ASP.NET DataValueField 屬性

<%@ 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="You selected: " & rb.SelectedItem.Text
end sub
</script>

<form runat="server">
<asp:RadioButtonList id="rb" AutoPostBack="True"
runat="server" onSelectedIndexChanged="displayMessage" />
<asp:label id="lbl1" runat="server" />
</form>