Pass an array contained in a variable to a scriptblock using ArgumentList

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Etzeitet Posted: 06-04-2010 8:07 PM

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1:

Invoke-Command -ScriptBlock { param([string]$item) $item } -ArgumentList "Hello"

Run the above and "Hello" will be displayed.

2:
$somestring = "Hello again!"
Invoke-Command -ScriptBlock { param([string]$item) $item } -ArgumentList ` $somestring

This displays "Hello again!" when run.

3:

Invoke-Command -ScriptBlock { param([array]$item) $item } -ArgumentList `
@("Hello", "World")

Displays only "Hello".  Oops!

4:
Invoke-Command -ScriptBlock { param([array]$item) $item } -ArgumentList `
@(,@("Hello", "World"))

Displays

"Hello
World"

See, we're getting somewhere.  Now, how would I pass an array as a variable?

Invoke-Command -ScriptBlock { param([array]$item) $item } -ArgumentList `
$anArray

That behaves the same was as example 3 - i.e. it only passes the first element in the array.  Example 4 forces to stay as an array [as opposed to splatting?].  How can I do the same when the array is contained in a variable?

I have tried various combinations and nothing seems to work.  So, as the title, how does one pass an array contained in a variable to a scriptblock using ArgumentList?

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Aleksandar replied on 06-05-2010 6:52 AM

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Have you tried:

Invoke-Command -ScriptBlock { param([array]$item) $item } -ArgumentList (,$anArray)

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Etzeitet replied on 06-05-2010 3:54 PM

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This did the trick!  Thank you.  One of the things I didn't try.

:)