Web Page Extensions to Associate Domain Models With Web Forms

namespace WebPageExtensionSample.Model
{
    using System.ComponentModel;
    using System.Collections.Generic;
    using System.ComponentModel.DataAnnotations;

    public class Category
    {
        public int Id { get; set; }
        [DisplayName("Category name: ")]
        [Required(ErrorMessage = "Category name is required.")]
        public string Name { get; set; }
        [DisplayName("Parent category: ")]
        public int ParentId { get; set; }        
    }
}