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TrackingChannel Class

Note: This API is now obsolete.

The abstract base class that represents a tracking channel.


Namespace:  System.Workflow.Runtime.Tracking
Assembly:  System.Workflow.Runtime (in System.Workflow.Runtime.dll)

[ObsoleteAttribute("The System.Workflow.* types are deprecated.  Instead, please use the new types from System.Activities.*")]
public abstract class TrackingChannel

The TrackingChannel type exposes the following members.

Protected methodTrackingChannelWhen implemented in a derived class, initializes a new instance of the TrackingChannel class.

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 the default hash function. (Inherited from Object.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Protected methodInstanceCompletedOrTerminatedWhen implemented in a derived class, notifies a receiver of data on the tracking channel that the workflow instance associated with the tracking channel has either completed or terminated.
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Protected methodSendWhen implemented in a derived class, sends a TrackingRecord on the TrackingChannel.
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)


This material discusses types and namespaces that are obsolete. For more information, see Deprecated Types in Windows Workflow Foundation 4.5.

If a TrackingService is present, the runtime tracking infrastructure calls GetTrackingChannel to get a tracking channel for a workflow instance. The runtime tracking infrastructure uses this tracking channel to send tracking records associated with the workflow instance back to the host application whenever the tracking infrastructure matches a track point in the TrackingProfile associated with the workflow instance. Your application can treat this tracking information in any way you choose. For example, the SqlTrackingService writes tracking information to a SQL database.

To create a tracking channel for your tracking service, derive a class from the TrackingChannel base class. You can use the TrackingParameters object passed by the runtime tracking infrastructure in its call to your implementation of GetTrackingChannel to associate each instance of your tracking channel with a specific workflow instance. The workflow runtime engine requests a tracking channel from each tracking service that has provided a TrackingProfile for a workflow instance.

.NET Framework

Supported in: 4, 3.5, 3.0
Obsolete (compiler warning) in 4.5.2
Obsolete (compiler warning) in 4.5.1
Obsolete (compiler warning) in 4.5

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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.
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