Capturing PowerShell output in C# after execution of each pipeline command

I am implementing a WPF application that executes a PowerShell script for each key/value pair given in a dictionary, using the pair as script arguments. I store each run of the script as a new command in the pipeline. However, this causes me to only get output back from the last command that was run, when I need the output after each run of the script. I have considered creating a new pipeline each time the script is executed, but I need to know when all executions of the script are done. Here's the relevant code to help explain my problem: ``` private void executePowerShellScript(String scriptText, Dictionary<String, String> args) { // Create the PowerShell object. PowerShell powerShell = PowerShell.Create(); // If arguments were given, add the script and its arguments. if (args != null) { foreach (KeyValuePair<String, String> arg in args) { powerShell.AddScript(scriptText); powerShell.AddArgument(arg.Key); powerShell.AddArgument(arg.Value); } } // Otherwise, just add the script. else powerShell.AddScript(scriptText); // Add the event handlers. PSDataCollection<PSObject> output = new PSDataCollection<PSObject>(); output.DataAdded += new EventHandler<DataAddedEventArgs>(Output_DataAdded); powerShell.InvocationStateChanged += new EventHandler<PSInvocationStateChangedEventArgs>(Powershell_InvocationStateChanged); // Invoke the pipeline asynchronously. IAsyncResult asyncResult = powerShell.BeginInvoke<PSObject, PSObject>(null, output); } private void Output_DataAdded(object sender, DataAddedEventArgs e) { PSDataCollection<PSObject> myp = (PSDataCollection<PSObject>)sender; Collection<PSObject> results = myp.ReadAll(); foreach (PSObject result in results) { Console.WriteLine(result.ToString()); } } ``` And then I use the following method to know when all executions of the script have been completed. Since I do this by checking that the invocation state of the pipeline is completed, I can't make a new pipeline for each execution of the script: ``` private void Powershell_InvocationStateChanged(object sender, PSInvocationStateChangedEventArgs e) { switch (e.InvocationStateInfo.State) { case PSInvocationState.Completed: ActiveCommand.OnCommandSucceeded(new EventArgs()); break; case PSInvocationState.Failed: OnErrorOccurred(new ErrorEventArgs((sender as PowerShell).Streams.Error.ReadAll())); break; } Console.WriteLine("PowerShell object state changed: state: {0}\n", e.InvocationStateInfo.State); } ``` So, to get to my question: 1) Can I force the pipeline to produce output after each command that it executes? Or, 2) If I were to create a new pipeline each time I run the command, is there another way that I could check that all executions of the script have been completed? There are few examples using the actual `PowerShell` class in C# and I know next to nothing about threading, so any help would be greatly appreciated.