3/7/2025
11.9.2 11 9/3/2024
11.9.1 14 3/6/2025
11.9.0 12 3/6/2025
11.8.1 10 3/6/2025
11.8.0 12 9/3/2024
11.7.1 8 9/4/2023
11.7.0 11 3/6/2025
11.6.0 8 7/4/2023
11.5.2 13 8/6/2023
11.5.1 10 3/6/2025
11.5.0 11 3/6/2025
11.4.0 11 7/4/2023
11.3.0 11 3/6/2025
11.2.2 11 3/6/2025
11.2.1 12 1/3/2024
11.2.0 11 3/6/2025
11.1.1 12 3/7/2025
11.1.0 11 3/6/2025
11.0.3 9 3/6/2025
11.0.2 9 3/6/2025
11.0.1 9 3/6/2025
11.0.0 12 3/6/2025
10.4.0 13 3/6/2025
10.3.6 10 3/6/2025
10.3.5 11 3/6/2025
10.3.4 14 3/6/2025
10.3.3 10 3/6/2025
10.3.1 10 3/6/2025
10.3.0 11 3/6/2025
10.2.3 11 6/9/2024
10.2.2 8 3/6/2025
10.2.1 12 3/6/2025
10.2.0 8 3/6/2025
10.1.0 10 3/6/2025
10.0.4 10 3/6/2025
9.5.4 13 3/6/2025
9.5.3 10 3/6/2025
9.5.2 14 3/6/2025
9.5.1 12 3/6/2025
9.5.0 10 3/6/2025
9.4.0 11 3/6/2025
9.3.0 11 3/6/2025
9.3.0-preview3 8 3/6/2025
9.3.0-preview2 11 3/6/2025
9.3.0-preview1 10 3/6/2025
9.2.2 12 3/6/2025
9.2.1 11 3/6/2025
9.2.0 9 3/6/2025
9.1.3 13 3/6/2025
9.1.2 8 3/6/2025
9.1.1 10 3/6/2025
9.1.0 11 3/6/2025
9.0.1 13 3/6/2025
9.0.0-preview5 7 3/6/2025
9.0.0-preview4 13 3/6/2025
9.0.0-preview3 8 3/6/2025
9.0.0-preview2 9 3/6/2025
9.0.0-preview1 7 3/6/2025
8.6.3 8 3/6/2025
8.6.2 12 3/6/2025
8.6.1 12 3/6/2025
8.6.0 12 3/6/2025
8.5.1 11 3/6/2025
8.5.0 11 3/6/2025
8.5.0-preview5 10 3/6/2025
8.5.0-preview4 7 3/6/2025
8.5.0-preview3 6 3/6/2025
8.5.0-preview2 8 3/6/2025
8.5.0-preview1 11 3/6/2025
8.4.0 14 3/6/2025
8.3.0 15 3/6/2025
8.2.3 12 3/6/2025
8.2.2 11 3/6/2025
8.2.1 15 3/6/2025
8.2.0 12 3/6/2025
8.1.3 11 3/6/2025
8.1.2 8 3/6/2025
8.1.1 11 3/6/2025
8.1.0 11 3/6/2025
8.1.0-preview2 11 3/6/2025
8.1.0-preview1 6 3/6/2025
8.0.101 11 3/7/2025
8.0.100 9 3/7/2025
8.0.0 11 3/6/2025
8.0.0-rc1 9 3/6/2025
8.0.0-preview4 12 3/6/2025
8.0.0-preview3 9 3/6/2025
8.0.0-preview2 9 3/6/2025
7.6.105 11 3/7/2025
7.6.104 11 3/7/2025
7.6.103 15 3/7/2025
7.6.102 10 3/7/2025
7.6.101 10 3/7/2025
7.6.100 8 3/7/2025
7.6.0 12 3/6/2025
7.6.0-preview1 8 3/6/2025
7.5.2 10 3/6/2025
7.5.1 12 3/6/2025
7.5.0 12 3/6/2025
7.4.0 10 3/6/2025
7.3.4 11 3/6/2025
7.3.3 9 3/6/2025
7.3.2 11 3/6/2025
7.3.1 10 3/6/2025
7.3.0 11 3/6/2025
7.3.0-beta3 6 3/6/2025
7.3.0-beta2 11 3/6/2025
7.3.0-beta1 9 3/6/2025
7.2.1 11 3/6/2025
7.2.0 15 3/6/2025
7.2.0-beta3 8 3/6/2025
7.2.0-beta2 11 3/6/2025
7.2.0-beta1 9 3/6/2025
7.1.1 13 3/6/2025
7.1.0 14 3/6/2025
7.1.0-beta1 12 3/6/2025
7.0.3 12 3/6/2025
7.0.2 14 3/6/2025
7.0.1 12 3/6/2025
7.0.0 11 3/6/2025
7.0.0-beta3 8 3/6/2025
7.0.0-beta2 6 3/6/2025
7.0.0-beta1 7 3/6/2025
6.4.1 11 3/6/2025
6.4.1-beta1 9 3/6/2025
6.4.0 11 3/6/2025
6.4.0-rc4 11 3/6/2025
6.4.0-rc3 10 3/7/2025
6.4.0-rc2 7 3/7/2025
6.4.0-rc1 10 3/7/2025
6.4.0-beta9 8 3/6/2025
6.4.0-beta8 6 3/6/2025
6.4.0-beta7 6 3/6/2025
6.4.0-beta6 10 3/6/2025
6.4.0-beta5 7 3/6/2025
6.4.0-beta4 10 3/6/2025
6.4.0-beta3 11 3/6/2025
6.4.0-beta2 6 3/6/2025
6.4.0-beta10 13 3/6/2025
6.4.0-beta1 9 3/6/2025
6.3.4-alpha 11 3/6/2025
6.3.3-alpha 12 3/6/2025
6.2.1 10 3/6/2025
6.2.1-beta1 12 3/6/2025
6.2.0 10 3/6/2025
6.2.0-beta1 8 3/6/2025
6.1.0 12 3/6/2025
6.0.2 11 3/6/2025
6.0.1 15 3/6/2025
6.0.0 11 3/6/2025
5.6.2 8 3/6/2025
5.6.1 14 3/6/2025
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5.3.0 13 3/6/2025
5.2.0 10 3/6/2025
5.1.0 12 3/6/2025
5.0.0.1 9 3/6/2025
4.0.0.1 11 3/6/2025
4.0.0 8 3/6/2025
3.4.6 12 3/6/2025
3.4.0 13 3/6/2025
3.3.1 9 3/6/2025
3.2.0 12 3/6/2025
3.1.0 11 3/6/2025
3.0.0.1 13 3/6/2025
3.0.0 10 3/6/2025
2.0.0 13 3/6/2025
1.3.0 10 3/6/2025