private void SetColumnNames()
        {
            InputColumnHeaders inputColumnHeaders = new InputColumnHeaders();

            inputColumnHeaders.Level1 = cboLevel1.SelectedValue as string;
            inputColumnHeaders.Level2 = cboLevel2.SelectedValue as string;
            inputColumnHeaders.Level3 = cboLevel3.SelectedValue as string;

            geoCoder.SetInputColumns(inputColumnHeaders);
        }