winfrom在main函数中开启不同的窗体

static void Main()
        {

            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            FormStart fs = new FormStart();
            fs.ShowDialog();
            if (fs.DialogResult==DialogResult.OK)
            {
                 Application.Run(new mainForm());
            }
         
        }