RunspacePool Class (System.Management.Automation.Runspaces)

using (RunspacePool rsp = RunspaceFactory.CreateRunspacePool())
{
  rsp.Open();
  
  // Create a PowerShell object to run the following command.
  //  get-process wmi*
  PowerShell gpc = PowerShell.Create();        
  // Specify the runspace to use and add commands.
  gpc.RunspacePool = rsp;
  gpc.AddCommand("Get-Process").AddArgument("wmi*");

  // Invoke the command asynchronously. 
  IAsyncResult gpcAsyncResult = gpc.BeginInvoke();
  // Get the results of running the command. 
  PSDataCollection<PSObject> gpcOutput = gpc.EndInvoke(gpcAsyncResult);

  // Process the output.
  Console.WriteLine("The output from running the command: get-process wmi*");
  for (int i= 0; i < gpcOutput.Count; i++)
  {
   Console.WriteLine(
                     "Process Name: {0} Process Id: {1}",
                     gpcOutput[i].Properties["ProcessName"].Value,
                     gpcOutput[i].Properties["Id"].Value);
  }