How to use FluentValidation in ASP.NET Core



To preserve the integrity, consistency, and security of application data, you should ensure that your application receives the correct data in a proper format. A popular open-source library in the C# ecosystem handles this perfectly and easily—FluentValidation. FluentValidation is a validation library for .NET that provides a fluent interface to build strongly typed validation rules in your applications. A fluent interface is an object-oriented API that makes it easy to chain method calls together.

In this article, I’ll introduce you to FluentValidation, explain why you should use it, and show you how to use this library in your ASP.NET applications to achieve clean, elegant, flexible, and maintainable validation logic. To use the code examples provided in this article, you should have Visual Studio 2022 installed in your system. If you don’t already have a copy, you can download Visual Studio 2022 here.

Create an ASP.NET Core Web API project in Visual Studio 2022

To create an ASP.NET Core Web API project in Visual Studio 2022, follow the steps outlined below.

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