Validator.AspNetCore 1.0.0

.NET 9.0 This package targets .NET 9.0. The package is compatible with this framework or higher.
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See the version list below for details.
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dotnet add package Validator.AspNetCore --version 1.0.0
                    


                    

                
NuGet\Install-Package Validator.AspNetCore -Version 1.0.0
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="Validator.AspNetCore" Version="1.0.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="Validator.AspNetCore" Version="1.0.0" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="Validator.AspNetCore" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add Validator.AspNetCore --version 1.0.0
                    


                    

                
#r "nuget: Validator.AspNetCore, 1.0.0"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package Validator.AspNetCore@1.0.0
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=Validator.AspNetCore&version=1.0.0
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=Validator.AspNetCore&version=1.0.0
                    


                            Install as a Cake Tool

Validator.AspNetCore

Simple, fluent interface validation implementation for ASP.NET Core.

Installing Validator.AspNetCore

You should install Mediator.CodeGen with NuGet or the .NET Core command line interface:

Install-Package Validator.AspNetCore

or

dotnet add package Validator.AspNetCore

Getting Started

Validator.AspNetCore supports Microsoft.Extensions.DependencyInjection.Abstractions directly:

services.AddValidatorsFromAssemblies(assembly1, assembly2);

(this registers concrete IValidator<> implementations as singletons);

OR

services.AddValidatorsFromAssemblies(ServiceLifetime.Scoped, assembly1, assembly2);

(this overload registers concrete IValidator<> implementations with the desired ServiceLifetime);

Usage (see /samples directory for more)

using Validator.AspNetCore;

public sealed class PersonValidator : AbstractValidator<Person>
{
   public PersonValidator()
   {
      this
         .RuleFor(x => x.Id)
         .NotEmpty()
         .GreaterThanOrEqualTo(0);

      this
         .RuleFor(x => x.FirstName)
         .NotEmpty()
         .MaximumLength(100);
   }
}

Custom Rules

using Validator.AspNetCore;
using Validator.AspNetCore.Rules;

public static class RuleBuilderExtensions
{
   private const int MaximumIdValue = int.MaxValue - 69;

   // add custom rules by extending the IRuleBuilder<,> interface
   public static IRuleBuilder<T, int> RejectHugeIds<T>(this IRuleBuilder<T, int> ruleBuilder)
   {
      ruleBuilder.AddRule(validationContext =>
      {
         if (validationContext.PropertyValue > MaximumIdValue)
         {
            return new ValidationFailure(
               PropertyName: validationContext.PropertyName,
               ErrorCode: "RejectHugeIdsRule",
               ErrorMessage: $"{validationContext.PropertyName} cannot be greater than {MaximumIdValue}.");
         }

         return true;
      });

      return ruleBuilder;
   }
}
Product Compatible and additional computed target framework versions.
.NET net9.0 is compatible.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed.  net10.0 was computed.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
2.0.1 206 8/6/2025