c# 关闭窗体时提示的小例子

代码如下:private void WorkflowConfigure_FormClosing(object sender, FormClosingEventArgs e)        {            DialogResult result = MessageBox.Show(“此操作会丢弃您的当前设置，确定要继续？”, “退出”, MessageBoxButtons.YesNo, MessageBoxIcon.Question);             if (DialogResult.Yes == result)            {                e.C