相关疑难解决方法(0)

我们希望使用Entity Framework Code First使用一对一的可选关系.我们有两个实体.

public class PIIUser
{
    public int Id { get; set; }

    public int? LoyaltyUserDetailId { get; set; }
    public LoyaltyUserDetail LoyaltyUserDetail { get; set; }
}

public class LoyaltyUserDetail
{
    public int Id { get; set; }
    public double? AvailablePoints { get; set; }

    public int PIIUserId { get; set; }
    public PIIUser PIIUser { get; set; }
}

PIIUser可能有LoyaltyUserDetail但LoyaltyUserDetail必须有PIIUser.我们尝试了这些流畅的方法技巧.

modelBuilder.Entity<PIIUser>()
            .HasOptional(t => t.LoyaltyUserDetail)
            .WithOptionalPrincipal(t => t.PIIUser)
            .WillCascadeOnDelete(true);

这种方法没有 …