Can I call windows form method in windows service class

Form1 frm = new ScheduleService.Form1();
        public Service1()
        {
            InitializeComponent();
        }
        Process p = new Process();
        protected override void OnStart(string[] args)
        {
            WriteToFile("Service is started at " + DateTime.Now);//used for just checking
            time.Elapsed += new ElapsedEventHandler(OnElapsedTime);
            time.Interval = 8000;
            time.Start();
            time.Enabled = true;
        }
        public void WriteToFile(string Message)
        {
            string path = "D:\\ErrorLogs";
            if (!Directory.Exists(path))
            {
                Directory.CreateDirectory(path);
            }
            string filepath = "D:\\ErrorLogs\\Log_" + DateTime.Now.Date.ToShortDateString().Replace('/', '_') + ".txt";
            if (!File.Exists(filepath))
            {
                // Create a file to write to.   
                using (StreamWriter sw = File.CreateText(filepath))
                {
                    sw.WriteLine(Message);
                }
            }
            else
            {
                using (StreamWriter sw = File.AppendText(filepath))
                {
                    sw.WriteLine(Message);
                }
            }
        }
        private void OnElapsedTime(object sender, ElapsedEventArgs e)
        {
           
            try
            {
                frm.notifyIcon1.ShowBalloonTip(5);
                frm.ReadXML();
                WriteToFile("Service is Running at " + DateTime.Now);
            }
            catch
            {
                WriteToFile("Service is catch error at " + DateTime.Now);
            }
            
        }