DispatcherProcessingDisabled 结构

定义

public value class DispatcherProcessingDisabled : IDisposable

public struct DispatcherProcessingDisabled : IDisposable

type DispatcherProcessingDisabled = struct
    interface IDisposable

Public Structure DispatcherProcessingDisabled
Implements IDisposable

继承

Object

ValueType

DispatcherProcessingDisabled

实现

IDisposable

示例

以下示例演示如何禁用调度程序处理并重新启用调度程序处理。 DisableProcessing 在 using 语句中调用。 DisableProcessing 返回一个 DispatcherProcessingDisabled 结构，该结构用作 在使用 块完成时要释放的对象。 调用DisposeDispatcherProcessingDisabled结构可重新启用调度程序处理。

// The Dispose() method is called at the end of the using statement.
// Calling Dispose on the DispatcherProcessingDisabled structure, 
// which is returned from the call to DisableProcessing, will
// re-enalbe Dispatcher processing.
using (Dispatcher.DisableProcessing())
{
    // Do work while the dispatcher processing is disabled.
    Thread.Sleep(2000);
}

' The Dispose() method is called at the end of the using statement.
' Calling Dispose on the DispatcherProcessingDisabled structure, 
' which is returned from the call to DisableProcessing, will
' re-enable Dispatcher processing.
Using Dispatcher.DisableProcessing()
    ' Do work while the dispatcher processing is disabled.
    Thread.Sleep(2000)
End Using

注解

DisableProcessing 调用对象时返回对象 DispatcherProcessingDisabled 。

禁用调度程序处理是一种高级方法，旨在消除不相关的重新进入的可能性。

禁用处理的效果如下：

• CLR 锁不会在内部泵送消息。

• DispatcherFrame 不允许推送对象。

• 不允许消息处理。

调用DisposeDispatcherProcessingDisabled对象将重新启用调度程序处理。

方法

运算符

适用于

另请参阅

• DisableProcessing()