DispatcherProcessingDisabled Estrutura

Definição

public value class DispatcherProcessingDisabled : IDisposable

public struct DispatcherProcessingDisabled : IDisposable

type DispatcherProcessingDisabled = struct
    interface IDisposable

Public Structure DispatcherProcessingDisabled
Implements IDisposable

Herança

Object

ValueType

DispatcherProcessingDisabled

Implementações

IDisposable

Exemplos

O exemplo a seguir mostra como desabilitar o processamento do Dispatcher e reabilitar o processamento do Dispatcher.The following example shows how to disable dispatcher processing and re-enable dispatcher processing. DisableProcessingé chamado em uma instrução using .DisableProcessing is called in a using statement. DisableProcessingRetorna uma DispatcherProcessingDisabled estrutura que é usada como o objeto a ser Descartado quando o bloco using é concluído.DisableProcessing returns a DispatcherProcessingDisabled structure which is used as the object to be disposed when the using block finishes. A Dispose chamada na DispatcherProcessingDisabled estrutura habilita novamente o processamento do Dispatcher.Calling Dispose on the DispatcherProcessingDisabled structure re-enables dispatcher processing.

// 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

Comentários

DisableProcessingRetorna um DispatcherProcessingDisabled objeto quando ele é chamado.DisableProcessing returns a DispatcherProcessingDisabled object when it is called.

A desabilitação do processamento do Dispatcher é um método avançado que se destina a eliminar a chance de reentrância não relacionada.Disabling dispatcher processing is an advanced method that is intended to eliminate the chance of unrelated reentrancy.

Os efeitos da desabilitação do processamento são os seguintes:The effects of disabling processing are as follows:

• Os bloqueios de CLR não Bombeam as mensagens internamente.CLR locks will not pump messages internally.

• DispatcherFrameos objetos não podem ser enviados por push.DispatcherFrame objects are not allowed to be pushed.

• O processamento de mensagens não é permitido.Message processing is not permitted.

A Dispose chamada no DispatcherProcessingDisabled objeto habilitará novamente o processamento do Dispatcher.Calling Dispose on the DispatcherProcessingDisabled object will re-enable dispatcher processing.

Métodos

Operadores

Aplica-se a

Veja também

• DisableProcessing()