private void mnuLoad_Click(object sender, RoutedEventArgs e)
        {
            string filename = FileDialog.GetOpenFilename("Load Project...", "ws", "Wireless Simulator File");

            if (filename != null)
            {
                // Try to load it
                try
                {
                    WirelessNetwork wn = LoadNetwork(filename);

                    StopSimulation();
                    SetupWirelessNetwork(wn);
                    SetAutoload(filename);
                }
                catch (Exception ex)
                {
                    MessageBox.Show("Exception while trying to Load file.\n" + ex.ToString());
                }
            }
        }
        private void mnuSave_Click(object sender, RoutedEventArgs e)
        {
            string filename = FileDialog.GetSaveFilename("Save Project...", "ws", "Wireless Simulator File");

            if (filename != null)
            {
                // Save current network to file.
                try
                {
                    FileStream fs = File.OpenWrite(filename);

                    XmlSerializer xs = new XmlSerializer(typeof(WirelessNetwork));
                    xs.Serialize(fs, Network);

                    fs.Close();
                    SetAutoload(filename);
                }
                catch (Exception ex)
                {
                    MessageBox.Show("Exception while trying to save file.\n" + ex.ToString());
                }
            }
        }