DispatchTimer - Prevent the tick event to be triggered if the previous tick is still running

Question

In a Silverlight app, I have a block of code that has to run every 500ms. I am planning o use a DispatcherTimer to achieve this (see code below).

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Answer 1

In order make the event run successfull without getting a call from your DispatcherTimer again with in the previous tick completes stop the dispatcher timer after entering in to dt_Tick event and at the end of the tick event call the start again which will initializes the IsEnabled of DispatcherTimer again to true.