Software Detection Script - Advice Appreciated.

Question

Hey guys, I am currently running a powershell script as a Configuration Item under SCCM 2012 but am looking to expand its functionality - this is where I am hoping someone can help...
My script at present is as follows:
param(
    ## The name of the software to search for
    $DisplayName = "*"
Set-StrictMode -Off
 $compliance = "true"
## Get all the listed software in the Uninstall key
$keys =    Get-ChildItem HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall
## Get all of the properties from those items
$items = $keys | Foreach-Object { Get-ItemProperty $_.PsPath }
## For each of those items, display the DisplayName and Publisher
foreach($item in $items)
 if (($item.displayname) -and ($item.displayname -like $displayname))
   ## write-host $item.displayname
  switch ($item.displayname)
     "7-Zip 9.20" {$dummy=1}
     "Adobe Flash Player 11 ActiveX" {$dummy=1}
    default {$compliance = "False";$result=$result + $item.displayname + "`n"}
## write-host "======================================"
  Write-Host $compliance "`n" $result
## write-host "why:" $result
So, basically it looks through all the programs under the "Uninstall" part of the the registry and compares it against those I detail in the script (I have much more listed but removed them to spare this post) - my question though is I want to
expand the script to "ignore" certain software (for example Video drivers) and this is where I could use some guidance.
Can anyone recommend an approach or a command to help me achieve this?
Thanks in advance.

Answer 1

It makes no sense and I am not going to try and figure out how you thought it up.
Here is how to find in something belongs to a collection.
$items=@(
     '-Zip 9.20',
     'Adobe Flash Player 11 ActiveX'
if($items -contains 'Adobe Flash Player 11 ActiveX'){'Found'}else{'not found'}
You can list as many things in the array as you need.  If one matches it will be found.  A switch is overkill in this case and your use is suspect.  The code you posted won't work and is hard to understand what you are trying to do.
Look in the repository for scripts that retrieve uninstall items from the registry.  They will likely have what you need.
¯\_(ツ)_/¯