Powershell Issue Comparing Array Variables

FiyaFly

I'm finding this kind of hard to explain, so I will try to make it simple using direct outputs from powershell:
The definitions of my variables

PS Admin>$logError
 2/14/2017  3:21:55 1211577 Response Timeout UniqueID 37 10  02  01  D9  00  EC Socket 0 SockId 0 FailureCount 2 of 3
PS Admin>$element

                                                                                                               UNIQUEID
                                                                                                               --------
                                                                                                                     37
PS Admin>$element.UNIQUEID
37

So, I try to do this:

PS Admin>$logError -contains $element
False

Which really confuses me, but I think the issue lies in the way I'm pulling data into these and attempting to compare an array to a string.:

PS Admin>write-host($logError)
 2/14/2017  3:21:55 1211577 Response Timeout UniqueID 37 10  02  01  D9  00  EC Socket 0 SockId 0 FailureCount 2 of 3
PS Admin>write-output($logError)

 2/14/2017  3:21:55 1211577 Response Timeout UniqueID 37 10  02  01  D9  00  EC Socket 0 SockId 0 FailureCount 2 of 3


PS Admin>write-host($element)
System.Data.DataRow
PS Admin>write-output($element)

                                                                                                               UNIQUEID
                                                                                                               --------
                                                                                                                     37

I can give more information if needed, but my main focus is this- how do I compare the 37 to the $logError instead of it comparing the System.Data.Datarow to $logError?

Mike Davis

What happens if you do:
$IsThereAnError = $logError.Contains($element)
$IsThereAnError

$logError might have to be converted to a string

Mike Davis

If that doesn't work, try:

$IsThereAnError = ($logError -as [string]).Contains($element)
$IsThereAnError

FiyaFly

PS Admin>$IsThereAnError = $logError.Contains($element)

Method invocation failed because [Microsoft.PowerShell.Commands.MatchInfo] doesn't contain a method named 'Contains'.
At line:1 char:37

$IsThereAnError = $logError.Contains <<<< ($element)
- CategoryInfo : InvalidOperation: (Contains:String) [], RuntimeException
- FullyQualifiedErrorId : MethodNotFound

PS Admin>$IsThereAnError = $logError -Contains($element)
PS Admin>$IsThereAnError
False

had to switch the . to a -. Something also to note is this:

PS Admin>$PSVersionTable

Name                           Value
----                           -----
CLRVersion                     2.0.50727.5485
BuildVersion                   6.1.7601.17514
PSVersion                      2.0
WSManStackVersion              2.0
PSCompatibleVersions           {1.0, 2.0}
SerializationVersion           1.1.0.1
PSRemotingProtocolVersion      2.1

Keep talking to management about getting some maintenance time to get this server upgraded.

I do believe $logError is a string, but I was thinking I should still be able to compare the variable in the element array to it?

FiyaFly

PS Admin>$IsThereAnError = ($logError -as [string]).Contains($element)
PS Admin>$IsThereAnError
False

Mike Davis

scrolled back and took a better look. Try:

$IsThereAnError = ($logError -as [string]).Contains($element.UNIQUEID)
$IsThereAnError

FiyaFly

AH. May be getting at least somewhere:

PS Admin>($logError -as [string]).contains($element.UNIQUEID -as [string])
True

I can at least get something to work with this, however is there a better way? I am pretty sure they are both arrays, and am looking for how to check that for sure right now

FiyaFly

PS Admin>$element.gettype()

IsPublic IsSerial Name                                     BaseType
-------- -------- ----                                     --------
True     False    DataRow                                  System.Object


PS Admin>$logError.gettype()

IsPublic IsSerial Name                                     BaseType
-------- -------- ----                                     --------
True     False    MatchInfo                                System.Object

FiyaFly

Yep. Core issue was the handling of those two data types. After setting the data types as strings on any compare or entry, works perfectly.
Thanks!

Obsolesce

PowerShell tag?

FiyaFly

@Tim_G Nice catch. Tagged. Thanks!