Workflows can use both out-of-box activities and custom activities. The term "Workflow" here usually refers to the root activity that is executed by the host. The single parent activity is then executed using WorkflowApplication or WorkflowInvoker, and runs as a workflow. If a workflow is assembled in code, activities are instantiated like other CLR objects, and assembled into collections of a single parent activity, usually a Sequence or Flowchart. Workflow arguments and variables are also created and assigned within the designer. If the designer is used, activities are assembled on the workflow designer canvas by dragging them from the toolbox. Workflows are created either by being defined in XAML Extensible Application Markup Language using the workflow designer, or by being assembled programmatically in a. Need to interact with other systems, such as a database, website or other client application, or web service.Have advanced business logic that might require workflow execution to travel down different branches depending on different circumstances.Have several inputs into the workflow that may come hours or days apart.Have specific business logic that may need to change periodically, such as the tax or shipping calculation needed to determine the purchase price of an item, or the series of steps needed to approve a purchase, hire, or process.Typically, business processes to be modeled as workflows have the following features: These processes can execute in a short amount of time, but are typically long-running, in which the application will need to shut down to conserve memory between steps. Windows Workflow Foundation is used to create applications that execute an ordered business process, such as the steps needed to approve a document, hire a candidate for a position, or make a purchase. Future versions and releases of Windows Phone will include an updated State Machine and Dynamic Update.NET 4 workflows using the Interop activity. Activities created in previous versions of the.Most notably, there is no longer a Workflow Runtime object in version 4 workflows are executed directly using WorkflowApplication or WorkflowInvoker instead. NET 4 uses the System.Activities namespace. NET Framework 4, Windows Workflow Foundation was updated extensively, with new features such as Data Contract Resolver, Flowchart, and other flow control activities added. The new features of Workflow in version 3.5 use the System.ServiceModel namespace. With the new ReceiveActivity, workflows could respond to incoming WCF messages. NET Framework 3.5, messaging activities were introduced that integrated Workflow with Windows Communication Foundation (WCF). Workflows in version 3 were created using either the Sequential model (in which activities are executed in order, with the completion of one activity leading to the next), or the State Machine model (in which activities are executed in response to external events). NET Framework, and primarily uses the, , and namespaces.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |