private void AddFolder(object obj)
        {
            bool isAlreadyListed = _blackListedDirectories.Any(f => f.Name == _newFolder);

            if (!isAlreadyListed)
            {
                if (!string.IsNullOrEmpty(_newFolder))
                {
                    var blackFolder = new BlackListedDirectory
                    {
                        Name = _newFolder
                    };

                    _databaseService.AddBlacklistedDirectory(blackFolder);

                    BlackListedDirectories = _databaseService.GetBlackListedDirectories();

                    NewFolder = string.Empty;
                }
            }
        }