public Core.Business.VirtualLabInstrument Select(Guid id)
        {
            SqlServerUtility sql = new SqlServerUtility();

            sql.AddParameter("@ID", SqlDbType.UniqueIdentifier, id);
            SqlDataReader reader = sql.ExecuteSPReader("usp_SelectVirtualLabInstrument");

            if (reader != null && !reader.IsClosed && reader.Read())
            {
                Core.Business.VirtualLabInstrument virtualLabInstrument = new Core.Business.VirtualLabInstrument();

                if (!reader.IsDBNull(0)) virtualLabInstrument.Id = reader.GetGuid(0);
                if (!reader.IsDBNull(1)) virtualLabInstrument.ExperimentalID = reader.GetGuid(1);
                if (!reader.IsDBNull(2)) virtualLabInstrument.InstrumentID = reader.GetGuid(2);

                reader.Close();
                return virtualLabInstrument;
            }
            else
            {
                if (reader != null && !reader.IsClosed)
                    reader.Close();

                return null;
            }
        }
        public IList<Core.Business.VirtualLabInstrument> GetAllVirtualLabInstrument()
        {
            IList<Core.Business.VirtualLabInstrument> virtualLabInstrumentlist = new List<Core.Business.VirtualLabInstrument>();
            SqlServerUtility sql = new SqlServerUtility();

            SqlDataReader reader = sql.ExecuteSPReader("usp_SelectVirtualLabInstrumentsAll");

            if(reader != null)
            {
                while(reader.Read())
                {
                    Core.Business.VirtualLabInstrument virtualLabInstrument = new Core.Business.VirtualLabInstrument();

                    if (!reader.IsDBNull(0)) virtualLabInstrument.Id = reader.GetGuid(0);
                    if (!reader.IsDBNull(1)) virtualLabInstrument.ExperimentalID = reader.GetGuid(1);
                    if (!reader.IsDBNull(2)) virtualLabInstrument.InstrumentID = reader.GetGuid(2);

                    virtualLabInstrument.MarkOld();
                    virtualLabInstrumentlist.Add(virtualLabInstrument);
                }
                reader.Close();
            }
            return virtualLabInstrumentlist;
        }