1
我有一个导航属性未加载的问题。我对所有其他实体都有同样的设置,但是这是使用一个不是自然FK(数字)并且不会级联的属性,它将由触发器处理。实体框架代码首先不拉动导航属性
Expression<Func<DivisionBracketGameParticipant, object>>[] includes2 = {
q => q.DivisionWinnerBracketGame,
q => q.DivisionLoserBracketGame
};
var test = _divisionBracketGameParticipantsRepository.GetMany(includes2,
q =>
q.DivisionBracketGame.DivisionBracket.Division.
EventId == eventId);
数据库模式
DivisionBracketGame
Id
Number
DivisionBracketGameParticipant
Id
DivisionBracketGameId -> Id
DivisionBracketGameWinnerNumber -> Number
DivisionBracketGameLoserNumber -> Number
实体
[Table("DivisionBracketGame", Schema = "GrassrootsHoops")]
public class DivisionBracketGame : BaseEntity
{
public int Id{ get; set; }
public int Number { get; set; }
[InverseProperty("DivisionBracketGame")]
public virtual ICollection<DivisionBracketGameParticipant> DivisionBracketGameParticipants { get; set; }
[InverseProperty("DivisionWinnerBracketGame")]
public virtual ICollection<DivisionBracketGameParticipant> DivisionWinnerBracketGameParticipants { get; set; }
[InverseProperty("DivisionLoserBracketGame")]
public virtual ICollection<DivisionBracketGameParticipant> DivisionLoserBracketGameParticipants { get; set; }
}
[Table("DivisionBracketGameParticipant", Schema = "GrassrootsHoops")]
public class DivisionBracketGameParticipant : BaseEntity
{
public int Id{ get; set; }
public virtual int DivisionBracketGameId { get; set; }
public virtual int? DivisionWinnerBracketGameNumber { get; set; }
public virtual int? DivisionLoserBracketGameNumber { get; set; }
[ForeignKey("DivisionBracketGameId")]
public virtual DivisionBracketGame DivisionBracketGame { get; set; }
[ForeignKey("DivisionWinnerBracketGameNumber")]
public virtual DivisionBracketGame DivisionWinnerBracketGame { get; set; }
[ForeignKey("DivisionLoserBracketGameNumber")]
public virtual DivisionBracketGame DivisionLoserBracketGame { get; set; }
}
即使我明确告诉它外键是什么? – 2012-07-10 15:37:30
你可以告诉EF哪些属性是导航属性的外键,但是你不能告诉EF该关系没有根据主表中的主键定义。 – 2012-07-10 15:42:17
拉迪斯拉夫,我可以从你的语句推断导航属性将生成**只** **外键指向主键,而不是唯一键?我问这[这里](http://stackoverflow.com/questions/32327153/are-navigation-properties-generated-only-for-fks-on-pks-as-opposed-to-unique-ke)。 – Veverke 2015-09-01 08:48:41