internal static class Program
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            RadControl.EnableRadAutoScale = true;
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);


            string text = "Are you sure you want to exit?";
            string caption = "Application";
            RadMessageIcon icon = RadMessageIcon.Question;
            RadMessageBox.Show(text, caption, MessageBoxButtons.YesNo, icon);

            RadMessageBox.Show(text, caption, MessageBoxButtons.YesNoCancel, icon); 
       

RadControl.EnableRadAutoScale = false;