SetStateEventArgs Class
Represents a class that is used as an argument to set the state of a StateMachineWorkflowActivity.
Assembly: System.Workflow.Activities (in System.Workflow.Activities.dll)
The SetStateEventArgs type exposes the following members.
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Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
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Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
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GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
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GetType | Gets the Type of the current instance. (Inherited from Object.) |
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MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
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ToString | Returns a string that represents the current object. (Inherited from Object.) |
The StateMachineWorkflowActivity allows for setting the state from the host application. This enables the host application to override the current state of a state machine. This can be accomplished by enqueuing an instance of the SetStateEventArgs class to the WorkflowQueue named by the constant StateMachineWorkflowActivity.SetStateQueueName.
A simpler way to accomplish this is to use the SetState method in the StateMachineWorkflowInstance class.
You can use the SetState method to perform a SetState operation from the host, or you can do it yourself by enqueuing an event to the state machine workflow as shown in the following example.
public void SetState(string targetStateName)
{
if (targetStateName == null)
{
throw new ArgumentNullException("targetStateName");
}
SetStateEventArgs args1 = new SetStateEventArgs(targetStateName);
this.WorkflowInstance.EnqueueItemOnIdle("SetStateQueue", args1, null, null);
}
The state machine workflow uses a special queue called SetStateQueue to listen to these special events.
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.
