Powershell Filtering EventID with Where-Object

Question

i am trying to Filter out some EventIDs from Get-Event log like this :

...More code here
Get-EventLog -LogName $_ -EntryType Warning,Error | 
Where-Object {$_.EventID -ne '0|1|2|3|4|7|8|9|10|14|15|17...'}

However i am running into trouble with the comparator, using -ne simply does not Filter anything out, and if i use -notmatch, it returns only one result, and i have confirmed there are a lot that it's skipping. Not sure what i am missing and why it's -ne is not working at all, any help is appreciated! Thanks a lot in advance !

Answer 1

Your current code:

$_.EventID -ne '0|1|2|3|4|7|8|9|10|14|15|17...'

is currently checking if the ID is literally 0|1|2|3|4|7|8|9|10|14|15|17....

To check if the ID is one of the values specified, you need to use -in operator, as suggested in the comments:

$_.EventID -in @(0, 1, 2, 3)

For future reference, please check about_Comparison_Operators from PowerShell documentation.