internal class Program
    {
        static void Main(string[] args)
        {
            invokeCommand("powershell ls");
            invokeCommand("Get-Date");
        }
        static void invokeCommand(string command)
        {
            Runspace runspace = RunspaceFactory.CreateRunspace();
            runspace.Open();
            RunspaceState state = runspace.RunspaceStateInfo.State;
            Console.WriteLine("Runspace State = " + state);

            Pipeline pipeline = runspace.CreatePipeline();
            pipeline.Commands.AddScript(command);
            Collection<PSObject> results = pipeline.Invoke();

            runspace.Close();
            //List<PSObject> results = pipeline.Invoke().ToArray().ToList();
            StringBuilder stringBuilder = new StringBuilder();
            foreach (PSObject obj in results) { stringBuilder.AppendLine(obj.ToString()); }
            String output = stringBuilder.ToString();
            Console.WriteLine(output);
            Console.WriteLine("Ende");
        }

    }