If you need to limit a function parameter to only a set of allowed choices, you should use the next example:
function Get–24hEventLogEntries {
param(
[String]
[ValidateSet('System','Application')]
$LogName='System',
param(
[String]
[ValidateSet('System','Application')]
$LogName='System',
[String]
[ValidateSet('Error','Warning','Information')]
$EntryType='Error'
)
Get-EventLog -LogName $LogName -EntryType $EntryType -After ((Get-Date).AddDays(–1))
}
You can use Get-24hEventLogEntries to retrieve events written in the past 24 hours. The user can choose to see the 'system' or the 'application' log. EntryType is limited to 'Error,' 'Warning,' or 'Information.'
