C#WinForm隱藏窗體關閉按鈕的方法

namespace 隱藏關閉按鈕的測試
{
    public partial class Form1 : Form
    {
        # region 隱藏關閉按鈕的代碼
        private const int CP_NOCLOSE_BUTTON = 0x200;
        protected override CreateParams CreateParams
        {
            get
            {
                CreateParams myCp = base.CreateParams;
                myCp.ClassStyle = myCp.ClassStyle | CP_NOCLOSE_BUTTON;
                return myCp;
            }
        }
        # endregion
        public Form1()
        {
            InitializeComponent();
        }
        private void button1_Click(object sender, EventArgs e)
        {
            //重啟軟件：
            Application.Restart();
        }
        private void button2_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }
    }
}