前台HTML代码<%
@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" ><head runat="server"> <title>无标题页</title></head><body> <form id="form1" runat="server"> <div> 就是隐藏字段，常被用与表单中，传送一个隐藏的值！下面演示的是给隐藏字段赋值并显示出来！<asp:HiddenField ID="HiddenField1" runat="server" /> <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="按一盘看" /></div> </form></body></html>后台C#代码using System;using System.Data;using System.Configuration;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;public partial class _Default : System.Web.UI.Page {
protected void Page_Load(object sender, EventArgs e)
{
} protected void Button1_Click(object sender, EventArgs e) { if (HiddenField1.Value == string.Empty)//判断如果现在隐藏字段的值为空 HiddenField1.Value = "代表川哥向你问好！"; else HiddenField1.Value = "这是第二次按了"; Response.Write(HiddenField1.Value.ToString());//在屏幕上打印出隐藏字段的值 }
}