DSoftStudio.Mediator.FluentValidation 1.0.8

Prefix Reserved
.NET 8.0 This package targets .NET 8.0. The package is compatible with this framework or higher. 
dotnet add package DSoftStudio.Mediator.FluentValidation --version 1.0.8
                    


                    

                
NuGet\Install-Package DSoftStudio.Mediator.FluentValidation -Version 1.0.8
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="DSoftStudio.Mediator.FluentValidation" Version="1.0.8" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="DSoftStudio.Mediator.FluentValidation" Version="1.0.8" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="DSoftStudio.Mediator.FluentValidation" />
                    


                            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 DSoftStudio.Mediator.FluentValidation --version 1.0.8
                    


                    

                
#r "nuget: DSoftStudio.Mediator.FluentValidation, 1.0.8"
#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 DSoftStudio.Mediator.FluentValidation@1.0.8
#: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=DSoftStudio.Mediator.FluentValidation&version=1.0.8
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=DSoftStudio.Mediator.FluentValidation&version=1.0.8
                    


                            Install as a Cake Tool

DSoftStudio Mediator

DSoftStudio.Mediator.FluentValidation

NuGet License

FluentValidation integration for DSoftStudio.Mediator. Provides automatic request validation via a pipeline behavior that resolves IValidator<T> instances from DI and short-circuits on failure.

Features

  • Automatic validation — All requests with registered validators are validated before reaching the handler
  • Multiple validators — Supports multiple validators per request type, all errors are aggregated
  • Structured errors — MediatorValidationException with typed error details for easy API response mapping
  • Zero configuration — Register once, validates everywhere

Installation

dotnet add package DSoftStudio.Mediator.FluentValidation

Quick Start

Define a validator:

public class CreateUserValidator : AbstractValidator<CreateUser>
{
    public CreateUserValidator()
    {
        RuleFor(x => x.Name).NotEmpty();
        RuleFor(x => x.Email).EmailAddress();
    }
}

Register the validation pipeline behavior and your validators at startup:

services
    .AddMediator()
    .RegisterMediatorHandlers()
    .AddMediatorFluentValidation()
    .PrecompilePipelines();

// Register validators — choose one of the approaches below

Registering Validators

Option 1 — Manual registration (AOT-compatible)

services.AddScoped<IValidator<CreateUser>, CreateUserValidator>();

Option 2 — Assembly scanning (requires FluentValidation.DependencyInjectionExtensions)

dotnet add package FluentValidation.DependencyInjectionExtensions

services.AddValidatorsFromAssembly(typeof(Program).Assembly);

Note: FluentValidation.DependencyInjectionExtensions uses reflection-based assembly scanning, which is not compatible with NativeAOT / trimming.

Validation runs automatically — if validation fails, a MediatorValidationException is thrown before the handler executes.

Error Handling

try
{
    await mediator.Send(new CreateUser("", "invalid"));
}
catch (MediatorValidationException ex)
{
    // ex.Errors contains structured validation errors
    foreach (var error in ex.Errors)
        Console.WriteLine($"{error.PropertyName}: {error.ErrorMessage}");
}

Documentation

📖 Full documentation

License

MIT License

Product Compatible and additional computed target framework versions.
.NET net8.0 is compatible.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed.  net9.0 was computed.  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
1.0.8 110 4/13/2026
1.0.6 105 3/23/2026