无法确定依赖操作的有效排序 [英] Unable to determine a valid ordering for dependent operations

问题描述

这是我的模型

public string Content { get; set; }

public Faq Reply { set; get; }

public int? ReplyId { get; set; }

public ICollection<Faq> Children { get; set; }

[ForeignKey("WriterId")]
public virtual UserProfile Writer { get; set; }

public virtual int? WriterId { get; set; }

public Status Status { get; set; }

[ForeignKey("DepartmentId")]
public virtual Department Department { get; set; }

public virtual int? DepartmentId { get; set; }

这是我的错误

无法确定依赖操作的有效排序。由于外键约束，模型要求或存储生成值，可能存在依赖关系。

Unable to determine a valid ordering for dependent operations. Dependencies may exist due to foreign key constraints, model requirements, or store-generated values.

推荐答案

看起来你有一个循环依赖。你收到保存数据的错误？

Looks like you have a circular dependency.. Did you get the error on save data?

答案在这里：在EF中处理循环引用的清洁方式

此处：实体框架4：继承和关联

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