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I'm wondering if it's possible to get a System.Management.Automation.PowerShell object from within a PowerShell console host, or Integrated Scripting Editor (ISE). I know that you can access the Runspace object by calling $Host.Runspace, but I need direct access to a PowerShell object (if it exists).

Would the only option be to create a new PowerShell object, and then call the code inside of that, or is there a way to access a pre-created PowerShell object using the $Host variable (or similar)?

http://msdn.microsoft.com/en-us/library/system.management.automation.powershell_members(v=vs.85).aspx

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  • May I inquire what you intend to do with the PowerShell instance? Commented Mar 6, 2014 at 1:38
  • I need to inspect the PSDataStreams property on it. Commented Mar 6, 2014 at 1:43

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Based on this ScriptLogger blog post by Oisin that uses PSDataStreams, I would say no. You need to create a PowerShell object [powershell]::create() and execute your script with the resulting object. Then, when you tap into the PSDataStreams collection, it will contain the various output from the executed script.

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If you goal is async execution, you probably want Powershell jobs.
Look into "start-job" and "invoke-command -asJob" if your goal is to spawn new shells/threads and execute code in them, then return data from that execution. Those commands will generate a runspace- you can return data from them if you simply invoke a variable at the end of their scriptblock, then use:

$Var = get-job|receive-job

Powershell will handle runspace management brilliantly with minimal work- if you are managing runspaces manually, you are probably doing something the hard way. Note that Invoke-command will allow you to execute these jobs on a remote machine- hugely powerful and efficient given the minimal amount of code you'll have to write to do it.

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