static void Main() { Application.EnableVisualStyles(); Application.SetCompatibleTextRenderingDefault(false); do { if (MainClass.appStatus == "" || MainClass.appStatus == "open") { Login loginInstance = new Login(); MainClass main = MainClass.getInstance(); if (!File.Exists(MainClass.path + "\\cnt")) { Settings settings = new Settings(); Application.Run(settings); if (settings.status == "") { break; } } else { Application.Run(loginInstance); if (loginInstance.getStatus()) { MDI mdi = new MDI(); MainClass.setMDI(mdi); Application.Run(mdi); } if (MainClass.appStatus == "exit") { break; } } } } while (MainClass.appStatus != null); }