private void ch_hurdalar(string tarih)
        {
            htmlTable.Clear();
            List <Hurdalar> hurdalar = new List <Hurdalar>();

            hurdalar = db.hurdalar_data_read(tarih, firma, unite);

            if (hurdalar[0].Hurda_id == 0)
            {
                //kayit bulunamadi
                htmlTable.Append("<tr>");
                htmlTable.Append("<td colspan='8'>" + hurdalar[0].Hurda_bilgitnm + "</td>");
                htmlTable.Append("</tr>");
            }
            else
            {
                foreach (var h in hurdalar)
                {
                    htmlTable.Append("<tr>");
                    htmlTable.Append("<td>" + h.Hurda_bilgitnm + "</td>");
                    htmlTable.Append("<td>" + h.Gunluk_kullanim + "</td>");
                    htmlTable.Append("<td>" + h.Aylik_kullanim + "</td>");
                    htmlTable.Append("<td>" + h.Yillik_kullanim + "</td>");
                    htmlTable.Append("<td>" + h.Gunluk_giris + "</td>");
                    htmlTable.Append("<td>" + h.Aylik_giris + "</td>");
                    htmlTable.Append("<td>" + h.Yillik_giris + "</td>");
                    htmlTable.Append("<td>" + h.Stok + "</td>");
                    htmlTable.Append("</tr>");
                }
            }

            ph_hurdalar.Controls.Add(new Literal {
                Text = htmlTable.ToString()
            });
        }