请问下面代码里的ConnectionString=' <%$ ConnectionStrings:Movies %>'中的 <%$是什么语法意思？
求问，谢谢！！
HTML code:
<%@ Page Language="C#" %>
<%@ Register TagPrefix="custom" Namespace="myControls" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
protected void btnSubmit_Click(object sender, EventArgs e)
{
lblResult.Text = ComboBox1.Text;
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>Show ComboBox</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<custom:ComboBox
id="ComboBox1"
ConnectionString='<%$ ConnectionStrings:Movies %>'
DataKeyName="Title"
SelectCommand="SELECT Title from Movies
WHERE Title LIKE @Title+'%'
ORDER BY Title"
Style="float:left"
Runat="Server" />
<asp:Button
id="btnSubmit"
Text="Submit"
