MessagePropertyFilter.IsFirstInTransaction 屬性
定義
重要
部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。
取得或設定值，指出在接收或窺視訊息時是否要擷取 IsFirstInTransaction 屬性資訊。
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屬性值
true 表示接收 IsFirstInTransaction 資訊，否則為 false。 預設為 false。
- 屬性
範例
下列程式代碼範例示範 屬性的使用 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);
// 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);
備註
類別 IsFirstInTransaction 的 Message 屬性是透過接收應用程式來驗證訊息是否為單一交易中傳送至單一佇列的第一個訊息。
