Windows Dev Center

BackgroundTransferService Class

Enables the management of background transfer requests.


Namespace:  Microsoft.Phone.BackgroundTransfer
Assembly:  Microsoft.Phone (in Microsoft.Phone.dll)

public static class BackgroundTransferService

The BackgroundTransferService type exposes the following members.

Public propertyStatic memberRequestsGets an enumeration of all active transfer requests associated with the calling application.

Public methodStatic memberAddAdds a background transfer request to the queue.
Public methodStatic memberFindAttempts to return the background transfer request with the specified ID.
Public methodStatic memberRemoveAttempts to remove the background transfer request with the specified ID.

Transfer requests are created and configured using the BackgroundTransferRequest class. The BackgroundTransferService is used to submit requests, remove requests from the queue, and retrieve active requests.

Each application can have 25 requests queued at a given time. Attempting to add a request after this limit has been reached will throw an exception. It is the responsibility of the application to remove requests from the queue by using the Remove(BackgroundTransferRequest) method after they have completed.


If you use this API in your app, you must specify the following capabilities in the app manifest. Otherwise, your app might not work correctly or it might exit unexpectedly.


Windows Phone 8, Windows Phone OS 7.1

For more info, see App capabilities and hardware requirements for Windows Phone 8.

Windows Phone OS

Supported in: 8.1, 8.0, 7.1

Windows Phone

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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