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c# - CascadeDelete 循环错误

问题描述

大家好，我正在尝试启用级联删除，但它给出了一个错误，上面写着：

在表 'Images' 上引入 FOREIGN KEY 约束 'FK_dbo.Images_dbo.Content_Content_Id' 可能会导致循环或多个级联路径。指定 ON DELETE NO ACTION 或 ON UPDATE NO ACTION，或修改其他 FOREIGN KEY 约束。无法创建约束。请参阅以前的错误。

这是我的图像类和内容类：

public class Content
{
    public int Id { get; set; }
    public string Title { get; set; }
    public string PreInfo { get; set; }
    public string Text { get; set; }
    public string scopedText { get; set; }
    public virtual Institution Instutition { get; set; }
    public Boolean News { get; set; }
    public Boolean Announcement { get; set; }
    public DateTime Create { get; set; }
    public virtual Member Who { get; set; }
    public short Row { get; set; }
    public virtual ContentArea ContentArea { get; set; }
    public Boolean Approvel { get; set; }
    public Boolean Slider { get; set; }
    public string  Image { get; set; }
    public Boolean popularNews { get; set; }
    public Boolean popularByTgsp { get; set; }
    public Boolean sliderByTgsp { get; set; }
    public Boolean Canceled { get; set; }       
}

public class Images
{
    public int Id { get; set; }
    public string ResimBuyuk { get; set; }
    public string ResimKucuk { get; set; }
    public short Sira { get; set; }
    public virtual Service Service { get; set; }
    public virtual Institution Institution { get; set; }
    public virtual ProjectArea ProjectArea { get; set; }
    public virtual ContentArea ContentArea { get; set; }
    public virtual EventArea EventArea { get; set; }
    public virtual ServiceArea ServiceArea { get; set; }
    public virtual Event Event { get; set; }
    public virtual Content Content { get; set; }
    public virtual Project Project { get; set; }
    public Boolean EventAreaImage { get; set; }
    public Boolean ProjectAreaImage { get; set; }       
}

这里很流利

modelBuilder.Entity<Images>()
    .HasOptional<Content>(s => s.Content)
    .WithMany()
    .WillCascadeOnDelete(true);

启用 cascadeDelete 的解决方案是什么？

标签： c#asp.net-mvcasp.net-mvc-4entity-framework-6

解决方案

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