private void detach_Articles(Article entity)
		{
			this.SendPropertyChanging();
			entity.User = null;
		}
		private void attach_Articles(Article entity)
		{
			this.SendPropertyChanging();
			entity.User = this;
		}
 partial void UpdateArticle(Article instance);
 partial void DeleteArticle(Article instance);
 partial void InsertArticle(Article instance);