摘要：
1、页面上添加<asp:DropDownList ID="DropDownList1" runat="server"> </asp:DropDownList>2、在head之间 <script type="text/javascript"> function openwindow(url) { if (url != "") { window.open(url); } } </script>3、cs代码protected void Page_Load(object se 阅读全文