private static void IsVMStateChanged(object status)
        {
        
            object[] parms = (object[])status;
            string machineId = (string)parms[0];
            VM vm = ShareFactory.GetVMByID(new Guid(machineId));
            if (vm.StatusString.Equals("Creating..."))
            {

                System.Threading.Thread.Sleep(1000);
                Thread threadWithParam = new Thread(new ParameterizedThreadStart(IsVMStateChanged));
                threadWithParam.Start(new object[] { machineId});
            }
            else if (vm.StatusString.Equals("Running"))
            {
              //do something

            }                        
        }

Call Method:

   IsVMStateChanged(new object[] { machineId});