MessageBox.Show解决方案

    public partial class Form1 : Form    {        int i = 0;        public Form1()        {            InitializeComponent();        }        private void Form1_Load(object sender, EventArgs e)        {            timer1.Enabled = true;            timer1.Interval = 1000;        }        private void timer1_Tick(object sender, EventArgs e)        {            i++;            MessageBox.Show(i.ToString());            if (i >= 5)                timer1.Enabled = false;//timer停止        }    }