MessagePropertyFilter.IsFirstInTransaction 属性
定义
重要
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获取或设置一个值，该值指示接收或查看消息时是否检索 IsFirstInTransaction 属性信息。
public:
property bool IsFirstInTransaction { bool get(); void set(bool value); };[System.Messaging.MessagingDescription("MsgIsFirstInTransaction")]
public bool IsFirstInTransaction { get; set; }[<System.Messaging.MessagingDescription("MsgIsFirstInTransaction")>]
member this.IsFirstInTransaction : bool with get, setPublic Property IsFirstInTransaction As Boolean属性值
如果接收 IsFirstInTransaction 信息，则为 true；否则为 false。 默认值为 false。
- 属性
示例
下面的代码示例演示如何使用 IsFirstInTransaction 属性。
// Set the queue's MessageReadPropertyFilter property
// to enable the message's IsFirstInTransaction property.
queue->MessageReadPropertyFilter->
IsFirstInTransaction = 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
// IsFirstInTransaction property.
Console::WriteLine("Message.IsFirstInTransaction: {0}",
orderMessage->IsFirstInTransaction);
// Set the queue's MessageReadPropertyFilter property to enable the
// message's IsFirstInTransaction property.
queue.MessageReadPropertyFilter.IsFirstInTransaction = 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 IsFirstInTransaction property.
Console.WriteLine("Message.IsFirstInTransaction: {0}",
orderMessage.IsFirstInTransaction);
注解
IsFirstInTransaction接收应用程序使用 类的 Message 属性来验证消息是否是单个事务中发送到单个队列的第一条消息。
