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StateMachineWorkflowInstance Class

Represents a class that manages the current instance of a StateMachineWorkflowActivity. This class cannot be inherited.

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

public sealed class StateMachineWorkflowInstance

This class also provides the query interface over the current instance of the StateMachineWorkflowActivity. By using an instance of this class, you can make various queries on the StateMachineWorkflowInstance.

Typical queries that can be made are as follows:

  • Current state of the state machine.

  • Possible transitions from the current state.

  • History of transitions for the state machine instance.

  • Enumeration of all the states in the state machine.


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

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

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

.NET Framework

Supported in: 3.5, 3.0