Powershell script to run when an event occurs in Windows event log

OnEventCustomTask.ps1

# To test this script you can use Powershell to write your own test error log entry in the following way:
# -------------------------------------
# New-EventLog –LogName Application –Source "Test"
# Write-EventLog –LogName Application –Source "Test" –EntryType Error –EventID 1 –Message "This is a test message."

# Name to filter the event uses wild card pattern matching
$a = "*LocalReport*Application*" 

#Write-EventLog –LogName Application -Source "Test" –EntryType Error –EventID 1046 –Message "This is a test message for $($a)."

$event = get-eventlog -LogName Application -newest 1

#write-host $event.Message

# "Error" - send only error 
if ($event.EntryType -eq "Error" -Or $event.EntryType -eq "Critical")
{
    If($event.Message -like "*$($a)*")
    {
	    $PCName = $env:COMPUTERNAME
        $EmailBody = $event | format-list -property * | out-string
        $EmailFrom = "$PCName <[email protected]>"
        $EmailTo = "[email protected]" 
        $EmailSubject = "Error in $($a) program"
        $SMTPServer = "relay2"
        Write-host "Sending Email"
        Send-MailMessage -From $EmailFrom -To $EmailTo -Subject $EmailSubject -body $EmailBody -SmtpServer $SMTPServer -Priority High
    }

    #Check status of all court alert services 
    Invoke-Expression $checkStatusScript
}
else
{
    write-host "No error found"
    write-host "Here is the log entry that was inspected:"
    $event
}