DbConnectionInterceptor.ConnectionFailedAsync 方法

定义

命名空间:

Microsoft.EntityFrameworkCore.Diagnostics

程序集:

Microsoft.EntityFrameworkCore.Relational.dll

包:

Microsoft.EntityFrameworkCore.Relational v8.0.0

打开连接失败并出现异常时调用。

public virtual System.Threading.Tasks.Task ConnectionFailedAsync (System.Data.Common.DbConnection connection, Microsoft.EntityFrameworkCore.Diagnostics.ConnectionErrorEventData eventData, System.Threading.CancellationToken cancellationToken = default);

abstract member ConnectionFailedAsync : System.Data.Common.DbConnection * Microsoft.EntityFrameworkCore.Diagnostics.ConnectionErrorEventData * System.Threading.CancellationToken -> System.Threading.Tasks.Task
override this.ConnectionFailedAsync : System.Data.Common.DbConnection * Microsoft.EntityFrameworkCore.Diagnostics.ConnectionErrorEventData * System.Threading.CancellationToken -> System.Threading.Tasks.Task

Public Overridable Function ConnectionFailedAsync (connection As DbConnection, eventData As ConnectionErrorEventData, Optional cancellationToken As CancellationToken = Nothing) As Task

参数

connection

DbConnection

连接。

eventData

ConnectionErrorEventData

有关连接的上下文信息。

cancellationToken

CancellationToken

等待 CancellationToken 任务完成时要观察的 。

返回

Task

表示异步操作的 Task。

实现

ConnectionFailedAsync(DbConnection, ConnectionErrorEventData, CancellationToken)

例外

OperationCanceledException

如果已取消 CancellationToken。