Vista - Passing a string array as a parameter from one script to another

Dear Chums,

I have a script, scrpt1.ps1, in which I create a string array (string[])
named straryA.
I wish to pass this string array to a second script, scrpt2.ps1, as an input
parameter.

The trial attempt was as follows:
scrpt1.ps1:
invoke-expression ".\scrpt2.ps1 $straryA $par2"

scrpt2.ps1:
param($straryA2, $par2loc="", $errCatch="")

This fails: by inspection, it is clear that $straryA2 holds the first string
of $straryA, $par2loc holds the second string of $straryA and $errCatch
holds the third string of $straryA.

Any help with the correct syntax for passing a string array woulfd be
appreciated.

--
Regards,
Brillig.

Hi

These are my files:

test2.ps1
---------
param ($p1, $p2, $p3, $p4, $p5)
write-host "p1 = $p1"
write-host "p2 = $p2"
write-host "p3 = $p3"
write-host "p4 = $p4"
write-host "p5 = $p5"

test1.ps1
---------
$a = "a","b","c"
$b = "second"
..\test2.ps1 $a[0] $a[1] $a[2] $b

....which produces this:
PS U:\> .\test1
p1 = a
p2 = b
p3 = c
p4 = second
p5 =

....which is waht you want, but this test1.ps1
-------------------
$a = "a","b","c"
$b = "second"
..\test2.ps1 $a $b

produces this output
PS U:\> .\test1
p1 = a b c
p2 = second
p3 =
p4 =
p5 =

....which is not what you want, so the answer is either to pass the array
elements in individually because you can't pass all the array elements into
another script by specifying the array's name, or to separate the components
of the appropriate parameter in the second script.

Hope this helps

Jay

"Brillig" <Brillig@xxxxxx> wrote in message
news:ECAF53FC-9EDE-40B8-A3FA-61F11E05ADEE@xxxxxx

On Sep 26, 4:12 pm, Brillig <Bril...@xxxxxx> wrote:It looks to me like you get what you want if you call the script
directly, without using Invoke-Expression:

..\scrpt2.ps1 $straryA $par2

Is there a reason you are using Invoke-Expression?

You will also get what you want if you use single quotes instead of
double quotes.

Invoke-Expression '.\scrpt2.ps1 $straryA $par2'

Remember, variables within double quotes are replaced with their
values before being passed on to a command; in your case, Invoke-
Expression.

Jeff

You can also pass the array and use multiple assignments in scrpt2.ps1:

# scrpt1.ps1 #
[string[]]$straryA = $args[0..2]
$straryA
# scrpt1.ps1 #

# scrpt2.ps1 #
param([string[]]$straryA2)
$straryA2, $par2loc, $errCatch = $straryA2
"`$straryA2 = $straryA2"
"`$par2loc = $par2loc"
"`$errCatch = $errCatch"
# scrpt2.ps1 #
$straryA2 = one
$par2loc = two
$errCatch = three

# ...or:
$straryA2 = one
$par2loc = two
$errCatch = three

--
Kiron

On Sep 26, 5:12 am, Brillig <Bril...@xxxxxx> wrote:The variables are being expanded inside the double quoted string; use
single quotes, or escape the dollar signs:

-- begin s1.ps1 --

$arr = @(1,2,3)
$p = "test param"

invoke-expression ".\s2.ps1 `$arr `$p" # escaped dollar

# invoke-expression '.\s2.ps1 $arr $p' # single quotes

-- end s1.ps1

....and the receiving script:

-- begin s2.ps1 --

param([array]$arr, [string]$p)

"`$arr is a {0} with length {1}" -f $arr.gettype(), $arr.length

"`$p is a {0} with length {1} and value '{2}'" -f $p.gettype(),
$p.length, $p

-- end s2.ps1

Results:

PS> .\s1.ps1
$arr is a System.Object[] with length 3
$p is a System.String with length 10 and value 'test param'

Hope this helps,

- Oisin

Dear Jeff,

Having a "Duh" moment. Thanks a lot to you and the other correspondents for
you valuable help.

--
Regards,
Brillig.


"Jeff" wrote: