Question

大家好，我正在尝试启用级联删除，但是它给出了一条错误消息：

在表“图像”上引入外键约束“ 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。查看以前的错误。

这是我的图像班和内容班：

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; }       
}

这很流利

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

启用层叠删除的解决方案是什么？

CascadeDelete循环错误

0 个答案: