private void ExportExcel_Click(object sender, RoutedEventArgs e)
        {
            Microsoft.Win32.SaveFileDialog saveFile = new Microsoft.Win32.SaveFileDialog();
            saveFile.DefaultExt = ".xlsx";
            saveFile.Filter     = "Excel file (.xlsx)|*.xlsx";

            if (saveFile.ShowDialog() == true)
            {
                using (new WaitCursor())
                {
                    _exExcel.CreateNewExcel(saveFile.FileName);
                }
                MessageBox.Show("The configuration has been successfully exported!");
            }
        }