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26-8-2008 07:41:4311-8-2008 21:09:4519-10-2006 11:31:35

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Parallel Activity
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Summary

The order in which child activities are run is non-deterministic.

The ParallelActivity is a CompositeActivity, meaning the ParallelActivity can contain other activities. The SequenceActivity activity is the only activity that can be the child of a ParallelActivity.

Only one activity can run at a time.

The ParallelActivity only finishes when all children are complete.

The ParallelActivity is especially useful when there are one or more blocking activities, such as the DelayActivity activity, in one or more of the branches. In this scenario, the ParallelActivity will actually switch to a different branch when the DelayActivity is blocked. If there are no blocking activities in any one of the ParallelActivity branches then the activity uses a non-deterministic sequence.

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