protected void GridViewTAPTINBAIVIET_RowCommand(object sender, GridViewCommandEventArgs e)
        {
            if (e.CommandName == "XoaFile")
            {

                // Convert the row index stored in the CommandArgument
                // property to an Integer.
                int index = Convert.ToInt32(e.CommandArgument);

                List<TAPTINBAIVIET> lt = new List<TAPTINBAIVIET>();

                BUSTapTinBaiViet BUSTapTinBaiViet = new BUSTapTinBaiViet();
                lt = BUSTapTinBaiViet.getLichLamViec();

                XoaFile_Click(lt[index].TenTapTin);
            }
        }
        //Load
        public int LoadTAPTINBAIVIET()
        {
            List<TAPTINBAIVIET> lt = new List<TAPTINBAIVIET>();

            BUSTapTinBaiViet BUSTapTinBaiViet = new BUSTapTinBaiViet();

            lt = BUSTapTinBaiViet.getLichLamViec();

            if (lt.Count > 0)
            {
                this.GridViewLichLamViec.DataSource = lt;
                GridViewLichLamViec.DataBind();
                PanelDanhSach.Visible = true;
                PanelMessage.Visible = false;
                return lt.Count;
            }
            else
            {
                PanelDanhSach.Visible = false;
                PanelMessage.Visible = true;
                return 0;
            }
        }