Access SessionStateProxy of child scope

Question

After running powershell.AddScript("code", true); how do I get access to the session (SessionStateProxy) of the child scope that was created?

Answer 1

The SessionStateProxy property belongs to the runspace hosting the execution context:

// API will automatically create a default runspace when you don't explicitly pass one to PowerShell.Create()
using (PowerShell ps = PowerShell.Create())
{
  ps.Runspace.SessionStateProxy.SetVariable("targetPath", @"C:\some\path");
  // side-effect from `Set-Location` called from child scope is the same as when run in calling scope
  ps.AddScript(@"Set-Location -LiteralPath $targetPath", true);
  ps.AddStatement();
  // location change still persists in parent scope
  ps.AddScript(@"$PWD.Path");

  foreach(var outputItem in ps.Invoke())
    Console.WriteLine(outputItem.BaseObject);
}

The above will print C:\some\path (assuming that that directory exists).