ASP.NET DataValueField 属性

实例

下面的实例使用一个 XML 文件来填充 RadioButtonList 的数据：

   <%@ 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>