hass-workstation-service/UserInterface/ViewModels/ViewModelBase.cs

using ReactiveUI;
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Text;

namespace UserInterface.ViewModels
{
    public class ViewModelBase : ReactiveObject
    {
        public bool IsValid<T>(T obj, out ICollection<ValidationResult> results)
        {
            results = new List<ValidationResult>();

            return Validator.TryValidateObject(obj, new ValidationContext(obj), results, true);
        }
    }
}