protected void btnDeleteAllTemp_Click(object sender, EventArgs e)
        {
            Business.Attachment bll = new XYECOM.Business.Attachment();

            int result = bll.DeleteAllTemp();

            if (result > 0)
                Alert("��ɾ����������" + result + "��", "", true);
            else
                Alert("����������", "", true);

            DataBind();
        }