IDbTransactionInterceptor.CreatingSavepointAsync 方法

定义

在 EF 打算创建事务保存点之前调用。

public System.Threading.Tasks.ValueTask<Microsoft.EntityFrameworkCore.Diagnostics.InterceptionResult> CreatingSavepointAsync (System.Data.Common.DbTransaction transaction, Microsoft.EntityFrameworkCore.Diagnostics.TransactionEventData eventData, Microsoft.EntityFrameworkCore.Diagnostics.InterceptionResult result, System.Threading.CancellationToken cancellationToken = default);
public virtual System.Threading.Tasks.ValueTask<Microsoft.EntityFrameworkCore.Diagnostics.InterceptionResult> CreatingSavepointAsync (System.Data.Common.DbTransaction transaction, Microsoft.EntityFrameworkCore.Diagnostics.TransactionEventData eventData, Microsoft.EntityFrameworkCore.Diagnostics.InterceptionResult result, System.Threading.CancellationToken cancellationToken = default);
abstract member CreatingSavepointAsync : System.Data.Common.DbTransaction * Microsoft.EntityFrameworkCore.Diagnostics.TransactionEventData * Microsoft.EntityFrameworkCore.Diagnostics.InterceptionResult * System.Threading.CancellationToken -> System.Threading.Tasks.ValueTask<Microsoft.EntityFrameworkCore.Diagnostics.InterceptionResult>
abstract member CreatingSavepointAsync : System.Data.Common.DbTransaction * Microsoft.EntityFrameworkCore.Diagnostics.TransactionEventData * Microsoft.EntityFrameworkCore.Diagnostics.InterceptionResult * System.Threading.CancellationToken -> System.Threading.Tasks.ValueTask<Microsoft.EntityFrameworkCore.Diagnostics.InterceptionResult>
override this.CreatingSavepointAsync : System.Data.Common.DbTransaction * Microsoft.EntityFrameworkCore.Diagnostics.TransactionEventData * Microsoft.EntityFrameworkCore.Diagnostics.InterceptionResult * System.Threading.CancellationToken -> System.Threading.Tasks.ValueTask<Microsoft.EntityFrameworkCore.Diagnostics.InterceptionResult>
Public Function CreatingSavepointAsync (transaction As DbTransaction, eventData As TransactionEventData, result As InterceptionResult, Optional cancellationToken As CancellationToken = Nothing) As ValueTask(Of InterceptionResult)
Public Overridable Function CreatingSavepointAsync (transaction As DbTransaction, eventData As TransactionEventData, result As InterceptionResult, Optional cancellationToken As CancellationToken = Nothing) As ValueTask(Of InterceptionResult)

参数

transaction
DbTransaction

事务。

eventData
TransactionEventData

有关连接和事务的上下文信息。

result
InterceptionResult

表示当前结果(如果存在)。 如果某个以前的侦听器通过调用 Suppress()来禁止执行,则此值已IsSuppressed设置为 true 。 此值通常用作此方法实现的返回值。

cancellationToken
CancellationToken

等待 CancellationToken 任务完成时要观察的 。

返回

如果 IsSuppressedfalse,则 EF 将照常继续。 如果 IsSuppressedtrue,则 EF 将取消它要执行的操作。 对于任何未尝试取消该操作的侦听器,此方法的实现是返回 result 传入的值。

例外

适用于