C# 關閉視窗時，確認是否關閉 - Form_Closing事件

離開程式，跳出確認視窗

 

private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            if (MessageBox.Show("即將關閉，是否繼續？", "確認", MessageBoxButtons.YesNo) == DialogResult.Yes)
            {
                e.Cancel = false;  //關閉視窗
            }
            else
            {
                e.Cancel = true;    //取消關閉
            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            this.Close();    //關閉視窗button
        }