using powershell to change registry binary data

Question

I understand that with powershell it's possible to change registry values.

for example, here: http://poshcode.org/3504

we can set the properties like this:

Set-ItemProperty 'HKCU:\Software\Microsoft\Windows\Shell\Associations\UrlAssociations\ftp\UserChoice' -name ProgId IE.FTP

however, is it possible to set these binary values using powershell??

Answer 1

1. Read the value (a byte array)
2. Modify the array element
3. Write the byte array back to the registry key.

Here's an example:

$key = 'HKCU:\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections'

$data = (Get-ItemProperty -Path $key -Name DefaultConnectionSettings).DefaultConnectionSettings
$data[8] = 9
Set-ItemProperty -Path $key -Name DefaultConnectionSettings -Value $data