winform監聽關閉按鈕並彈出是否關閉的提示框

        private void Client_FormClosing(object sender, FormClosingEventArgs e)
        {
            
            DialogResult TS = MessageBox.Show("退出？", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
            if (TS == DialogResult.Yes)
            {

                WatchShutdown();
                e.Cancel = false;
            }
            else
            {
                e.Cancel = true;
            }
            //Cef.Shutdown();
        }