.net - PowerShell generic collections

Question

I have been pushing into the .NET framework in PowerShell, and I have hit something that I don't understand. This works fine:

$foo = New-Object "System.Collections.Generic.Dictionary``2[System.String,System.String]"
$foo.Add("FOO", "BAR")
$foo

Key                                                         Value
---                                                         -----
FOO                                                         BAR

This however does not:

$bar = New-Object "System.Collections.Generic.SortedDictionary``2[System.String,System.String]"
New-Object : Cannot find type [System.Collections.Generic.SortedDictionary`2[System.String,System.String]]: make sure t
he assembly containing this type is loaded.
At line:1 char:18
+ $bar = New-Object <<<< "System.Collections.Generic.SortedDictionary``2[System.String,System.String]"

They are both in the same assembly, so what am I missing?

As was pointed out in the answers, this is pretty much only an issue with PowerShell v1.

Answer 1

In PowerShell 2.0 the new way to create a Dictionary is:

$object = New-Object 'system.collections.generic.dictionary[string,int]'