ServiceBusReceiveActions.PeekMessagesAsync Method
Definition
Important
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Fetches a list of active messages without changing the state of the receiver or the message source.
public virtual System.Threading.Tasks.Task<System.Collections.Generic.IReadOnlyList<Azure.Messaging.ServiceBus.ServiceBusReceivedMessage>> PeekMessagesAsync (int maxMessages, long? fromSequenceNumber = default, System.Threading.CancellationToken cancellationToken = default);abstract member PeekMessagesAsync : int * Nullable<int64> * System.Threading.CancellationToken -> System.Threading.Tasks.Task<System.Collections.Generic.IReadOnlyList<Azure.Messaging.ServiceBus.ServiceBusReceivedMessage>>
override this.PeekMessagesAsync : int * Nullable<int64> * System.Threading.CancellationToken -> System.Threading.Tasks.Task<System.Collections.Generic.IReadOnlyList<Azure.Messaging.ServiceBus.ServiceBusReceivedMessage>>Public Overridable Function PeekMessagesAsync (maxMessages As Integer, Optional fromSequenceNumber As Nullable(Of Long) = Nothing, Optional cancellationToken As CancellationToken = Nothing) As Task(Of IReadOnlyList(Of ServiceBusReceivedMessage))Parameters
- maxMessages
- Int32
The maximum number of messages that will be fetched.
An optional sequence number from where to peek the message. This corresponds to the SequenceNumber.
- cancellationToken
- CancellationToken
An optional CancellationToken instance to signal the request to cancel the operation.
Returns
An IReadOnlyList<T> of messages that were peeked.
Remarks
Unlike a received message, a peeked message will not have a lock token associated with it, and hence it cannot be Completed/Abandoned/Deferred/Deadlettered/Renewed. Also, unlike ReceiveMessageAsync(Nullable<TimeSpan>, CancellationToken), this method will fetch even Deferred messages (but not Deadlettered messages).
