PowerShell tips for using optional mandatory parameters _powershell

In the script function below, you must use both optional and mandatory parameters.

The following shows that you must also use this mandatory parameter when an optional parameter appears.

function Connect-somewhere
{
 [cmdletbinding (defaultparametersetname= ' A ')]
 param
 (
 [ Parameter (parametersetname= ' A ', mandatory= $false)]
 [Parameter (parametersetname= ' B ', mandatory= $true)]
 $ ComputerName,
 [Parameter (parametersetname= ' B ', mandatory= $false)]
 $Credential
 )
 $chosen = $ Pscmdlet.parametersetname
 "You have chosen $chosen parameter set."
}
 
#-computername is optional
connect-somewhere
# Here,-computername is mandatory
connect-somewhere- Credential test

Supports all PS versions