指定父级/子级关系的级联删除? [英] Specify a cascading delete for parent / child relationships?

问题描述

型号:

public class MenuItem
{
    public Guid Id {get;set;}
    public virtual Guid? ParentMenuItemId {get;set;}
    public virtual MenuItem ParentMenuItem {get;set;}
    public virtual ICollection<MenuItem> ChildMenuItems {get;set;}
}

当前映射:

HasOptional(m => m.ParentMenuItem).WithMany(p => p.ChildMenuItems).HasForeignKey(m => m.ParentMenuItemId);

我尝试添加WillCascadeOnDelete(true)，但是出现错误.如何更新我的映射以允许级联删除?因此，如果我删除了父母，所有的孩子都将被删除.我必须手动执行此操作吗?

I tried adding the WillCascadeOnDelete(true), but I got an error. How should I update my mapping to allow for cascading deletes? So, If I delete a Parent, all the children will be deleted. Do I have to do this manually?

推荐答案

在模型中，只需查看关联的属性即可.您可以将OnDelete设置为Cascade. XML应该如下所示:

In your model, just look at the association's properties. There is an OnDelete that you can set to Cascade. The XML should look like this:

<OnDelete Action="Cascade" />

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