ASP.NET 事件处理

tem.Web.Security;using System.Web.UI;using System.Web.UI.HtmlControls;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Xml.Linq;namespace eventdemo { public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { lblmessage.Text += "Page load event handled. <br />"; if (Page.IsPostBack) { lblmessage.Text += "Page post back event handled.<br/>"; } } protected void Page_Init(object sender, EventArgs e) { lblmessage.Text += "Page initialization event handled.<br/>"; } protected void Page_PreRender(object sender, EventArgs e) { lblmessage.Text += "Page prerender event handled. <br/>"; } protected void btnclick_Click(object sender, EventArgs e) { lblmessage.Text += "Button click event handled. <br/>"; } }}执行页面。标签显示页面加载，页面初始化以及页面预览事件。点击按钮查看效果：