private void AddToScanList(object sender, RoutedEventArgs e)
        {
            var    button = (Button)e.Source;
            string row    = (string)button.DataContext;

            try
            {
                if (Configuration.PathsNotToScan.Contains(row))
                {
                    Configuration.PathsNotToScan.Remove(row);
                    var dir = FlaggedDirectories.Where(f => f.FullPath == row).FirstOrDefault();
                    if (dir != null)
                    {
                        dir.IsScanable = true;
                    }
                    else
                    {
                        var file = FlaggedFiles.Where(f => f.FullPath == row).FirstOrDefault();
                        if (file != null)
                        {
                            file.IsScanable = true;
                        }
                    }

                    button.IsEnabled = false;
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show($"Error: {ex.Message}", "Error");
            }
        }