Installing Fluent Validation In ASP.NET Core Applications

In this blog, you will learn how to install Fluent Validation in ASP.NET Core Applications

Introduction 

 

This blog was written in order to work on an ASP.NET Core 3.1 API Project that does nothing other than just validation with Fluent Validation.

 

I will be using Postman to test and receive the validation messages and Visual Studio 2019 Community as my IDE (The best for C# development)

 

Prerequisites

 

In order to build and test out our API, we’ll need the following installed:

• Visual Studio 2019
• .NET Core 3.1 SDK
• Postman

Installation

 

Before creating any validators, you will need to add a reference to FluentValidation.dll in your project. It is available as either a netstandard2.0 library or as a net461 library for older projects.

 

The simplest way to do this is to use either the NuGet package manager or the dotnet CLI.

• Using the NuGet package manager console within Visual Studio run the following command:
  
  Install-Package FluentValidation

• Or using the .NET Core CLI from a terminal window:
  
  dotnet add package FluentValidation

For integration with ASP.NET Core:

• Install the FluentValidation.AspNetCore package from Visual Studio:
  Install-Package FluentValidation.AspNetCore

• Or from the command line:
  dotnet add package FluentValidation.AspNetCore