共用方式為

IConventionForeignKeyBuilder.OnDelete 方法

  • 參考

定義

命名空間:
Microsoft.EntityFrameworkCore.Metadata.Builders
組件:
Microsoft.EntityFrameworkCore.dll
套件:
Microsoft.EntityFrameworkCore v5.0.0
套件:
Microsoft.EntityFrameworkCore v6.0.0
套件:
Microsoft.EntityFrameworkCore v7.0.0
套件:
Microsoft.EntityFrameworkCore v8.0.0

在刪除主體或中斷關聯性時，設定套用至關聯性中相依實體的作業。

public Microsoft.EntityFrameworkCore.Metadata.Builders.IConventionForeignKeyBuilder OnDelete (Microsoft.EntityFrameworkCore.DeleteBehavior? deleteBehavior, bool fromDataAnnotation = false);
public Microsoft.EntityFrameworkCore.Metadata.Builders.IConventionForeignKeyBuilder? OnDelete (Microsoft.EntityFrameworkCore.DeleteBehavior? deleteBehavior, bool fromDataAnnotation = false);
abstract member OnDelete : Nullable<Microsoft.EntityFrameworkCore.DeleteBehavior> * bool -> Microsoft.EntityFrameworkCore.Metadata.Builders.IConventionForeignKeyBuilder
Public Function OnDelete (deleteBehavior As Nullable(Of DeleteBehavior), Optional fromDataAnnotation As Boolean = false) As IConventionForeignKeyBuilder

參數

deleteBehavior
Nullable<DeleteBehavior>

要執行的動作。 null 將 重設為預設值。

fromDataAnnotation
Boolean

指出是否已使用資料批註指定組態。

傳回

IConventionForeignKeyBuilder

如果已設定刪除作業，則為相同的產生器實例， null 否則為 。

適用於