/// <summary>
        ///  Running query
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnQryRange1_Click(object sender, EventArgs e)
        {
            try
            {
                DTO.RangeFilter range = new DTO.RangeFilter();
                //TODO: Validation
                range.Birthday           = dtpQryRangeDate.Value;
                range.EnrollmentFeeStart = double.Parse(mskQryRangeEnrol1.Text);
                range.EnrollmentFeeEnd   = double.Parse(mskQryRangeEnrol2.Text);

                FillListView(_customerBll.QueryUsingRanges(range), lvwHits3);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
            }
        }