public partial class WebForm1 : System.Web.UI.Page    {        public int i;        public static int j;        protected void Page_Load(object sender, EventArgs e)        {            if (!IsPostBack)            {                i = 9;                j = 9;            }        }        protected void Button1_Click(object sender, EventArgs e)        {            Response.Write(i.ToString()+"   "+j.ToString());        }    }

　　

点击按钮后运行结果 

0  9