根据客户中英文系统进入中英文页面

从HttpRequest.UserLanguages得到进行判断
or

HttpRequest.UserAgent

private void Page_Load(object sender, System.EventArgs e)
        {
            if (Request.UserLanguages[0] .ToString ()=="zh-cn")
                            {
                                   Response.Redirect("zh-cn.apsx");
                             }
                             else
                             {
                                   Response.Redirect("en.aspx");  
                              }
                   }