private void AddUserInfo(HttpContext context)
        {
            BLL.UserInfo bll      = new BLL.UserInfo();
            string       UserName = context.Request["U_username"];
            int          ExistRes = bll.Exist(string.Format("U_username='******'", UserName));

            if (ExistRes > 0)
            {
                context.Response.Write("exist");
                return;
            }
            Model.UserInfo model = new Model.UserInfo();
            model.U_username   = UserName;
            model.U_password   = model.U_username;
            model.U_power      = context.Request["U_power"];
            model.U_nickname   = context.Request["U_nickname"];
            model.U_mailbox    = context.Request["U_mailbox"];
            model.U_Role       = context.Request["U_Role"];
            model.U_Comments   = context.Request["U_Comments"];
            model.U_CreateDate = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
            model.U_IsDelete   = 0;
            if (bll.Add(model) > 0)
            {
                context.Response.Write("success");
            }
            else
            {
                context.Response.Write("fail");
            }
        }
        private void UpdateUserInfo(HttpContext context)
        {
            BLL.UserInfo bll      = new BLL.UserInfo();
            string       UserName = context.Request["U_username"];
            string       ID       = context.Request["U_ID"];
            int          ExistRes = bll.Exist(string.Format("U_username='******' and U_ID not in ({1})", UserName, ID));

            if (ExistRes > 0)
            {
                context.Response.Write("exist");
                return;
            }
            Model.UserInfo model = new Model.UserInfo();
            model.U_ID       = Convert.ToInt32(ID);
            model.U_username = UserName;
            model.U_power    = context.Request["U_power"];
            model.U_nickname = context.Request["U_nickname"];
            model.U_mailbox  = context.Request["U_mailbox"];
            model.U_Role     = context.Request["U_Role"];
            model.U_Comments = context.Request["U_Comments"];
            if (bll.Update(model))
            {
                context.Response.Write("success");
            }
            else
            {
                context.Response.Write("fail");
            }
        }