Microsoft SharePoint. Building Office 2007 Solutions in VB 2005 ...

CHAPTER 7 ■ SHAREPOINT CUSTOM FEATURES AND WORKFLOWS 265Members are either variables or property code structures that maintain the state of theworkflow. For example, if you are assigning a new task in a workflow, the CreateTask activityshown in Figure 7-8 will require you to define a member for tracking the unique identifier ofthe created task. You may also have members to track the values of the fields associated withthe tasks. The workflow designer provides an interface for defining and tracking members andwill automatically generate the required code in your project. You’ll get a chance to use theseinterfaces in the exercise at the end of the chapter.Once you have configured the activities, you can write code to run when each step of theprocess is executed. Each activity has methods associated with it that can be automaticallygenerated in your project. In the designer, you can right-click any control and select GenerateHandlers from the context menu. This will stub out the available methods for the activities inyour code.Creating InfoPath FormsAlong with creating the workflow, you must also create a series of InfoPath forms or ASPX filesin order to use the workflow in SharePoint. The forms or pages are used to provide an interfaceto initiate a workflow or complete an assigned task. In this chapter, you’ll make use of InfoPathforms for this purpose. These InfoPath forms must be fully trusted, compliant with InfoPathForms Services, and contain fields for use inside of the workflow you create in Visual Studio.You have already seen examples of these forms when you used the built-in MOSS workflows.Figure 7-9 shows an example of such a form seen when the Approval workflow is started.Figure 7-9. InfoPath forms are used to gather workflow data.