Powershell | Combining multiple Arrays and compare them to a table - arrays

Question

I have encountered a new problem and I don't even know where exactly to start explaining. I will try my best, if something is unclear just ask me please.
I have an Excel workbook with informations (multiple rows) about DNS records - pretty similar to the powershell DNS syntax. e.g:
HostName RecordType TimeStamp TimeToLive RecordData
# A 0 00:05:00 127.0.0.1
I read them as arrays with the following little code - not very fast, but it works!:
#Read Excel
$row = [int]2
do {
if ($Sheet4.Cells.Item($Row,1).Text) {$ZoneName += $Sheet4.Cells.Item($Row,1).Text}
$HostName += $Sheet4.Cells.Item($Row,2).Text
$RecordType += $Sheet4.Cells.Item($Row,3).Text
$TimeStamp += $Sheet4.Cells.Item($Row,4).Text
$TimeToLive += $Sheet4.Cells.Item($Row,5).Text
$RecordData += $Sheet4.Cells.Item($Row,6).Text
$row = $row + [int] 1
} until (!$Sheet4.Cless.Item($row,2))
Now I have 6 arrays all stuck with information in different arrays, but all with the same amount of lines.
And now the tricky (atleast for me!) part:
I would like to stuff those 6 arrays into some special array I do not know, or in some sort of table I do not know how to create.
Why?
Because I want to compare those lines to this code ($Records to be specific):
$ZoneNames = (Get-DnsServerZone -ComputerName $DnsServer).zonename
$ZoneNames | foreach {$Records = (Get-DnsServerResourceRecord -ComputerName $DnsServer -ZoneName $_)}
$Records[0] would show me this (e.g.):
HostName RecordType Timestamp TimeToLive RecordData
-------- ---------- --------- ---------- ----------
# A 0 00:05:00 127.0.0.1
BUT: If I go deeper: $Records[0].RecordData:
IPv4Address PSComputerName
----------- --------------
127.0.0.1
So I would need to recreate this (above) sort of hierarchy to compare them (If I am right?).
I have tried it with a table like this (didn't work):
#Create Table object
$table = New-Object system.Data.DataTable “$ExcelRecords”
#Define Columns
$col2 = New-Object system.Data.DataColumn HostName,([string])
$col3 = New-Object system.Data.DataColumn RecordType,([string])
$col4 = New-Object system.Data.DataColumn TimeStamp,([string])
$col5 = New-Object system.Data.DataColumn TimeToLive,([string])
$col6 = New-Object system.Data.DataColumn RecordData,([string])
#Add the Columns
$table.columns.add($col2)
$table.columns.add($col3)
$table.columns.add($col4)
$table.columns.add($col5)
$table.columns.add($col6)
#Create a row
$r = $table.NewRow()
#Enter data in the row
$r.HostName = $HostName[$counter]
$r.RecordType = $RecordType[$counter]
$r.TimeStamp = $TimeStamp[$counter]
$r.TimeToLive = $TimeToLive[$counter]
$r.RecordData = $RecordData[$counter]
$RecordData
#Add the row to the table
$table.Rows.Add($r)
Tried comparing like this (didn't work):
if ($records[0] -like $table[0]) {write-host "works"}
This did work:
if ($records[0].hostname -like $table[0].hostname) {write-host "works"}
works
This did not (I guess this is the root of my problems):
if ($Records[0].RecordData -like $table[0].RecordData) {write-host "works"}
My main objective:
Check if there are Records on the DNS-Server, which aren't stated in the Excel sheet and delete them from the DNS-Server!
If you read through all the text, thanks for doing that! Appreciate every help.
Thanks in advance!

Answer 1

I'd start by creating an array of PS objects from your spreadsheet data.
#Read Excel
$row = [int]2
$DNS_Records =
do {
if ($Sheet4.Cells.Item($Row,1).Text) {
New-Object PSObject -Property #{
ZoneName = $Sheet4.Cells.Item($Row,1).Text
HostName = $Sheet4.Cells.Item($Row,2).Text
RecordType = $Sheet4.Cells.Item($Row,3).Text
TimeStamp = $Sheet4.Cells.Item($Row,4).Text
TimeToLive = $Sheet4.Cells.Item($Row,5).Text
RecordData = $Sheet4.Cells.Item($Row,6).Text
}
}
} until (!$Sheet4.Cless.Item($row,2))