public void AddFile(IMetadataItem metadataItem, bool deleteFile)
        {
            var repositoryDir    = _appSettingService.GetRepositoryDir();
            var year             = metadataItem.ValutaDatum.Year;
            var documentId       = Guid.NewGuid();
            var extension        = Path.GetExtension(metadataItem.OrginalPath);
            var contentFileName  = _filenameGenerator.GetContentFilename(documentId, extension);
            var metadataFileName = _filenameGenerator.GetMetadataFilename(documentId);

            var targetDir = Path.Combine(repositoryDir, year.ToString());

            metadataItem.ContentFileExtension = extension;
            metadataItem.ContentFilename      = contentFileName;
            metadataItem.MetadataFilename     = metadataFileName;
            metadataItem.DocumentId           = documentId;
            metadataItem.ValutaYear           = year.ToString();

            if (!Directory.Exists(targetDir))
            {
                Directory.CreateDirectory(targetDir);
            }

            WriteXml(targetDir, metadataFileName, metadataItem);


            //move file
            File.Copy(metadataItem.OrginalPath, Path.Combine(targetDir, contentFileName));

            if (deleteFile)
            {
                var task = Task.Factory.StartNew(
                    () =>
                {
                    Task.Delay(500);
                    File.Delete(metadataItem.OrginalPath);
                });
                try
                {
                    Task.WaitAll(task);
                }
                catch (Exception e)
                {
                    MessageBox.Show(e.Message);
                }
            }
        }