Author Posts

November 10, 2014 at 6:10 pm


i need to unzip a file and copy to different location...

sometimes its working under the local files but when i give shared location it doesnt...

please help me on this



$files = Get-ChildItem $spath -include test*.zip -Recurse
foreach ($file in $files)


$archiveFile = $spath + $file.Name | out-string -stream

"Extracting the zip file to below location: " + $archiveFile
"Destination location : " + $destination
#$ErrorActionPreference = "SilentlyContinue"
$shellApplication = new-object -com shell.application
$zipPackage = $shellApplication.NameSpace($archiveFile)
$destinationFolder = $shellApplication.NameSpace($destination)

it throws the following error

You cannot call a method on a null-valued expression.
At L:\unzip.ps1:24 char:50
+ $destinationFolder.CopyHere($zipPackage.Items <<<< ()) + CategoryInfo : InvalidOperation: (Items:String) [], RuntimeException + FullyQualifiedErrorId : InvokeMethodOnNull Thanks in advance

November 11, 2014 at 7:29 am

When you get that error, what's in your $archiveFile variable? One potential problem that stands out here is this:

$files = Get-ChildItem $spath -include test*.zip -Recurse

foreach ($file in $files) 
    $archiveFile = $spath + $file.Name | out-string -stream

You're using the -Recurse switch for Get-ChildItem, which means that you could potentially be finding files such as "$spath\SubFolder\". However, when you set up your $archiveFile variable, it would just contain "$spath\", which probably wouldn't exist. Instead, you can just say $archiveFile = $file.FullName , which will automatically have the full path to the file and avoid such problems. I don't know if that's what's causing your current failure, though; you'd have to test and see.

November 11, 2014 at 8:58 am

Thanks Dave...its working now