FluentNHibernate映射

Question

我有相同的類：

public class Card : EntityBase 
{ 
    private IList<Accident> accidents; 
    public Card() 
    { 
     Accidents = new List<Accident>(); 
    } 

    public virtual IList<Accident> Accidents 
    { 
     get { return accidents; } 
     set { value = accidents; } 
    } 

    public virtual void AddAccident(Accident accident) 
    { 
     Accidents.Add(accident); 
     accident.Card = this; 
    } 

} 

public class Accident : EntityBase 
{ 
    public Accident(){ 
    } 
    public virtual Card Card { get; set; }  

} 

及其映射

public class AccidentMap : ClassMap<Accident> 
{ 
    public AccidentMap() 
    { 
     Table("ACCIDENT"); 
     Id(x => x.Id).Not.Nullable().Column("ID_ACCIDENT"); 
     References(x => x.Card).Column("ID_CARD").Cascade.SaveUpdate(); 
    } 
} 

當我試圖挽救意外我的NullReferenceException在Accidents.Add（事故）。爲什麼？ 謝謝。

Answer 1

set { value = accidents; } 應該 set { accidents = value; }