返回按钮的做法 js获取ur与下拉框的值l跳转与c#跳转

//得到指定ddl的选项值
        function getDdlSelectValue(ddlobj)
        {
            try
            {
                return ddlobj.options[ddlobj.selectedIndex].value            
            }
            catch(e)
            {
                return "";
            }
        }
        function getDdlSelectText(ddlobj)
        {
            try
            {
                return ddlobj.options[ddlobj.selectedIndex].text            
            }
            catch(e)
            {
                return "";
            }
        }
        
        function goTo()
        {
            var dll = document.getElementById("DDlTitle");
            var selectText = getDdlSelectText(dll);
            var select = getDdlSelectValue(dll);            
            var url = "/Manager/Article/PageContent.aspx?ShowType="+select+"&Type=P&Kind="+selectText+"&url="+escape(window.location.href);//得到当前页面的url
            window.location.href = url;

        }

js：window.location.href放在=左边得到当前页面地址，放在右边则为转向。

c#:string url = Request.RawUrl.ToLower();//得到当前页面的url

Response.Redirect("PageContent.aspx?ShowType="+this.DDlTitle.SelectedValue+"&Type=N&Kind="+DDlTitle.SelectedItem.Text+"&url="+url+"&Id="+DDlClassId.SelectedValue);