asp.net-mvc – MVC包含路径无效错误

调节器

public ActionResult Index(int? id)
{
    var userEmail = User.Identity.Name;
    var model = db.Staffs.Where(i => i.Email == userEmail).Include("Histories").Include("CurrentApplications").FirstOrDefault();


    return View(model);
}

行var var model = db.Staffs.Where(i => i.Email == userEmail).Include(“Histories”).包含(“CurrentApplications”).FirstOrDefault();但我不知道为什么我得到它.

错误

A specified Include path is not valid. The EntityType
‘StaffPortalDBModel.Staff’ does not declare a navigation property with
the name ‘Histories’.

员工班

public partial class Staff
{
    public int StaffID { get; set; }
    public string Name { get; set; }
    public string Email { get; set; }
    public Nullable<decimal> AllocatedLeave { get; set; }
    public Nullable<int> BalanceLeave { get; set; }

    public virtual IEnumerable<History> Histories { get; set; }
    public virtual IEnumerable<CurrentApplication> CurrentApplications { get; set; }
}

解决方法

我相信在定义Navigation属性时可能需要使用ICollection而不是IEnumerable.这可能是个问题.

我还建议(假设您的Entity Framework版本足够高,以支持它)使用强类型包含,这样如果您在Staff.cs中更改属性,您将收到编译时错误.

即：.Include(s => s.Histories)