How to omit powershell parameter from cmdlet if value not provided?

Question

I\'m trying to execute a below Powershell command to create a new address list on exchange server with parameters like Name, Container, etc.

Container is an

Answer 1

Have a look at the documentation for the -Container parameter in New-AddressList: https://docs.microsoft.com/en-us/powershell/module/exchange/email-addresses-and-address-books/new-addresslist?view=exchange-ps#optional-parameters

Specifically:

If you don't use this parameter,the address list is created under the root (\).

...

Default value: None

$container = $null
New-AddressList -Container $container

# or...

$container = "\"
New-AddressList -Container $container

Answer 2

take a look at Get-Help *splatting to see a way to do this.

a bit more detail ... a "splat" is a hashtable of parameter = value pairs. once you have the basic always-there items in the splat, you can add others just as you would to any hashtable by $Param_Splat.Add(ParameterName, 'Value'). then when you call your cmdlet, you use Verb-Noun @Param_Splat. note the @ symbol instead of the usual $. [grin]

take care,
lee

Answer 3

You can pass needed parameters with their corresponding values via hashtable. Add If/Else conditions to include properties. Like so:

$Container  = '\test MyAddressList5'

$Parameters = @{}
$Parameters.Add('ConditionalStateOrProvince','maha')
$Parameters.Add('IncludedRecipients','MailboxUsers')
if($Container){$Parameters.Add('Container',$Container)}

New-AddressList @Parameters

Also, when you need to include Switch parameter just pass $True. Like so:

$Parameters.Add('SomeSwitchParameter',$True)