C# 实体框架外键顺序错误
我已经设置了实体的键,如下所示C# 实体框架外键顺序错误,c#,sql-server,entity-framework,C#,Sql Server,Entity Framework,我已经设置了实体的键,如下所示 modelBuilder.Entity<SKU>().HasKey(p => new { p.DocEntry, p.Code }); modelBuilder.Entity<CUST>().HasKey(p => new { p.DocEntry, p.Code }); modelBuilder.Entity<Period>().HasKey(p => new { p.DocEntry
modelBuilder.Entity<SKU>().HasKey(p => new { p.DocEntry, p.Code });
modelBuilder.Entity<CUST>().HasKey(p => new { p.DocEntry, p.Code });
modelBuilder.Entity<Period>().HasKey(p => new { p.DocEntry, p.Code });
modelBuilder.Entity<FORECAST>().HasKey(p => new { p.DocEntry, p.Code });
modelBuilder.Entity().HasKey(p=>new{p.DocEntry,p.code});
modelBuilder.Entity().HasKey(p=>new{p.DocEntry,p.Code});
modelBuilder.Entity().HasKey(p=>new{p.DocEntry,p.Code});
modelBuilder.Entity().HasKey(p=>new{p.DocEntry,p.Code});
预测实体具有指向前3个实体的导航属性。定义如下
modelBuilder.Entity<FORECAST>()
.HasRequired<SKU>(d => d.FTTSku)
.WithMany()
.HasForeignKey(k => new { k.DocEntry, k.SkuLineNum });
modelBuilder.Entity<FORECAST>()
.HasRequired<CUST>(w => w.FTTCust)
.WithMany()
.HasForeignKey(k => new { k.DocEntry, k.CustLineNum });
modelBuilder.Entity<FORECAST>()
.HasRequired<Period>(w => w.Period)
.WithMany()
.HasForeignKey(k => new { k.DocEntry, k.PeriodID });
modelBuilder.Entity()
.HasRequired(d=>d.FTTSku)
.有很多
.HasForeignKey(k=>new{k.DocEntry,k.SkuLineNum});
modelBuilder.Entity()
.has必需(w=>w.FTTCust)
.有很多
.HasForeignKey(k=>new{k.DocEntry,k.CustLineNum});
modelBuilder.Entity()
.has必需(w=>w.Period)
.有很多
.HasForeignKey(k=>new{k.DocEntry,k.PeriodID});
之后,当我试图从表中读取数据时,EF给出了以下错误
(6,10):错误3015:映射从第6行开始的片段时出现问题,
56:来自FORECAST表的外键约束“FORECAST\u Cust”
(CustLineNum,DocEntry)到表CUST(DocEntry,Code)::不足
映射:外键必须映射到某个关联或
参与上的外键关联的EntitySet
概念方面
(31,10):错误3015:映射从行开始的片段时出现问题
31,56:FORECAST表中的外键约束“FORECAST\u Period”
(PeriodID,DocEntry)到表期间(DocEntry,Code)::不足
映射:外键必须映射到某个关联或
参与上的外键关联的EntitySet
概念方面
(41,10):错误3015:映射从行开始的片段时出现问题
41,56:来自预测表的外键约束“FORECAST\u Sku”
(FTTSkuLineNum,DocEntry)到表SKU(DocEntry,Code)::不足
映射:外键必须映射到某个关联或
参与上的外键关联的EntitySet
概念方面
当我更改外键定义的顺序时,不存在此错误。但它无法读取导航属性数据。我检查了探查器中生成的SQL,发现连接条件也不正确
喂,我换成
modelBuilder.Entity<FORECAST>()
.HasRequired<SKU>(d => d.FTTSku)
.WithMany()
.HasForeignKey(k => new { k.SkuLineNum, k.DocEntry });
modelBuilder.Entity()
.HasRequired(d=>d.FTTSku)
.有很多
.HasForeignKey(k=>new{k.SkuLineNum,k.DocEntry});
下面是生成的SQL,这也是错误的
内部连接[dbo]。[SKU]作为[Extent13]在([Extent10]。[DocEntry]=[Extent13]。[Code])和([Extent10]。[SkuLineNum]=[Extent13]。[DocEntry])作为[Join7]
原因可能是什么?不太清楚出了什么问题。我只是试着重新写一遍。关联和键与我在问题中定义的相同,但是现在它起作用了 我的实体在哪里,或者更确切地说,在哪里
[Table("@FORECAST")]
public class FORECAST : BindableBase
{
private int _code;
[DatabaseGenerated(DatabaseGeneratedOption.Identity)]
[Browsable(false)]
public int Code
{
get { return this._code; }
set { SetProperty(ref _code, value); }
}
private string _Name;
[Browsable(false)]
public string Name
{
get { return this._Name; }
set { SetProperty(ref _Name, value); }
}
private int _DocEntry;
public int DocEntry
{
get { return this._DocEntry; }
set { SetProperty(ref _DocEntry, value); }
}
private int _PeriodID;
public int PeriodID
{
get { return this._PeriodID; }
set { SetProperty(ref _PeriodID, value); }
}
private int _SkuLineNum;
public int SkuLineNum
{
get { return this._SkuLineNum; }
set { SetProperty(ref _SkuLineNum, value); }
}
private int _CustLineNum;
public int CustLineNum
{
get { return this._CustLineNum; }
set { SetProperty(ref _CustLineNum, value); }
}
private decimal _Value;
[DisplayName("Forecast value")]
public decimal Value
{
get { return this._Value; }
set { SetProperty(ref _Value, value); }
}
private CUST _FTTCust;
public virtual CUST FTTCust
{
get { return this._FTTCust; }
set { SetProperty(ref _FTTCust, value); }
}
private Period _FTTPeriod;
public virtual Period FTTPeriod
{
get { return this._FTTPeriod; }
set { SetProperty(ref _FTTPeriod, value); }
}
private SKU _FTTSku;
public virtual SKU FTTSku
{
get { return this._FTTSku; }
set { SetProperty(ref _FTTSku, value); }
}
}
[Table("@SKU")]
public partial class SKU
{
[Browsable(false)]
[DatabaseGenerated(DatabaseGeneratedOption.Identity)]
public int Code { get; set; }
[Browsable(false)]
public int DocEntry { get; set; }
[StringLength(15)]
[DisplayName("Item Code")]
public string ItemCode { get; set; }
[StringLength(100)]
[DisplayName("Item Name")]
public string Name { get; set; }
[StringLength(15)]
[DisplayName("H Level 0")]
public string Level0 { get; set; }
[StringLength(15)]
[DisplayName("H Level 1")]
public string Level1 { get; set; }
}
这肯定很奇怪。您是否可以发布至少两个实体的相关部分,例如
FORECAST
和SKU
,以重现问题?是的,这绝对奇怪。我正在尝试更新.net framework版本,当我的包中出现一些错误时,我恢复了我的解决方案,并重新编写了模型和关联。现在它似乎起作用了o