public int DeleteTest(int id)
        {
            int result = 0;

            try
            {
                result = _test_object.DeleteTest(id);
                if (result > 0)
                {
                    return(result);
                }
                else
                {
                    throw new OASCustomException("Operation failed.");
                }
            }
            catch (SqlException sqlex)
            {
                log.Error(sqlex);
            }
            catch (OASCustomException customex)
            {
                log.Error(customex.Message);
            }
            catch (Exception ex)
            {
                log.Error(ex.Message);
            }
            return(result);
        }