CoreDispatcher.TryRunAsync(CoreDispatcherPriority, DispatchedHandler) 方法

定义

命名空间:

Windows.UI.Core

尝试从工作线程在 UI 线程上计划指定的回调，并异步返回结果。

public:
 virtual IAsyncOperation<bool> ^ TryRunAsync(CoreDispatcherPriority priority, DispatchedHandler ^ agileCallback) = TryRunAsync;

/// [Windows.Foundation.Metadata.RemoteAsync]
IAsyncOperation<bool> TryRunAsync(CoreDispatcherPriority const& priority, DispatchedHandler const& agileCallback);

[Windows.Foundation.Metadata.RemoteAsync]
public IAsyncOperation<bool> TryRunAsync(CoreDispatcherPriority priority, DispatchedHandler agileCallback);

function tryRunAsync(priority, agileCallback)

Public Function TryRunAsync (priority As CoreDispatcherPriority, agileCallback As DispatchedHandler) As IAsyncOperation(Of Boolean)

参数

priority

CoreDispatcherPriority

指定事件调度的优先级。 将此设置为 CoreDispatcherPriority.Normal。

agileCallback

DispatchedHandler

调度事件时调度程序返回的回调。

返回

IAsyncOperation<Boolean>

IAsyncOperation<bool>

异步操作。

属性

RemoteAsyncAttribute

注解

如果在关闭 CoreDispatcher 时调用此方法，此方法将成功完成并返回 false。

另请参阅

• RunAsync(CoreDispatcherPriority, DispatchedHandler)