四月的筆記

關閉視窗→Close Event →MessageBox Yes / No

1. Yes 關閉
2. No 不關閉

        private void Form1_Load(object sender, EventArgs e)
        {
            this.FormClosing += new FormClosingEventHandler(Close_Event_MessageBox);
        }


        private void Close_Event_MessageBox(object sender, CancelEventArgs e)
        {


            if (MessageBox.Show("是否要關閉程式？", "關閉程式", MessageBoxButtons.YesNo) == DialogResult.Yes)
            {

                e.Cancel = false; 
            }
            else
            {

                e.Cancel = true;   
            }
        }