Cannot index into a null array

hi there,

i getting cannot index null array error. run script below.

******************************************************
function check-even ($num) {[bool]!($num%2)}

foreach ($file in (get-childitem -path c:\users\rsimmers\desktop\*.ini)) {
    "processing file {0}" -f $file
    $newfilename = $file.fullname -replace ".ini", ".txt"
    $newcontent = foreach ($line in (get-content $file.fullname)){
        $printer = $line -match '\| (.*?)"'
        $printername = $matches[1]
        $printernum = $printername.split("-")[2]   

        if((check-even $printernum) -eq $true) {
            #even
            $line.replace('host="acfile01"','host="vjjjrt02"').replace('host="effile01"','host="vjjjrt02"')
        }
        else {
            #odd
            $line.replace('host="acfile01"','host="vshhprt01"').replace('host="acfile01"','host="vshhprt01"')
        }
    }
}

$newcontent
$newcontent | out-file $newfilename

******************************************************************

processing file \\vfs04\users$\kaendm\desktop\test00e8e627f9c.ini
cannot index null array.
@ c:\powershell\treplaceinivalues.ps1:12 char:9
+ $printername = $matches[1]
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~
+ categoryinfo : invalidoperation: (:) [], runtimeexception
+ fullyqualifiederrorid : nullarray

you cannot call method on null-valued expression.
@ c:\powershell\treplaceinivalues.ps1:13 char:9
+ $printernum = $printername.split("-")[2]
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ categoryinfo : invalidoperation: (:) [], runtimeexception
+ fullyqualifiederrorid : invokemethodonnull

hi zomba,

please refer script:

foreach ($file in (get-childitem -path d:\*.ini)) { 	$i=0 	"processing file {0}" -f $file 	$newfilename = $file.fullname -replace ".ini", ".txt" 	$content  = get-content $file.fullname 	foreach ($line in $content){ 	#if no match, skip	         if ($line -match '\| (.*?)"') { 		             write-verbose ($matches | out-string) -verbose 			$printername = $matches[1] 			$printernum = $printername.split("-")[2]     			write-host "the original line $line" 			write-host "-------------------------------" 			if((check-even $printernum) -eq $true) { 				#even 				$content[$i] = $content[$i].replace('host="acfile01"','host="vjjjrt02"').replace('host="effile01"','host="vjjjrt02"')     			}  			else {  				#odd 				$content[$i] = $content[$i].replace('host="acfile01"','host="vshhprt01"').replace('host="acfile01"','host="vshhprt01"') 			} 		} 			$i++ 	} 			$content|out-file $newfilename		  } 

if there else regarding issue, please feel free post back.

best regards,

anna wang

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