MutableEntityTypeExtensions.AddForeignKey 方法

  • 參考

定義

命名空間:
Microsoft.EntityFrameworkCore
組件:
Microsoft.EntityFrameworkCore.dll
套件:
Microsoft.EntityFrameworkCore v1.0.6
套件:
Microsoft.EntityFrameworkCore v1.1.6
套件:
Microsoft.EntityFrameworkCore v2.0.3
套件:
Microsoft.EntityFrameworkCore v2.1.11
套件:
Microsoft.EntityFrameworkCore v2.2.6
套件:
Microsoft.EntityFrameworkCore v3.0.0
套件:
Microsoft.EntityFrameworkCore v3.1.0
套件:
Microsoft.EntityFrameworkCore v5.0.0

將新的關聯性加入至這個實體類型。

public static Microsoft.EntityFrameworkCore.Metadata.IMutableForeignKey AddForeignKey (this Microsoft.EntityFrameworkCore.Metadata.IMutableEntityType entityType, Microsoft.EntityFrameworkCore.Metadata.IMutableProperty property, Microsoft.EntityFrameworkCore.Metadata.IMutableKey principalKey, Microsoft.EntityFrameworkCore.Metadata.IMutableEntityType principalEntityType);
static member AddForeignKey : Microsoft.EntityFrameworkCore.Metadata.IMutableEntityType * Microsoft.EntityFrameworkCore.Metadata.IMutableProperty * Microsoft.EntityFrameworkCore.Metadata.IMutableKey * Microsoft.EntityFrameworkCore.Metadata.IMutableEntityType -> Microsoft.EntityFrameworkCore.Metadata.IMutableForeignKey
<Extension()>
Public Function AddForeignKey (entityType As IMutableEntityType, property As IMutableProperty, principalKey As IMutableKey, principalEntityType As IMutableEntityType) As IMutableForeignKey

參數

entityType
IMutableEntityType

實體類型。

property
IMutableProperty

定義外鍵的屬性。

principalKey
IMutableKey

參考的主要或替代索引鍵。

principalEntityType
IMutableEntityType

關聯性針對的實體型別。 這可能與當關聯性以繼承階層中的衍生型別為目標時所定義的類型 principalKey 不同 (，因為索引鍵是在階層的基底類型上定義) 。

傳回

IMutableForeignKey

新建立的外鍵。

適用於