public DataSet show()
    {
        DataSet oDs = null;
        try
        {
            string sql;
            sql = "SELECT * FROM ";
            OpenConnection();
            OleDbDataAdapter oDA = new OleDbDataAdapter(sql, conn);
            oDs = new DataSet();
            oDA.Fill(oDs, "Movie");
            oDs.Tables.Columns.Add("Co.", typeof(string), "Substring(Brife, 1, 10) + '...'");
            if (oDs == null)
            {
                errDesc = "";
            }
            else
            {
                ClearErrors();
            }
            CloseConnection();
        }
        catch (Exception ex)
        {
            errDesc = ex.Message;
            CloseConnection();
        }
        return (oDs);
    }