捕捉窗口关闭事件（转贴）

public class whoisresult : System.Windows.Forms.Form
{
.............................
private bool TangSeng = false;
}
private void InitializeComponent()
{
.............................
this.Closing += new CancelEventHandler(this.whoisresult_Cancel);
}
        protected void whoisresult_Cancel(object sender,CancelEventArgs e)
        {
       if(!TangSeng)
       {
           e.Cancel = true;
           TangSeng = true;
           MessageBox.Show("悟空，你也太调皮了，每次都要我提醒你，诶~~~");
       }
       else
       {
           e.Cancel = false;
           MessageBox.Show("这次总算学乖了");
       }
        }
窗体关闭事件可以取消，通过设置cancel属性