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TrackingParticipant Class

The base class for workflow extensions that interact with the workflow tracking infrastructure and access tracking records.


Namespace:  System.Activities.Tracking
Assembly:  System.Activities (in System.Activities.dll)

public abstract class TrackingParticipant

The TrackingParticipant type exposes the following members.

Protected methodTrackingParticipantWhen implemented in a derived class, creates a new instance of the derived class.

Public propertyTrackingProfileThe tracking profile object used by the tracking participant. Before adding the tracking participant to the workflow extensions, the tracking profile is set on the participant.

Protected methodBeginTrackWhen implemented in a derived class, begins asynchronous processing of the tracking record.
Protected methodEndTrackWhen implemented in a derived class, represents the end of an asynchronous tracking operation.
Public methodEquals(Object)Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetHashCodeServes as a hash function for a particular type. (Inherited from Object.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)
Protected methodTrackWhen implemented in a derived class, used to synchronously process the tracking record.

A tracking participant is registered to receive tracking records. Currently, any class that implements the tracking participant can be registered with the workflow instance to receive tracking records. If the tracking participant is third party code, ensure that this is not malicious code. The tracking participants run in the same process as the workflow instance and in the case of malicious tracking participants, this code could affect the overall workflow execution. The tracking records are delivered to the registered tracking participants as the workflow executes, so the developer should ensure that the tracking participant does not affect the running workflow by performing unintended operations within the track method. Examples of this could be the alteration of workflow variables or operations that take a long time.

.NET Framework

Supported in: 4

.NET Framework Client Profile

Supported in: 4

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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