DropDownList 控件
定义和用法
SelectedIndex 属性用于获取或设置 DropDownList 中被选项目的索引号。
实例
下面的实例输出了被选项目的文本:
<script runat="Server"> Sub GetName(obj As Object, e As EventArgs) lbl.Text = ddList.SelectedItem.Text End Sub </script> <form runat="Server"> Select a name from the list: <asp:DropDownList id="ddList" runat="Server"> <asp:ListItem Text="Peter" /> <asp:ListItem Text="Lois" /> <asp:ListItem Text="Cleveland" /> <asp:ListItem Text="Quagmire" /> <asp:ListItem Text="Joe" /> </asp:DropDownList> <asp:Button Text="Select" OnClick="GetName" Runat="Server" /> <br /> Name is: <asp:Label id="lbl" Runat="Server"/> </form>
DropDownList 控件