6.5. Hello WF4

In this section, we will write a simple workflow that will handle a booking for a movie theater. Our example workflow will do the following:

  • Process a booking for a specific film.

  • Check if seating is available for the requested showing. In our example, to keep everything simple, if less than five tickets are requested, then the booking will succeed.

  • Return a Boolean value indicating whether the booking was successful and a hard-coded alphanumeric ticket reference (blank if unsuccessful).

WF4 is a radical change, so even if you are an experienced WF developer, please take the time to work your way through this example, as the designer has changed completely and a number of new concepts have been introduced.

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