Demonstration of Async Event processing in PowerShell v2

AsyncEvents

# Illustration (based on concepts in http://blogs.technet.com/b/heyscriptingguy/archive/2011/06/16/use-asynchronous-event-handling-in-powershell.aspx
#   and code nicked from an answer in http://social.technet.microsoft.com/Forums/en-US/96b339e2-e9da-4802-a66d-be619aeb21ac/execute-function-one-time-in-every-10-mins-in-windows-powershell 
#   )

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# PASTE LINES BELOW INTO CONSOLE
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## Create an Timer instance 
$timer = New-Object Timers.Timer
## Now setup the Timer instance to fire events
$timer.Interval = 2000     # fire every 2s
$timer.AutoReset = $false  # do not enable the event again after its been fired
$timer.Enabled = $true

# register your event
Register-ObjectEvent -InputObject $timer -EventName Elapsed -SourceIdentifier Chatty -Action {Write-Host "Chatty"}

# view event subscriptions
get-eventsubscriber

# now start the timer
$timer.Start()

# go wild
$timer.AutoReset = $true

# help!!!!
$timer.AutoReset = $false

#
# Up-arrow on the console to $true to keep event firing, or to $false to stop the event.
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# Repeat at will :)
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# END PASTE BLOCK
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## let's drop this event
Unregister-Event Chatty
get-eventsubscriber