private void btnSearching_Click(object sender, EventArgs e)
        {
            DateTime searchingDate = new DateTime();

            DateTime.TryParseExact(txtSearchingDate.Text, "dd/MM/yyyy", System.Globalization.CultureInfo.InvariantCulture,
                                   System.Globalization.DateTimeStyles.None, out searchingDate);
            int hour = 0;
            int min  = 0;

            int.TryParse(txtHour.Text, out hour);
            int.TryParse(txtMins.Text, out min);

            lbStatus.Text = $"Searching for data in {searchingDate.ToString("dd/MM/yyyy")} at {hour.ToString("00")}:{min.ToString("00")}";
            switch (cbxSearchingMode.SelectedIndex)
            {
            case 0:     // searching by dd
                DLogger.SearchingData(searchingDate, hour, min, DLogger.SearchingMode.SDAY)
                .ContinueWith(data => txtSearchingData.SetPropertyThreadSafe(() => txtSearchingData.Text, data.Result));
                break;

            case 1:     // searching by HH
                DLogger.SearchingData(searchingDate, hour, min, DLogger.SearchingMode.SHOUR)
                .ContinueWith(data => txtSearchingData.SetPropertyThreadSafe(() => txtSearchingData.Text, data.Result));
                break;

            case 2:     // searching by HH:mm
                DLogger.SearchingData(searchingDate, hour, min, DLogger.SearchingMode.SHOUR_AND_MIN)
                .ContinueWith(data => txtSearchingData.SetPropertyThreadSafe(() => txtSearchingData.Text, data.Result));
                break;
            }
        }