當我嘗試從我的存儲庫加載所有CssFile時,出現多重性錯誤。調試當前的現有對象時,一切似乎都很好。我嘗試過Include()頁面,但發生了相同的錯誤。EF代碼優先:InvalidOperationException違反多重性約束
public CssFile FindByPage(Page page)
{
return cssFiles.Where(f => f.PageId == page.Id).Single();
}
的多重約束被違反。關係 Page_CssFile_Target Paycento_Models.DAL.Page_CssFile的作用,多重 1或0 .. 1.
public class Page
{
[Key()]
public int Id { get; set; }
[ForeignKey("CssFile")]
public int CssFileId { get; set; }
public virtual CssFile CssFile { get; set; }
}
public class CssFile
{
public string FileName { get; set; }
[Key()]
[ForeignKey("Page")]
public int PageId { get; set; }
public virtual Page Page { get; set; }
}