WorkflowQueuingService Class
Assembly: System.Workflow.Runtime (in system.workflow.runtime.dll)
The following code example demonstrates a method, named CreateQueue, that initializes a WorkflowQueuingService object by calling the ActivityExecutionContext.GetService method. The code then uses the Exists method to determine if a WorkflowQueue with a specified name exists. If it does not exist, the code calls the CreateWorkflowQueue method; if it does the code calls the GetWorkflowQueue method.
This code example is part of the File Watcher Activity SDK Sample from the FileSystemEvent.cs file. For more information, see File System Watcher Activity.
private WorkflowQueue CreateQueue(ActivityExecutionContext context) { Console.WriteLine("CreateQueue"); WorkflowQueuingService qService = context.GetService<WorkflowQueuingService>(); if (!qService.Exists(this.QueueName)) { qService.CreateWorkflowQueue(this.QueueName, true); } return qService.GetWorkflowQueue(this.QueueName); }
Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.