问题
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 optional input/parameter, how do I omit it from cmdlet if its value is not provided?
I tried with IF conditionals but but does not seems working. Any help here?
New-AddressList -Name -Container \test MyAddressList5 -ConditionalStateOrProvince maha -IncludedRecipients MailboxUsers
回答1:
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)
回答2:
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
回答3:
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
来源：https://stackoverflow.com/questions/52586848/how-to-omit-powershell-parameter-from-cmdlet-if-value-not-provided