Beginning WF: Windows Workflow in .NET 4.0 by Mark Collins

By Mark Collins

Home windows Workflow origin is a ground-breaking addition to the center of the .NET Framework on the way to orchestrate human and approach interactions as a chain of workflows that may be simply mapped, analyzed, adjusted, and applied. As company difficulties turn into extra complicated, the necessity for a workflow-based answer hasn't ever been extra obvious. WF offers an easy and constant solution to version and enforce advanced difficulties. As a developer, you specialise in constructing the enterprise good judgment for person workflow projects. The runtime handles the execution of these initiatives when they were composed right into a workflow.

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Example text

FlowDecision activity There is a connection point on the left for the True branch and a connection point on the right for the False branch. The Condition is also displayed. Notice the small yellow triangle at the top-right corner. If you click it, the Condition property remains displayed, even when the mouse is not hovered over the activity. You can change the text for the True and False branches. In the Properties window, enter Morning for the FalseLabel property and Afternoon for the TrueLabel property.

Figure 1-12. info CHAPTER 1 ■ BUILDING A SIMPLE WORKFLOW ■ Tip Notice the red error circles on the diagram. If you hover the mouse over them, they will display the associated warning/error. The error on the If activity lets you know that you haven’t specified the Condition property. The warning on the Sequence activity simply indicates that one or more child activities have an error. In the Properties window, change the DisplayName to Adjust for PM. The If activity consists of three elements. The Condition specifies the logic that is evaluated.

The diagram should look similar to the one shown in Figure 1-20. info CHAPTER 1 ■ BUILDING A SIMPLE WORKFLOW Figure 1-20. Collapsed workflow diagram This gives you a quick way to see the top-level activities. Now click the Expand All link. This expands all the activities, but now you can see only part of the diagram. Click the Overview control at the bottomright corner of the designer, which displays a window that shows the entire diagram. The yellow box indicates the viewable area. You can drag this around, which will pan the main window to the desired area.

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