Stuck on where to add export-csv function - powershell

Question

Good day,
I have the following script below which i am using to get a specific value from a remote pc within the company network.
I am stuck on where I would add the export-csv function so that i can export all the data into a csv file.
any help would be appreciated.
$computers = Get-Content "c:\temp\Servers.txt"
$key = 'SOFTWARE\Fortinet\FortiClient\Sslvpn\Tunnels\RCL SSL VPN'
$valuename = 'Server'
$computers = Get-Content Servers.txt
foreach ($computer in $computers) {
$reg = [Microsoft.Win32.RegistryKey]::OpenRemoteBaseKey('LocalMachine', $computer)
$MachineName = $computer
$regkey = $reg.opensubkey($key)
Write-host $MachineName "," $regkey.getvalue($valuename) `r`n
}

Answer 1

You could use PsCustomObject and then add to it with each loop
$computers = Get-Content "c:\temp\Servers.txt"
$objarray = #()
$key = 'SOFTWARE\Fortinet\FortiClient\Sslvpn\Tunnels\RCL SSL VPN'
$valuename = 'Server'
$computers = Get-Content Servers.txt
foreach ($computer in $computers) {
$reg = [Microsoft.Win32.RegistryKey]::OpenRemoteBaseKey('LocalMachine', $computer)
$MachineName = $computer
$regkey = $reg.opensubkey($key)
Write-host $MachineName "," $regkey.getvalue($valuename) `r`n
$objArray += [PSCustomObject]#{
'MachineName' = $computer
'RegKey' = $RegKey
}
}
$objarray | export-csv c:\export.csv

Answer 2

Output objects inside the loop and pipe these through at the very end to the Export-Csv cmdlet like this:
$computers = Get-Content "c:\temp\Servers.txt"
$key = 'SOFTWARE\Fortinet\FortiClient\Sslvpn\Tunnels\RCL SSL VPN'
$valuename = 'Server'
$computers = Get-Content Servers.txt
$result = foreach ($computer in $computers) {
# do this in a Try{..] Catch {..} construct
try {
$regBase = [Microsoft.Win32.RegistryKey]::OpenRemoteBaseKey('LocalMachine', $computer)
$regkey = $regBase.OpenSubKey($key)
# output an object with the properties you want
[PsCustomObject]#{'MachineName' = $computer; RegistryValue = $regkey.GetValue($valuename) }
}
catch {
Write-Warning "Could not open registry on server '$computer'"
# output an object with the error
[PsCustomObject]#{'MachineName' = $computer; RegistryValue = "Error opening registry.." }
}
# for good measure, Close the opened registry
finally {
if ($regkey) { $regkey.Close() }
if ($regBase) { $regBase.Close() }
}
}
# output on screen
$result | Format-Table -AutoSize
#output to CSV file
$result | Export-Csv -Path 'c:\temp\ServerRegistryValues.csv' -NoTypeInformation