private void ch_analizler(string tarih)
        {
            htmlTable.Clear();
            List <Analizler> analizler = new List <Analizler>();

            analizler = db.analizler_data_read(tarih, firma, unite);

            if (analizler[0].Analiz_id == 0)
            {
                //kayit bulunamadi
                htmlTable.Append("<tr>");
                htmlTable.Append("<td colspan='10'>" + analizler[0].Dokum_no + "</td>");
                htmlTable.Append("</tr>");
            }
            else
            {
                foreach (var a in analizler)
                {
                    htmlTable.Append("<tr>");
                    htmlTable.Append("<td>" + a.Dokum_no + "</td>");
                    htmlTable.Append("<td>" + a.C + "</td>");
                    htmlTable.Append("<td>" + a.Si + "</td>");
                    htmlTable.Append("<td>" + a.S + "</td>");
                    htmlTable.Append("<td>" + a.P + "</td>");
                    htmlTable.Append("<td>" + a.Mn + "</td>");
                    htmlTable.Append("<td>" + a.Ni + "</td>");
                    htmlTable.Append("<td>" + a.Cr + "</td>");
                    htmlTable.Append("<td>" + a.Cu + "</td>");
                    htmlTable.Append("<td>" + a.V + "</td>");
                    htmlTable.Append("</tr>");
                }
            }

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