Questions on using Runspace for multi-threading

hi,

i have been following tutorial here:

http://newsqlblog.com/2012/05/22/concurrency-in-powershell-multi-threading-with-runspaces/

it not clear me how add functionality fired on button click new thread. when user click button, want function fire , should run in it's own runspace not lock gui.

i have created 3 runspaces in tutorial. 

now, when user clicks button, need again create following:

$pipeline2  = [system.management.automation.powershell]::create()

$pipeline2.runspacepool = $pool

$pipeline2.addscript($scriptblockbuttonclick)

is required or else? each runspace, need create new variable $pipeline2, $pipeline3 etc ,

assign [system.management.automation.powershell]::create() it. how differentiate between

which runspace using, in case 1, 2 or 3?

thanks lot.

thanks. need clarification on of code on page please.

$synchash.textbox = $synchash.window.findname("textbox")
how line work? in xaml have:
<textbox x:name = "textbox" height = "400" width = "600"/>
is $synchash.textbox referring <textbox x:name ? if 
you if wanted add textfield , call different x:name:
<textbox x:name = "textbox2" height = "400" width = "600"/>
it's confusing because appears referring same object set itself? these different threads?
thanks!

the first line showing how connect textbox control name 'textbox' (this case sensitive) , stores control in hash table.

yes, if wanted add control, give unique name , load did first example.

this same thread, hash table holding of wpf controls easier handle them across different threads.

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