using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace Fietsclient { public class AppGlobal { private static AppGlobal _instance; public static AppGlobal Instance { get { return _instance ?? (_instance = new AppGlobal()); } } private KettlerBikeComm _bikeComm; private AppGlobal() { } public void startComPort() { startComPort("COM5"); } public void startComPort(string portname) { _bikeComm = new KettlerBikeComm(portname); _bikeComm.initComm(); } } }