using System;

using System.ComponentModel.DataAnnotations;

using MiniValidation;

​

public class Program

{

    public static void Main()

    {

        var widget = new Widget { Name = "crrhhh" , Age=2 };

        var isValid = MiniValidator.TryValidate(widget, out var errors);

        Console.WriteLine(isValid);

        foreach(var er in errors){

             foreach (var error in er.Value)

            {

                Console.WriteLine($"  - {error}");

            }

        }

    }

}

​

public class Widget

{

    [Required, MinLength(3)]

    public string Name { get; set; }

    [Range(18, 49)]

    public int Age { get; set; }

​

    public override string ToString() => Name;

}