Top 20 NuGet validator Packages

System.ComponentModel.Annotations.Validation is a extension of System.ComponentModel validation engine. Supports validation of properties and invariants for object graphs.
Country Validator is a library that can be used to validate VAT/TVA codes, social security numbers and TINs (Tax Identification Numbers). All countries from European Union are supported and United States.
TinyValidator abstractions
MixCore.Validation
Multiple implementations on email address validation.
Helper functions to aid in argument validation for C# functions. Example Usage: Throw.IfNull(argument, nameof(argument)); Throw.IfNullOrEmpty(argument, nameof(argument));
File type checker that checks the file's magic numbers/identifying bytes. Useful for verifying uploaded files in web applications. NuGet package of code originally written by https://github.com/mjolka and extended to allow for dependency injecting the known file types.
WebDucer library for value validation on UI intefaces
Bibliothek für Mitgliedsnummer-Prüfungen für Unfallversicherungsträger basierend auf Internet-Quellen
Fluent validation framework for .net
Validator.NET asp net core extension
The Validation Application Block provides useful features that allow developers to implement structured and easy-to-maintain validation scenarios in their applications. This is a non-configurable .NET Standard-based Validation Application Block.
Package Description
Don't let users to inject you an invalid file! FileTypeChecker is a easy to use library that allows you to read file and recognize its type. This will help you to validate all files that is provided by external sources.
Web extensions for Xander.PasswordValidator. Available under the MIT License.
prmToolkit É um projeto responsável por dar apoio a outros projetos. # ArgumentsValidator Classe responsável por gerenciar validações de argumentos. VANTAGENS >Podemos realizar validações indivíduais ou em grupos >É possível levantar uma exceção ou captura-las
Node Validator (node-validator) binding library for Bridge.NET projects.
Custom control for your Xamarin.Forms project to validate entries. With this plugin you can validate an email entry, a entry with length, entry when is password, or compare two Entries. Available for Android, iOS and UWP Built against: 2.3.4.224
This component allows the Validation Application Block to integrate with WPF.