我们经常需要用到的window关闭程序时提示代码，和大家一起来分享！

public partial class frmTest : Form

{

                //显示构造

               public frmTest()

              {             

                        //初始化组件
                        InitializeComponent();
               }

             //重写关闭方法
              protected override void OnClosing(CancelEventArgs e)
             {
                   if (MessageBox.Show(\"确定要退出程序吗？\", \"提示\", MessageBoxButtons.YesNo) == DialogResult.No)
                  {
                          e.Cancel = true;
                           base.OnClosing(e);
                   }
                   else
                  {
                          Application.Exit();
                 }
              }

}