private void BtnFileSearch_Click(object sender, EventArgs e)
        {
            string newFilePath = FileSearchPopup.SearchNewFilePath(OutputFilePath);

            OutputFilePath = newFilePath;
        }
        private void BtnFileSearch_Click(object sender, EventArgs e)
        {
            string newFilePath = FileSearchPopup.SearchExistingFilePath(InputFilePath);

            InputFilePath = newFilePath;
        }