public virtual ICollection<Product> Products { get; set; }
POCO クラスの の目的は何ですか?
public class Category
{
[ScaffoldColumn(false)]
public int CategoryID { get; set; }
[Required, StringLength(100), Display(Name = "Name")]
public string CategoryName { get; set; }
public virtual ICollection<Product> Products { get; set; }
}