问号里的e.cancel=ture/false;为什么打不出

Question

  private void Form1_FormClosing(object sender, FormClosedEventArgs s)

        {

            DialogResult dr = MessageBox.Show("是否关闭窗口", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Warning);

            if (dr == DialogResult.Yes) { ?} else {?   } }

Answer 1

你这个FormClosedEventArgs的参数名不是s吗？？。。用s.cancel