FluentValidation

[](https://nuget.org/packages/FluentValidation) [](https://nuget.org/packages/FluentValidation) [Full Documentation](https://fluentvalidation.net) A validation library for .NET that uses a fluent interface and lambda expressions for building strongly-typed validation rules. --- ### Supporting the project If you use FluentValidation in a commercial project, please sponsor the project financially. FluentValidation is developed and supported by [@JeremySkinner](https://github.com/JeremySkinner) for free in his spare time and financial sponsorship helps keep the project going. You can sponsor the project via either [GitHub sponsors](https://github.com/sponsors/JeremySkinner) or [OpenCollective](https://opencollective.com/FluentValidation). --- ### Get Started FluentValidation can be installed using the Nuget package manager or the `dotnet` CLI. ``` dotnet add package FluentValidation ``` [Review our documentation](https://docs.fluentvalidation.net) for instructions on how to use the package. --- ### Example ``` … ``` ### License, Copyright etc FluentValidation has adopted the [Code of Conduct](https://github.com/FluentValidation/FluentValidation/blob/main/.github/CODE_OF_CONDUCT.md) defined by the Contributor Covenant to clarify expected behavior in our community. For more information see the [.NET Foundation Code of Conduct](https://dotnetfoundation.org/code-of-conduct). FluentValidation is copyright © 2008-2022 .NET Foundation, [Jeremy Skinner](https://jeremyskinner.co.uk) and other contributors and is licensed under the [Apache2 license](https://github.com/JeremySkinner/FluentValidation/blob/master/License.txt). ### Sponsors This project is sponsored by the following organisations whose support help keep this project going: - [Microsoft](https://microsoft.com) for their financial contribution - [JetBrains](https://www.jetbrains.com/?from=FluentValidation) for providing licenses to their developer tools This project is part of the [.NET Foundation](https://dotnetfoundation.org).