<%@ Page Language="C#" AutoEventWireup="true" CodeFile="sj02_3.aspx.cs" Inherits="sj02_3" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<script>
var t1 = new Date();
document.write("当前时间是:" + t1.toLocaleTimeString());
</script>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title>显示时间及问候语</title>
</head>
<body>
<form id="form1" runat="server">
<%if(DateTime.Now.Hour<12)%>
上午好!
<%else%>
下午好!
</form>
</body>
</html>
vs提示if和else那部分有问题,但是参考书上是这样敲的