Windows Workflow Foundation What is hot what is

Windows Workflow Foundation What is hot, what is not? Maurice de Beijer ABL – The Problem Solver

Wie ben ik? • • Maurice de Beijer. The Problem Solver. Visual Basic MVP. Blog: http: //msmvps. com/blogs/ theproblemsolver/default. aspx • Web: http: //www. The. Problem. Solver. nl http: //www. Windows. Workflow. Foundation. eu http: //wiki. Windows. Workflow. Foundation. eu • E-mail: mauricedb@computer. org

Agenda • • Waarom Windows Workflow Foundation? Een overzicht van WF. Een workflow maken. External Data Exchange. Transacties. Queues. Event driven.

Een plaatje zegt meer dan 1000 woorden!

Workflows maken Markup Only Markup + Code only XAML C#/VB Workflow Compiler Markup Only XAML C#/VB Compiler NET Assembly Workflow Instance Workflow Runtime

Workflows uitvoeren Idle! Workflow Runtime Workflow Instance Runtime Services Loader XAML Persistence Host Application Workflow Instance

Activities • While. Activity – Code. Condition – Declarative rule condition • • Sequence. Activity If. Else. Activity Code. Activity Delay. Activity

External Data Exchange • External. Data. Exchange. Service • Interface met External. Data. Exchange attribuut. • Functie aanroep van de workflow naar de service. • Event met External. Data. Event. Args van de service terug naar de workflow.

Transacties • Transaction. Scope. Activity – Atomic, Consistent, Isolation, and Durable (ACID) • Compensatable. Transaction. Scope. Activity – Voor lang lopende transacties. • Work. Batch – Actie pas uitvoeren als de workflow persist wordt. • Een Workflow. Persistence. Service is verplicht!

Custom Activities en Queues • Workflow. Queuing. Service – Create. Workflow. Queue() • Workflow. Queue – Registreer Queue. Item. Available event. – Dequeue() • Workflow. Runtime – Get. Workflow(instance. Id) • Workflow. Instance – instance. Enqueue. Item("Queue. Name", "Data object", IPending. Work, work. Item)

Custom Activities en Events • IEvent. Activity – Handle. External. Event. Activity – Web. Service. Input. Activity – Delay. Activity – Custom activities • Listen. Activity • Event. Driven. Activity – Conditioned. Activity. Group – State. Activity

Vragen? http: //www. Windows. Workflow. Foundation. eu mauricedb@computer. org