Error Handling Issue with Get-ADComputer in a foreach loop - powershell

Question

I am running into an error handling issue and have tried a lot of different attempts without much luck. I have a data set and am trying to compare it against AD. A machine may exist in the data set, but not in AD. I would like to retain that information in my end array, but am running into a terminating error:
Microsoft.ActiveDirectory.Management.ADIdentityNotFoundException
$data = Import-Csv -Path .\data.csv
$cdata = #()
foreach ($data in $data) {
foreach ($addata in (Get-ADComputer -Identity $data.Name -Properties LastLogonDate | Select-Object LastLogonDate)) {
$combine = #{
"Name" = $data.Name
"LastPolicyRequest" = $data.LastPolicyRequest
"LastLogonDate" = $addata.LastLogonDate
}
$cdata += New-Object psobject -Property $combine
}
}

Answer 1

Get-ADComputer (and other AD cmdlets) throw this exception when you try to get an object by identity that doesn't exist. Use the -Filter parameter to avoid this issue. Also, don't use the same variable for item and set ($data in $data).
$csv = Import-Csv -Path '.\data.csv'
foreach ($data in $csv) {
$name = $data.Name
foreach ($addata in (Get-ADComputer -Filter "SamAccountName -eq '$name'" -Properties LastLogonDate | Select-Object LastLogonDate)) {
...
}
}
If you just want to add the last logon date to those records that are present in AD you could do something like this:
$cdata = Import-Csv -Path '.\data.csv' |
Select-Object Name, LastPolicyRequest, #{n='LastLogon';e={
Get-ADComputer -Filter "SamAccountName -eq '$($_.Name)'" -Properties LastLogonDate |
Select-Object -Expand LastLogonDate
}}