How do I determine if a PowerShell Cmdlet parameter value was specified?
c#, parameters, powershell, powershell-cmdlet
Solution
In this case, I would use a nullable wrapper around the enum type e.g.
[Parameter(Mandatory = false)]
public MyEnum? IsEnabled { get; set; }
Note the ? modifier on MyEnum. Then you can test if it is set like so:
if (this.IsEnabled.HasValue) { ... }
Problem
In PowerShell 1.0, if I have a cmdlet parameter of an enum type, what is the recommended method for testing whether the user specified that parameter on the cmdlet command line? For example: ``` MyEnum : int { No = 0, Yes = 1, MaybeSo = 2 } class DoSomethingCommand : PSCmdlet ... private MyEnum isEnabled; [Parameter(Mandatory = false)] public MyEnum IsEnabled { get { return isEnabled; } set { isEnabled = value; } } protected override void ProcessRecord() { // How do I know if the user passed -IsEnabled <value> to the cmdlet? } ``` Is there any way to do this without having to seed isEnabled with a dummy value? By default it will equal 0, and I don't want to have to seed every parameter or add a dummy value to my enum. I've potentially got many cmdlets with 100's of parameters, there's got to be a better way. This is related to this question but I was looking for a cleaner way of doing this. Thanks.