Proper way to get a collection on the view

Hi all,

I have a class "Category" with a List with the primary key mapped.

How do I list the category and subcategory?

The code bellow is not listing the subcategorys

@model IList
    

        

            @foreach (var Item in Model)
            {
            

                @Item.CategoriaNome
                @if (!(Item.SubCategorias == null))
                {
                    

                        @foreach (var subcategoria in Item.SubCategorias)
                        {
                            
@subcategoria.Nome
                        }
                    
                }
            
            }
        
    

The classes

Category

    public class Category
    {
        [Key]
        public int Id { get; set; }
        [Required(ErrorMessage = "Nome obrigatório")]
        [Display(Name = "Nome da categoria")]
        public string CategoriaNome { get; set; }
        [Display(Name = "Idioma:")]
        public string Idioma { get; set; }
        public List SubCategorias { get; set; }
        public List Things{ get; set; }
    }

SubCategory

    public class SubCategory
    {
        [Key]
        public int Id { get; set; }
        public string Nome { get; set; }
        public string Idioma { get; set; }
        public int CategoriaId { get; set; }
        [ForeignKey("CategoriaId")]
        public Category Categoria { get; set; }
        public List Things{ get; set; }
    }

Thanks in advance