PowerShell Remove the last error - powershell

Question

In my PowerShell script I try to do some error handling. However, I'm depending on an advanced function that uses the Try/Catch clauses. So once in a while the code block in the function fails and goes to the Catch clause after generating an error. At this point the variable $Error is filled with one error.
If I then consult within my script the variable $Error it tells me there's one record, which is correct. But I would like to know if it's possible to only delete the last error within the function in the Catch clause? So I can keep my $Error variable clear for the script errors.
The problem is within Get-ADTSProfileHC. I tried to delete the last error with $Error[0] | Remove-Item but it failed.
The function:
Function Get-ADusersHC {
[CmdletBinding(SupportsShouldProcess=$True)]
Param(
[Parameter(ValueFromPipelineByPropertyName=$true,ValueFromPipeline=$true,Position=0)]
[String[]] $OU
)
Begin {
Function Get-ADOUNameHC {
$CanonicalName = $_.CanonicalName
[System.Collections.ArrayList]$Pieces = $CanonicalName.split(“/”)
$Pieces.Remove($Pieces[-1])
$OU = $Pieces -join '\'
$OU -replace ($Pieces[0],$Pieces[0].ToUpper())
}
Function Get-ADManagerDisplayNameHC {
$m = Get-ADObject -Identity $_.manager -Properties displayName,cn
if($m.ObjectClass -eq "user") { $m.displayName } Else{ $m.cn }
}
Function Get-ADTSProfileHC {
[CmdletBinding()]
Param(
[Parameter(Mandatory=$true,Position=0)]
[String] $DistinguishedName,
[parameter(Mandatory=$true,Position=1)]
[ValidateNotNullOrEmpty()]
[ValidateSet('UserProfile','AllowLogon','HomeDirectory','HomeDrive')]
[String]$Property
)
Begin {
$User = [ADSI]"LDAP://$DistinguishedName"
}
Process {
Try {
Switch ($Property) {
'AllowLogon' {if ($($User.psbase.InvokeGet('allowLogon')) -eq '1'){$True}else{$False}}
'HomeDirectory' {$User.psbase.InvokeGet('TerminalServicesHomeDirectory')}
'HomeDrive' {$User.psbase.InvokeGet('TerminalServicesHomeDrive')}
'UserProfile' {$User.psbase.InvokeGet('TerminalServicesProfilePath')}
}
}
Catch {
# When we receive an error, it means the field has never been used before and is blank
# this is due to an error in the AD (same problem with the Quest CmdLet), AllowLogon is
# always 'TRUE' but we don't set it because we can't read it sometimes so we write 'blanks'
Write-Output $null
}
}
}
}
Process {
Foreach ($_ in $OU) {
Write-Verbose "Function Get-HCADusersNoManager > OU: $_"
Write-Verbose "Function Get-HCADusersNoManager > Manager field empty"
Get-ADUser -SearchBase $_ -Filter 'SAMAccountName -eq "shenn"' -Properties * |
#Get-ADUser -SearchBase $_ -Filter * -Properties * |
Foreach {
$Properties = ([Ordered] #{
"Creation date" = $_.whenCreated;
"Display name" = $_.displayName;
"CN name" = $_.name;
"Last name" = $_.sn;
"First name" = $_.givenName;
"Logon name" = $_.sAMAccountName;
"Manager" = if($_.manager){Get-ADManagerDisplayNameHC};
"Employee ID" = $_.EmployeeID;
"HeidelbergcCement Billing ID" = $_.extensionAttribute8
"Type of account" = $_.employeeType;
"OU" = Get-ADOUNameHC;
"Notes" = $_.info -replace "`n"," ";
"E-mail" = $_.EmailAddress;
"Logon script" = $_.scriptPath;
"TS User Profile" = Get-ADTSProfileHC $_.DistinguishedName 'UserProfile';
"TS Home directory" = Get-ADTSProfileHC $_.DistinguishedName 'HomeDirectory';
"TS Home drive" = Get-ADTSProfileHC $_.DistinguishedName 'HomeDrive';
"TS Allow logon" = Get-ADTSProfileHC $_.DistinguishedName 'AllowLogon'
})
$Object = New-Object -TypeName PSObject -Property $Properties
Write-Output $Object
}
}
}
}

Answer 1

Two easy ways to do this:
$error.Remove($error[0])
$Error.RemoveAt(0)
Don't forget to check there is an error first.

Answer 2

$Error.Remove($error[$Error.Count-1])
If errors variable is empty, you will not get any exception
I hope it helps