菜鸟300问之三--------------C#语句在HTML语句中不能动

<%@ Page language="c#" Codebehind="WebForm1.aspx.cs" AutoEventWireup="false" Inherits="WebApplication1.WebForm1" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<html>
<head>
<title>WebForm1</title>
<meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1">
<meta name="CODE_LANGUAGE" Content="C#">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
</head>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
In WebServerLand the time is currently:
<asp:Label ID="time" Runat="server" />
</form>

    
</body>
</html>
<script language="C#" runat="server">
 void Page_Load()
    {
    time.Text=DateTime.Now.ToString();
    }
</script>
为什么运行结果没有实现<script language="C#" runat="server">
 void Page_Load()
    {
    time.Text=DateTime.Now.ToString();
    }
</script>所要求的初始化效果？？大虾解释一下为什么，越详细越好噢！！