Export Registry specific keys to CSV

Question

I am trying to export 2 specific registry key (REG_SZ) to export through powershell.

Path to the registry: Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Intel\PSIS\PSIS_DECODER

Inside the above key, I have many keys, but I want to export specifically 2 keys to CSV and save it. I want the output CSV as below

Name	Value
Key 1	Value 1
Key 2	Value 2

$FindRegPath = HKLM:\SOFTWARE\Intel\PSIS\PSIS_DECODER

$Value1 = Get-ItemPropertyValue -Path $FindRegPath -Name "Key 1"

$Value2 = Get-ItemPropertyValue -Path $FindRegPath -Name "Key 2"

# Create CSV File with header

$outfile = "C:\temp\Outfile.csv"

$newcsv = {} | Select "Name","Value" | Export-Csv $outfile

How can I pass the Key and Value under the Name and Value inside the CSV?

Answer 1

There are 2 easy ways you can use to export the values, one is using Get-Item to get the RegistryKey instance and then use GetValue() to get the property values:

$FindRegPath = 'HKLM:\SOFTWARE\Intel\PSIS\PSIS_DECODER'
$key = Get-Item $FindRegPath
# complete with the actual names here
$keys = 'Key 1', 'Key 2'
$keys | ForEach-Object {
    [pscustomobject]@{
        Name  = $_
        Value = $key.GetValue($_)
    }
} | Export-Csv $outfile

The second way is very similar except you use Get-ItemProperty and then get the values via dot notation:

$FindRegPath = 'HKLM:\SOFTWARE\Intel\PSIS\PSIS_DECODER'
$key = Get-ItemProperty $FindRegPath
# complete with the actual names here
$keys = 'Key 1', 'Key 2'
$keys | ForEach-Object {
    [pscustomobject]@{
        Name  = $_
        Value = $key.$_
    }
} | Export-Csv $outfile

In both examples you need to consider that if the value is a byte array (byte[]), you will need to manipulate it in order for it to be properly displayed in your CSV. For example, you could join the bytes with a delimiter:

...
...
$keys | ForEach-Object {
    [pscustomobject]@{
        Name  = $_
        Value = $key.GetValue($_) -join ',' # join the bytes with a comma
    }
} | Export-Csv $outfile