/// <summary>
       ///  删除一条数据根据用户ID
       /// </summary>
       /// <param name="DelModle"></param>
       /// <returns></returns>
       public bool Delete(Modle.UserInfos DelModle)
       {
           conn.Open();
           string sql = "delete  * from UserInfos where UserId=@uid";
           SqlCommand _cmd = new SqlCommand(sql, conn);
           SqlParameter delCp = new SqlParameter("@uid", SqlDbType.Int);
           delCp.Value = DelModle.UserId;
           _cmd.Parameters.Add(delCp);
           return _cmd.ExecuteNonQuery() > 0;
           conn.Close();
          

       }

 public bool BLL_Del(Modle.UserInfos mu_del)
        {
            DAL.UserService _du = new UserService();
            return _du.Delete(mu_del);
        }

 int strid = Convert.ToInt32(Request.QueryString["id"]);

                Modle.UserInfos mu = new Modle.UserInfos();
                mu.UserId = Convert.ToInt32(strid);
                BLL.UBLL bu = new BLL.UBLL();
                bu.BLL_Del(mu);
                Response.Write("删除成功！");