ISession.Subscribe Method (IList(Subscription), Identity, String, SubscriptionPreprocessMode)

ISessionSubscribe Method (IListSubscription, Identity, String, SubscriptionPreprocessMode)

Initiates a request to receive asynchronous updates to the specified topics.

Upon completion of this request a SUBSCRIPTION_STATUS event will be published for each topic in the subscription list containing a message with the result for one topic. A "SubscriptionStarted" message will be generated if the subscription was successfully initiated. If the subscription fails for any topic a "SubscriptionFailure" message containing the failure reason will be generated.

Any subscriptions in subscriptionList which were not given a application generated CorrelationID will have a session generated CorrelationID set.

Multiple subscriptions to the same subscription string are valid and each will have their own, unique CorrelationID.

Namespace: Bloomberglp.Blpapi
Assembly: Bloomberglp.Blpapi (in Bloomberglp.Blpapi.dll) Version: 3.23.1.1

Syntax

C++

Copy

IList<SubscriptionPreprocessError> Subscribe(
	IList<Subscription> subscriptionList,
	Identity identity,
	string requestLabel,
	SubscriptionPreprocessMode mode
)

Function Subscribe ( 
	subscriptionList As IList(Of Subscription),
	identity As Identity,
	requestLabel As String,
	mode As SubscriptionPreprocessMode
) As IList(Of SubscriptionPreprocessError)

IList<SubscriptionPreprocessError^>^ Subscribe(
	IList<Subscription^>^ subscriptionList, 
	Identity^ identity, 
	String^ requestLabel, 
	SubscriptionPreprocessMode mode
)

abstract Subscribe : 
        subscriptionList : IList<Subscription> * 
        identity : Identity * 
        requestLabel : string * 
        mode : SubscriptionPreprocessMode -> IList<SubscriptionPreprocessError>

Parameters

subscriptionList

Type: System.Collections.GenericIListSubscription
A list of Subscriptions to subscribe.

Must not be null or empty.

The CorrelationID objects in the subscriptions must be unique and not in use.

identity

Type: Bloomberglp.BlpapiIdentity
The authorized user for whom this subscription is being initiated.

If null the session identity will be used if its been authorized.

requestLabel

Type: SystemString
A label which will be recorded along with any diagnostics for this operation.

mode

Type: Bloomberglp.BlpapiSubscriptionPreprocessMode
Determines how to preprocess subscriptions. Refer to SubscriptionPreprocessMode for an explanation of the available modes.

Return Value

Type: IListSubscriptionPreprocessError
A list of SubscriptionPreprocessErrors or a null list depending on mode. Refer to SubscriptionPreprocessMode for more details.

Reference

ISession Interface

Subscribe Overload

Bloomberglp.Blpapi Namespace