C#

string path = Application.StartupPath;
private void button3_Click(object sender, EventArgs e)
        {
            string MSWordPath = "\"c:\\Program Files (x86)\\Microsoft Office\\Office14\\WINWORD.EXE\"";
            selectedFile = path + "\\" + listBox1.SelectedItem as string;
          //Process.Start("WINWORD.EXE", selectedFile);  -or this but the same problem
            Process.Start(MSWordPath, selectedFile);
        }

<Foo> service on <machine> started and then stopped. Some services stop automagically if they are not in use by other services or programs.

public partial class LoggingWinService : ServiceBase
    {
        public ServiceHost host = null;
        public LoggingWinService()
        {
            ServiceName = "LoggingServiceSample";
            InitializeComponent();
        }
        public static void Main()
        {
            ServiceBase.Run(new LoggingWinService());
        }
        protected override void OnStart(string[] args)
        {
            if (host != null)
            {
                host.Close();
            }
            host = new ServiceHost(typeof(LoggingWCFService));
            host.Open();
        }

        protected override void OnStop()
        {
            if (host != null)
            {
                host.Close();
                host = null;
            }
        }
    }