protected void ImageButton1_Click(object sender, ImageClickEventArgs e)
    {
        CS.BLL.UserInfo bllui = new CS.BLL.UserInfo();
        CS.Model.UserInfo uif = new CS.Model.UserInfo();
        CS.BLL.LmUserXinXi luxx = new CS.BLL.LmUserXinXi();
        CS.Model.LmUserXinXi model = new CS.Model.LmUserXinXi();
        bool b = bllui.Existss(YongHuMing.Value.ToString(), MiMa.Value.ToString());

        CS.Model.UserInfo UIF = bllui.GetModel(YongHuMing.Value);
        userid = UIF.UserID;
        if (b){

           bool bl = luxx.exct(userid);
            

            if (bl)
            {
                model.UserID = userid;
                model.NickName = YongHuMing.Value.ToString();
                model.ZhangHuLeiXing =1;
                model.ZhuangTai = "正常";
                CS.Model.LmUserXinXi Model = model;
                luxx.Add(Model);
                Page.ClientScript.RegisterStartupScript(typeof(Page), "", "alert('登录成功')", true);
            }
            else 
            {
                Page.ClientScript.RegisterStartupScript(typeof(Page), "", "alert('登录成功')", true);
            }

            

        }
        else
        {
            Page.ClientScript.RegisterStartupScript(typeof(Page), "", "alert('登录失败,账户或密码错误.')", true);
        }
    }

        public bool exct(int UserID) 
        {
            return dal.exct(UserID);
        }
--------------------
        /// <summary>
        /// 查询用户是否已加入到联盟2011年5月24日
        /// </summary>
        /// <param name="UserID"></param>
        /// <returns></returns>
        public bool exct(int UserID)
        {

            StringBuilder strSql = new StringBuilder();
            strSql.Append("select count(1) from LmUserXinXi");
            strSql.Append(" where UserID=@UserID");
            SqlParameter[] parameters = {
                    new SqlParameter("@UserID", SqlDbType.Int)};
            parameters[0].Value = UserID;


            return DbHelperSQL.Exists(strSql.ToString(), parameters);
        }