登录或者注册后返回原来页面

login.aspx:

 

protected void Page_Load(object sender, EventArgs e)
    {
         if (!IsPostBack)
        {
            if (Request.QueryString["url"] != null)
                hid_url.Value = Request.QueryString["url"].ToString();
        }
    }

登录按钮事件：

if (string.IsNullOrEmpty(hid_url.Value))
                Response.Redirect("Index.aspx");
            else
                Response.Redirect(hid_url.Value);

 

传值：

div_login.InnerHtml = string.Format(@"<a title=""登陆"" href='../Login.aspx{0}'>登陆</a> | <a title=""注册"" href='../Reg.aspx{0}'>注册</a>", RawUrl());

 private string RawUrl()
    {
        try
        {
            return string.IsNullOrEmpty(Request.RawUrl.Trim()) == true ? "" : string.Format("?url={0}", HttpUtility.UrlEncode(Request.RawUrl.Trim()));
        }
        catch
        { }
        return "";

 

---------------------------

if(string.IsNullOrEmpty(Request.RawUrl.Trim()))
                    Response.Redirect("default.aspx");
                else
                    Response.Redirect(Request.RawUrl.Trim());
    }