public class Article {
public int ArticleID { get; set; }
public String Content { get; set; }
public int? LoginID { get; set; }

[ForeignKey("LoginID")]
public virtual LoginUser LoginUser { get; set; }

public int Id { get; set; }
public String Name { get; set; }
public String Surname { get; set; }
...

@Model.LoginUser.Name