| CloudQueuesProviderListQueuesAsync Method | 
This API is preliminary and subject to change.
            Gets a list of queues.
            
 
Namespace: net.openstack.Providers.RackspaceAssembly: openstacknet (in openstacknet.dll) Version: 1.7.7+Branch.master.Sha.25d803f397c8693c2c13777ef6675f796f520f2c
 Syntax
Syntaxpublic Task<ReadOnlyCollectionPage<CloudQueue>> ListQueuesAsync(
	QueueName marker,
	Nullable<int> limit,
	bool detailed,
	CancellationToken cancellationToken
)
Public Function ListQueuesAsync ( 
	marker As QueueName,
	limit As Nullable(Of Integer),
	detailed As Boolean,
	cancellationToken As CancellationToken
) As Task(Of ReadOnlyCollectionPage(Of CloudQueue))
public:
virtual Task<ReadOnlyCollectionPage<CloudQueue^>^>^ ListQueuesAsync(
	QueueName^ marker, 
	Nullable<int> limit, 
	bool detailed, 
	CancellationToken cancellationToken
) sealed
abstract ListQueuesAsync : 
        marker : QueueName * 
        limit : Nullable<int> * 
        detailed : bool * 
        cancellationToken : CancellationToken -> Task<ReadOnlyCollectionPage<CloudQueue>> 
override ListQueuesAsync : 
        marker : QueueName * 
        limit : Nullable<int> * 
        detailed : bool * 
        cancellationToken : CancellationToken -> Task<ReadOnlyCollectionPage<CloudQueue>> Parameters
- marker
- Type: net.openstack.Core.Domain.QueuesQueueName
 The name of the last queue in the previous list. The resulting collection of queues will start with the first queue after this value, when sorted using Ordinal. If this value is , the list starts at the beginning.
- limit
- Type: SystemNullableInt32
 The maximum number of queues to return. If this value is , a provider-specific default value is used.
- detailed
- Type: SystemBoolean
 to return detailed information about each queue; otherwise, .
- cancellationToken
- Type: System.ThreadingCancellationToken
 The CancellationToken that the task will observe.
Return Value
Type: 
TaskReadOnlyCollectionPageCloudQueueA 
Task object representing the asynchronous operation. When the task completes successfully, the 
Result property will contain placeholder.
Implements
IQueueingServiceListQueuesAsync(QueueName, NullableInt32, Boolean, CancellationToken) Exceptions
Exceptions Examples
ExamplesThe following example demonstrates the use of this method using the CloudQueuesProvider
            implementation of the IQueueingService. For more information about creating the provider, see
            CloudQueuesProvider(CloudIdentity, String, Guid, Boolean, IIdentityProvider).
    |  Note | 
|---|
| 
        The following code uses the / operators. For more information
        about using these operators in your code, see Asynchronous Services.
       | 
IQueueingService queueingService = new CloudQueuesProvider(identity, region, clientId, internalUrl, identityProvider);
ReadOnlyCollectionPage<CloudQueue> queuesPage = await queueingService.ListQueuesAsync(null, null, true, CancellationToken.None);
ReadOnlyCollection<CloudQueue> queues = await queuesPage.GetAllPagesAsync(CancellationToken.None, null);
Dim queueingService As IQueueingService = New CloudQueuesProvider(identity, region, clientId, internalUrl, identityProvider)
Dim queuesPage = Await queueingService.ListQueuesAsync(Nothing, Nothing, True, CancellationToken.None)
Dim queues = Await queuesPage.GetAllPagesAsync(CancellationToken.None, Nothing)
No code example is currently available or this language may not be supported.
let queueingService = new CloudQueuesProvider(identity, region, clientId, internalUrl, identityProvider)
let! queuesPage = queueingService.ListQueuesAsync(null, Nullable(), true, CancellationToken.None) |> Async.AwaitTask
let! queues = queuesPage.GetAllPagesAsync(CancellationToken.None, null) |> Async.AwaitTask
      The following code shows demonstrates the same example using the 
    Task Parallel Library
  
      instead of the / operators.
    
  IQueueingService queueingService = new CloudQueuesProvider(identity, region, clientId, internalUrl, identityProvider);
Task<ReadOnlyCollectionPage<CloudQueue>> queuesPageTask = queueingService.ListQueuesAsync(null, null, true, CancellationToken.None);
Task<ReadOnlyCollection<CloudQueue>> queuesTask =
    queuesPageTask
    .ContinueWith(task => task.Result.GetAllPagesAsync(CancellationToken.None, null))
    .Unwrap();Dim queueingService As IQueueingService = New CloudQueuesProvider(identity, region, clientId, internalUrl, identityProvider)
Dim queuesPageTask = queueingService.ListQueuesAsync(Nothing, Nothing, True, CancellationToken.None)
Dim queuesTask = queuesPageTask _
    .ContinueWith(Function(task) task.Result.GetAllPagesAsync(CancellationToken.None, Nothing)) _
    .Unwrap()void ListQueues()
{
    IQueueingService^ queueingService = gcnew CloudQueuesProvider(identity, region, clientId, internalUrl, identityProvider);
    Task<ReadOnlyCollectionPage<CloudQueue^>^>^ queuesPageTask = queueingService->ListQueuesAsync(nullptr, Nullable<int>(), true, CancellationToken::None);
    auto func = gcnew Func<Task<ReadOnlyCollectionPage<CloudQueue^>^>^, Task<ReadOnlyCollection<CloudQueue^>^>^>(GetAllPagesContinuationAsync<CloudQueue^>);
    Task<ReadOnlyCollection<CloudQueue^>^>^ queuesTask = TaskExtensions::Unwrap(queuesPageTask->ContinueWith(func));
}
generic<class T>
static Task<ReadOnlyCollection<T>^>^ GetAllPagesContinuationAsync(Task<ReadOnlyCollectionPage<T>^>^ pageTask)
{
    return ReadOnlyCollectionPageExtensions::GetAllPagesAsync(pageTask->Result, CancellationToken::None, static_cast<IProgress<ReadOnlyCollectionPage<T>^>^>(nullptr));
}let queueingService = new CloudQueuesProvider(identity, region, clientId, internalUrl, identityProvider)
let queuesPageTask = queueingService.ListQueuesAsync(null, Nullable(), true, CancellationToken.None)
let queuesTask = queuesPageTask.ContinueWith(fun (task:Task<ReadOnlyCollectionPage<CloudQueue>>) -> task.Result.GetAllPagesAsync(CancellationToken.None, null)) |> TaskExtensions.Unwrap
 Version Information
Version Information.NET Framework
Supported in: 4.5
openstack.net
Supported in: 1.6, 1.5, 1.4, 1.3.6
 See Also
See Also