WorkflowInstance.Load Method
Definition
Important
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Loads a previously unloaded workflow instance.
public:
void Load();public void Load ();member this.Load : unit -> unitPublic Sub Load ()Exceptions
The workflow runtime engine is not running.
Examples
The following example demonstrates how to load a previously unloaded WorkflowInstance object.
// Create a WorkflowRuntime object
WorkflowRuntime workflowRuntime = new WorkflowRuntime();
// Create a new instance of the out-of-box SqlWorkflowPersistenceService
SqlWorkflowPersistenceService persistenceService =
new SqlWorkflowPersistenceService(
"Initial Catalog=SqlPersistenceService;Data Source=localhost;Integrated Security=SSPI;");
// Add the service to the runtime
workflowRuntime.AddService(persistenceService);
// Create a WorkflowInstance object
WorkflowInstance workflowInstance = workflowRuntime.CreateWorkflow(typeof(Workflow1));
// Start the workflow instance
workflowInstance.Start();
//Unload the instance
workflowInstance.Unload();
//Reload the previously unloaded instance
workflowInstance.Load();
' Create a WorkflowRuntime object
Dim workflowRuntime As New WorkflowRuntime()
' Create a new instance of the out-of-box SqlWorkflowPersistenceService
Dim persistenceService As _
New SqlWorkflowPersistenceService( _
"Initial Catalog=SqlPersistenceServiceData Source=localhostIntegrated Security=SSPI")
' Add the service to the runtime
workflowRuntime.AddService(persistenceService)
' Create a WorkflowInstance object
Dim workflowInstance As WorkflowInstance = workflowRuntime.CreateWorkflow(GetType(Workflow1))
' Start the workflow instance
workflowInstance.Start()
'Unload the instance
workflowInstance.Unload()
'Reload the previously unloaded instance
workflowInstance.Load()
Remarks
Load is synchronous; if the workflow instance can be loaded, Load will return after the workflow instance has been loaded into memory and scheduled by the workflow runtime engine. The runtime raises the WorkflowLoaded event after the persistence service has restored the workflow instance in memory, but before the workflow runtime engine schedules the instance.
