How can I pass a PowerShell function to a .NET method that takes a Func<T1, T2>?

Question

I need to create a .NET object in PowerShell. The signature for the constructor is:

public ObjCTor(TClient param1, Func<TClient, IInterface> param2)

and the class is defined as:

public class ObjCTor<TClient> : IOtherInt1, IOtherInt2 where TClient : ConcreteBase

The first parameter is easy enough. I'm stumped on the second. How can I pass a PowerShell function as Func<T1, T2> ?

UPDATED

Answer 1

The syntax supplied by Jason wasn't quiet correct. This works:

$= New-Object "ObjCTor[TClient]" -ArgumentList $param1,$functionToCall

I was also missing the $args[0] as a parameter in my scriptblock/delegate. This is what I should've had:

$functionToCall = { Get-Blah $args[0] }

Answer 2

PowerShell can convert a ScriptBlock to a delegate, so something like this might work fine:

$sb = { param($t1) $t1 }
New-Object "ObjCTor[CClient, Func[CClient,IInterface]]" -ArgumentList $param1,$sb

Note that PowerShell cannot deduce generic type arguments from a ScriptBlock. In your case, ObjCTor looks like a generic class so type deduction isn't a factor, but if you were calling a generic method, things could get messy.