static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            //-----------------------
            SplashScreen = new StartLoadingScreen();
            var splashThread = new Thread(new ThreadStart(() => Application.Run(SplashScreen)));
            splashThread.SetApartmentState(ApartmentState.STA);
            splashThread.Start();

            MainForm = new frmLogin();            
            MainForm.Load += MainForm_LoadCompleted;
            Thread.Sleep(2000);
            Application.Run(MainForm);

        }

private static void MainForm_LoadCompleted(object sender,EventArgs e)
        {
            if (SplashScreen != null && !SplashScreen.Disposing && !SplashScreen.IsDisposed)
                SplashScreen.Invoke(new Action(() => SplashScreen.Close()));            
            MainForm.TopMost = true;            
            MainForm.Activate();
            MainForm.TopMost = false;
        }