17370845950

1、页面上添加
复制代码 代码如下:
<asp:DropDownList ID="DropDownList1" runat="server">
                            </asp:DropDownList>

2、在head之间
复制代码 代码如下:     
<script type="text/javascript">
            function openwindow(url) {

                if (url != "") {
                    window.open(url);

                }

            }
    </script>

3、cs代码
复制代码 代码如下:
protected void Page_Load(object sender, EventArgs e)
        {
            DropDownList1.Attributes.Add("onchange", "javascript:openwindow(this.value)");

        }