protected void XoaTapTin(int maTapTin)
        {
            try
            {

                //xac nhan truoc khi xoa

                    BUSTapTinBaiViet bus = new BUSTapTinBaiViet();
                    TAPTINBAIVIET ttbv = bus.TimKiemMaTapTin(maTapTin);
                    XoaFile(ttbv.DuongDan);
                    if (bus.Xoa(maTapTin) == 0)
                    {
                        //Thong bao

                        Response.Redirect("TapTinBaiViet.aspx");
                    }

            }

            catch
            {
            }
        }
        protected void Page_Load(object sender, EventArgs e)
        {
            //Thong tin nguoi dung
            NGUOIDUNG a = new NGUOIDUNG();
            a.MaNguoiDung = 1;
            Session["NGUOIDUNG"] = a;

            if (Request.QueryString["id"] != null)
            {
                //lay ma
                int mataptin = int.Parse(Request.QueryString["id"]);

                //lay thong tin va load len cac textbox
                BUSTapTinBaiViet BUSTapTinBaiViet = new BUSTapTinBaiViet();
                TAPTINBAIVIET lpDTO = BUSTapTinBaiViet.TimKiemMaTapTin(mataptin);
                this.txtmataptin.Text = Convert.ToString(lpDTO.MaTapTin );
                this.txttentaptin.Text = lpDTO.TenTapTin ;
                this.txtmabaiviet.Text = Convert.ToString(lpDTO.MaBaiViet );
                this.txtduongdan.Text = lpDTO.DuongDan ;
            }
        }