How to stop get-eventlog command if it finds a hit in the date range... w/o scanning the whole thing first :-/

Question

Hi All, 
I have a nice little PowerShell function that is scrubbing the eventlog for a 'positive' hit under a certain error code for each user in a defined window. 
basically we are looking to see if they are still logging into OCS...
Since it takes what seems like an eternity to scan the whole security log per the 'get-eventlog' statement and then evaluate it it is $true or not... i would like it to break out as soon as it finds one hit without going all the way back x days unless it
has to.
have been trying to use this for testing... with no avail
if (Get-EventLog -LogName Security -ComputerName myOCSserver -after $date -InstanceId 540 -UserName "domain\myuser") {
Write-Host -ForegroundColor Green "UserName found!... Check Passed"
}Else {
Write-Host -ForegroundColor Cyan "UserName not found... delete this account"
if i run the command it will start writing each hit to the screen... i just need it to stop scanning if it finds one but not sure how to break out and now do an action since it is $true... (or $false) :)
Thanks in advance!!!

Answer 1

I'm not sure i'm understanding this correctly but i'm assuming you only care if one shows up in there at all. If so this might speed things up depending on where in the log the first entry is.
Get-EventLog -LogName
Security -ComputerName myOCSserver
-after $date -InstanceId
540 -UserName "domain\myuser" | select -first 1