Add a new (inventory sys. with C#)

public string AddScholReq(string FName,string address,string campus,string subject,string telephone,string morbidity,string PDeath,string Years,string Bcertificate,string reqLetter,string regLetter,string UniLetter,string dates,string ImagePath)
        {
            ConnectDB dbcon = new ConnectDB();
            OdbcConnection ConnectDBToAddScholReq = dbcon.createDBCon();
         
            string subTblID = "";
            int MyID = 0;
            using (OdbcCommand GetScholReqMaxIDCommand = new OdbcCommand("SELECT max(counts) FROM ScholRequest", sqlCon()))
            {
                using (OdbcDataReader GetScholReqMaxReader = GetScholReqMaxIDCommand.ExecuteReader())
                {
                    while (GetScholReqMaxReader.Read())
                    {
                        MyID = GetScholReqMaxReader.GetInt32(0);
                    }
                }
            }
            //int tempScholReqID = int.Parse(subTblID.Substring(1));
            subTblID = "D" + (++MyID);
            try
            {
            //string datestemp = "2011/07/23";
                string addToReg= "INSERT INTO ScholRequest  VALUES('" + subTblID + "','" + FName + "','" + address + "','" + campus + "','" + subject + "','" + telephone + "','" + morbidity + "','"+PDeath+"','"+Years+"','"+Bcertificate+"','"+reqLetter+"','"+regLetter+"','"+UniLetter+"','"+dates+"','"+ImagePath+"')";
                OdbcCommand addToScholReqCom = new OdbcCommand(addToReg, sqlCon());
                addToScholReqCom.ExecuteNonQuery();
                return subTblID;




            }
            catch (Exception AddScholsReq)
            { return "Error !!! try again "; }


        }