<?xml version="1.0" encoding="ISO-8859-1"?>
<countries>
<country>
<text>China</text>
<value>C</value>
</country>
<country>
<text>Sweden</text>
<value>S</value>
</country>
<country>
<text>France</text>
<value>F</value>
</country>
<country>
<text>Italy</text>
<value>I</value>
</country>
</countries>
把 DataSet 綁定到 List 控制項-------------------------------------------------------------------------------------
首先，匯入 "System.Data" 命名空間。我們需要該命名空間與 DataSet 對象一起工作。把下面這條指令包含在 .aspx 頁面的頂部。
在頁面首先載入時把 XML 檔案載入 DataSet。
在 .aspx 頁面建立一個 RadioButtonList 控制項（沒有任何 asp:ListItem 元素）。
添加一個子常式，該子常式會在使用者點擊 RadioButtonList 控制項中的項目時執行。當使用者點擊某個選項按鈕時，label 中會出現一條文本。
<%@ Import Namespace="System.Data" %>
<script runat="server">
sub Page_Load
if Not Page.IsPostBack then
dim mycountries=New DataSet
mycountries.ReadXml(MapPath("countries.xml"))
rb.DataSource=mycountries
rb.DataValueField="value"
rb.DataTextField="text"
rb.DataBind()
end if
end sub
sub displayMessage(s as Object,e As EventArgs)
lbl1.text="Your favorite country is: " & rb.SelectedItem.Text
end sub
</script>
<html>
<body>
<form runat="server">
<asp:RadioButtonList id="rb" runat="server"
AutoPostBack="True" onSelectedIndexChanged="displayMessage" />
<p><asp:label id="lbl1" runat="server" /></p>
</form>
</body>
</html>
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