ASP.NET SelectedIndex 属性
最后更新于：2022-03-26 23:27:38
ASP.NET SelectedIndex 属性
定义和用法
SelectedIndex 属性表示列表中选定项的序号索引。
实例
下面的实例获取 RadioButtonList 控件中的某个 ListItem 的索引：
<script runat=”server”>
Sub Change(obj As Object, e As EventArgs)
Response.Write(“Selected index: ” & rb1.SelectedIndex)
End Sub
</script>
Sub Change(obj As Object, e As EventArgs)
Response.Write(“Selected index: ” & rb1.SelectedIndex)
End Sub
</script>
<form runat=server>
<asp:RadioButtonList id=”rb1″ AutoPostBack=”true”
runat=”server” OnSelectedIndexChanged=”Change”>
<asp:ListItem Text=”Item 1″ />
<asp:ListItem Text=”Item 2″ />
</asp:RadioButtonList>
</form>