RelationalDatabaseFacadeExtensions.OpenConnectionAsync 方法

定義

命名空間:

Microsoft.EntityFrameworkCore

組件:

Microsoft.EntityFrameworkCore.Relational.dll

套件:

Microsoft.EntityFrameworkCore.Relational v8.0.0

開啟基礎 DbConnection 。

public static System.Threading.Tasks.Task OpenConnectionAsync (this Microsoft.EntityFrameworkCore.Infrastructure.DatabaseFacade databaseFacade, System.Threading.CancellationToken cancellationToken = default);

static member OpenConnectionAsync : Microsoft.EntityFrameworkCore.Infrastructure.DatabaseFacade * System.Threading.CancellationToken -> System.Threading.Tasks.Task

<Extension()>
Public Function OpenConnectionAsync (databaseFacade As DatabaseFacade, Optional cancellationToken As CancellationToken = Nothing) As Task

參數

databaseFacade

DatabaseFacade

DatabaseFacade內容的 。

cancellationToken

CancellationToken

CancellationToken等候工作完成時要觀察的 。

傳回

Task

代表非同步作業的工作。

例外狀況

OperationCanceledException

如果取消 CancellationToken。

備註

如需詳細資訊 和範例，請參閱連線和連接字串 。