How to programatically determine what PowerShell snapin are installed

Question

Hi, I would like to know if their is a method which I can call which can tell me if a PowerShell snapin is installed.

I know I could call probably do it, say via WMI or write a PowerShell script and return a list to C#, but is their not a method do it somewhere.

Thanks.

Answer 1

I'm not sure if this is the optimal way to do it but take a look at the default runspace configuration e.g.:

using System.Linq;
using System.Management.Automation;
using System.Management.Automation.Runspaces;

var cmdlets = Runspace.DefaultRunspace.RunspaceConfiguration.Cmdlets;
var snapins = (from cmdlet in cmdlets
              select new { cmdlet.PSSnapin.Name }).Distinct();

Compiled by hand so YMMV.

To see which snapins are installed, instead of loaded, enumerate the contents of this registry key:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\PowerShell\1\PowerShellSnapIns

Or you could invoke Get-PSSnapin -Registered from the C# code and process the PSSnapInInfo objects that are returned.