Code First 上下文条件

Code First Context Conditions

 public class Article
{
    public List<Category> _ArticleCategory;

    public Article()
    {
        _ArticleCategory = new List<Category>();
    }

    [Key]
    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
    public int ArticleID { get; set; }
    public string Title { get; set; }
    public string Description { get; set; }
    public string Content { get; set; }
    public int Viewed { get; set; }
    public DateTime LastUpdatedDate { get; set; }
    public bool IsDeleted { get; set; }

    public virtual List<Category> Categories { get; set; }
    public virtual List<Tag> Tags { get; set; }
    public virtual List<Comment> Comments { get; set; }


}

// I want to take Articles which has more than 1 Category var result = _context.Articles.Where(a => a.Categories.Count > 1).ToList();

有我的文章 Class 和我的代码 Articles.There 我从 _Context 或其他地方没问题。它给了我所有的文章。 我怎样才能为此创造条件? 谢谢大家..

谢谢大家.. 我解决了问题..

public virtual List<Category> Categories { get; set; }
public virtual List<Tag> Tags { get; set; }
public virtual List<Comment> Comments { get; set; }

//this.Configuration.LazyLoadingEnabled = false; 当我想再次使用虚拟列表 options.Thanx 时,我应该打开这个 属性.. 快乐编码:)