ConvertTo-XML doesn't display as expected - powershell

Question

In a foreach loop, I am trying to gather information about a number of objects, and concatenate them all in one XML file.
foreach($Task in $Tasks) {
$OutputObj = New-Object -TypeName PSobject
$OutputObj | Add-Member -MemberType NoteProperty -Name ComputerName -Value $Computer
# does not work, $s contains '#document'
$s = ConvertTo-XML -InputObject $OutputObj
Write-Host $s
# works as expected
$OutputObj | Export-CliXML $OutPath
}
What am I doing wrong with ConvertTo-XML? How can I get it to produce the output that Export-CliXML? To be clear, I want to convert each $outputobj and append it to the output file.

Answer 1

Try this:
($Tasks | ForEach-Object {
$OutputObj = New-Object -TypeName PSObject
$OutputObj | Add-Member -MemberType NoteProperty -Name ComputerName -Value $Computer
Write-Output $OutputObj
} | ConvertTo-XML -NoTypeInformation).Save($OutPath)
or this:
$combined = #()
foreach($Task in $Tasks) {
$OutputObj = New-Object -TypeName PSobject
$OutputObj | Add-Member -MemberType NoteProperty -Name ComputerName -Value $Computer
$combined += $OutputObj
}
$combined | Export-CliXML $OutPath
What a result do you want to see?
To learn more about ConvertTo-XML read the article "Dress Up Your XML Output with the ConvertTo-XML Cmdlet" http://technet.microsoft.com/en-us/library/ff730921.aspx

Answer 2

Instead of
$s = ConvertTo-XML -InputObject $OutputObj
Try
$s = $OutputObj | ConvertTo-XML
I have the same problem with ConvertTo-CSV. The -InputObject parameter is not working as I expect. But piping the object(s) to the ConvertTo-CSV works as expected.