private void SetColumnNames()
        {
            GazetteerColumnHeaders columnHeaders = new GazetteerColumnHeaders();

            columnHeaders.Level1Code    = cboLevel1Codes.SelectedValue as string;
            columnHeaders.Level1Name    = cboLevel1Names.SelectedValue as string;
            columnHeaders.Level1AltName = cboLevel1AltNames.SelectedValue as string;

            columnHeaders.Level2Code    = cboLevel2Codes.SelectedValue as string;
            columnHeaders.Level2Name    = cboLevel2Names.SelectedValue as string;
            columnHeaders.Level2AltName = cboLevel2AltNames.SelectedValue as string;

            columnHeaders.Level3Code    = cboLevel3Codes.SelectedValue as string;
            columnHeaders.Level3Name    = cboLevel3Names.SelectedValue as string;
            columnHeaders.Level3AltName = cboLevel3AltNames.SelectedValue as string;
            geoCoder.SetGazetteerColumns(columnHeaders);
        }