AsyncOperationCompletedHandler<TResult> 委托

定义

命名空间:

Windows.Foundation

表示处理异步操作的已完成事件的方法。

/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.FoundationContract, 65536)]
/// [Windows.Foundation.Metadata.Guid(4242337836, 58840, 17528, 145, 90, 77, 144, 183, 75, 131, 165)]
template <typename TResult>
class AsyncOperationCompletedHandler : MulticastDelegate

[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.FoundationContract), 65536)]
[Windows.Foundation.Metadata.Guid(4242337836, 58840, 17528, 145, 90, 77, 144, 183, 75, 131, 165)]
public delegate void AsyncOperationCompletedHandler<TResult>(IAsyncOperation<TResult> asyncInfo, AsyncStatus asyncStatus);

Public Delegate Sub AsyncOperationCompletedHandler(Of TResult)(asyncInfo As IAsyncOperation(Of TResult), asyncStatus As AsyncStatus)

类型参数

TResult

参数

asyncInfo

IAsyncOperation<TResult>

异步操作。

asyncStatus

AsyncStatus

枚举值之一。

属性

ContractVersionAttribute GuidAttribute

Windows 要求

设备系列	Windows 10 (在 10.0.10240.0 中引入)
API contract	Windows.Foundation.FoundationContract (在 v1.0 中引入)

示例

有关演示如何处理 Completed 事件的 C++/WinRT 代码示例，请参阅异步操作和操作的委托类型。