TaskFactoryExtensions.FromAsync 方法 (TaskFactory, Func<AsyncCallback, Object, IAsyncResult>, Action<IAsyncResult>, Object, CancellationToken, TaskCreationOptions, TaskScheduler)
命名空間： Microsoft.TeamFoundation.Threading
組件： Microsoft.TeamFoundation.Controls (在 Microsoft.TeamFoundation.Controls.dll 中)
語法
'宣告
<ExtensionAttribute> _
Public Shared Function FromAsync ( _
taskFactory As TaskFactory, _
beginMethod As Func(Of AsyncCallback, Object, IAsyncResult), _
endMethod As Action(Of IAsyncResult), _
state As Object, _
cancellationToken As CancellationToken, _
creationOptions As TaskCreationOptions, _
taskScheduler As TaskScheduler _
) As Task
public static Task FromAsync(
this TaskFactory taskFactory,
Func<AsyncCallback, Object, IAsyncResult> beginMethod,
Action<IAsyncResult> endMethod,
Object state,
CancellationToken cancellationToken,
TaskCreationOptions creationOptions,
TaskScheduler taskScheduler
)
參數
- taskFactory
型別：System.Threading.Tasks.TaskFactory
- beginMethod
型別：System.Func<AsyncCallback, Object, IAsyncResult>
- endMethod
型別：System.Action<IAsyncResult>
- state
型別：System.Object
- cancellationToken
型別：System.Threading.CancellationToken
- creationOptions
型別：System.Threading.Tasks.TaskCreationOptions
- taskScheduler
型別：System.Threading.Tasks.TaskScheduler
傳回值
型別：System.Threading.Tasks.Task
使用注意事項
在 Visual Basic 和 C# 中，您可以在任何 TaskFactory 型別物件中呼叫這個方法以做為執行個體。使用執行個體方法語法呼叫這個方法時，請省略第一個參數。如需詳細資訊，請參閱擴充方法 (Visual Basic)或擴充方法 (C# 程式設計手冊)。
.NET Framework 安全性
- 完全信任立即呼叫者。這個成員無法供部分信任的程式碼使用。如需詳細資訊，請參閱從部分受信任程式碼使用程式庫。