MessagePropertyFilter.Recoverable 属性

定义

命名空间:

System.Messaging

程序集:

System.Messaging.dll

获取或设置一个值，该值指示接收或查看消息时是否检索 Recoverable 属性信息。

public:
 property bool Recoverable { bool get(); void set(bool value); };

[System.Messaging.MessagingDescription("MsgRecoverable")]
public bool Recoverable { get; set; }

[<System.Messaging.MessagingDescription("MsgRecoverable")>]
member this.Recoverable : bool with get, set

Public Property Recoverable As Boolean

属性值

Boolean

如果接收 Recoverable 信息，则为 true；否则为 false。 默认值为 false。

属性

MessagingDescriptionAttribute

示例

下面的代码示例演示如何使用 Recoverable 属性。

// Set the queue's MessageReadPropertyFilter property 
// to enable the message's Recoverable property.
queue->MessageReadPropertyFilter->Recoverable = true;

// Peek at the message. Time out after ten seconds 
// in case the message was not delivered.
orderMessage = queue->Peek(TimeSpan::FromSeconds(10.0));

// Display the value of the message's 
// Recoverable property.
Console::WriteLine("Message.Recoverable: {0}", 
    orderMessage->Recoverable);

// Set the queue's MessageReadPropertyFilter property to enable the
// message's Recoverable property.
queue.MessageReadPropertyFilter.Recoverable = true;

// Peek at the message. Time out after ten seconds in case the message
// was not delivered.
orderMessage = queue.Peek(TimeSpan.FromSeconds(10.0));

// Display the value of the message's Recoverable property.
Console.WriteLine("Message.Recoverable: {0}",
    orderMessage.Recoverable);

注解

Recoverable类的 Message 属性指示是否保证消息的传递，即使当消息路由到目标队列时计算机崩溃也是如此。

如果保证邮件的传递，则消息将存储在每个步骤本地，直到消息成功转发到下一台计算机。 在消息上将 设置为 Message.Recoverabletrue 可能会影响吞吐量。

另请参阅

• Recoverable
• MessageQueue