public IList<Core.Business.VirtualLabDataBigClass> GetBySql(string sqlwhere)
        {
            IList<Core.Business.VirtualLabDataBigClass> virtualLabDataBigClasslist = new List<Core.Business.VirtualLabDataBigClass>();
            SqlServerUtility sql = new SqlServerUtility();
            string sqlstr = "SELECT * FROM [dbo].[VirtualLabDataBigClass] where ";
            sqlstr += sqlwhere;
            SqlDataReader reader = sql.ExecuteSqlReader(sqlstr);

            if (reader != null)
            {
                while (reader.Read())
                {
                    Core.Business.VirtualLabDataBigClass virtualLabDataBigClass = new Core.Business.VirtualLabDataBigClass();

                    if (!reader.IsDBNull(0)) virtualLabDataBigClass.Id = reader.GetGuid(0);
                    if (!reader.IsDBNull(1)) virtualLabDataBigClass.Name = reader.GetString(1);
                    if (!reader.IsDBNull(2)) virtualLabDataBigClass.VirturlLabID = reader.GetGuid(2);

                    virtualLabDataBigClass.MarkOld();
                    virtualLabDataBigClasslist.Add(virtualLabDataBigClass);
                }
                reader.Close();
            }
            return virtualLabDataBigClasslist;
        }
        public IList<Core.Business.VirtualLabDataBigClass> GetAllVirtualLabDataBigClass()
        {
            IList<Core.Business.VirtualLabDataBigClass> virtualLabDataBigClasslist = new List<Core.Business.VirtualLabDataBigClass>();
            SqlServerUtility sql = new SqlServerUtility();

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

            if(reader != null)
            {
                while(reader.Read())
                {
                    Core.Business.VirtualLabDataBigClass virtualLabDataBigClass = new Core.Business.VirtualLabDataBigClass();

                    if (!reader.IsDBNull(0)) virtualLabDataBigClass.Id = reader.GetGuid(0);
                    if (!reader.IsDBNull(1)) virtualLabDataBigClass.Name = reader.GetString(1);
                    if (!reader.IsDBNull(2)) virtualLabDataBigClass.VirturlLabID = reader.GetGuid(2);

                    virtualLabDataBigClass.MarkOld();
                    virtualLabDataBigClasslist.Add(virtualLabDataBigClass);
                }
                reader.Close();
            }
            return virtualLabDataBigClasslist;
        }