web开发练习题
}
else {
counter = (int)ViewState["Counter"]; // 从ViewState中
} }
private int counter=0; //计数器
protected void btnClickMe_Click(object sender, EventArgs e) {
counter++; //累加计数器
ViewState["Counter"] = counter;
lblInfo.Text = "您单击了" + counter.ToString() + "次按钮。"; } }
7．当单击button按钮时，出现什么结果。
<html>
<head><title>Untitled Document</title> <script language=JavaScript> function add(){ var first=document.myForm.first.value ; var second=parseInt(document.myForm.second.value); var third= parseInt(document.myForm.third.value); alert(first+second+third); } </script> </head> <body> <form name="myForm"> <input type=text name="first" value="40"> <input type=text name="second" value="30"> <input type=text name="third" value="70"> <input type=button value="add" onclick=add()> </form>
</body> 403070 </html>
8．在划线部分写出程序的相关注释
<% @ Page Language="C#" %>
<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Data.OleDb" %> <script runat="server">
void Page_Load(Object sender, EventArgs e) {
OleDbConnection Conn=new OleDbConnection();