private void SaveSpec(ItemSpec spec)
{
if (!Directory.Exists(TargetFilename))
{
Directory.CreateDirectory(TargetFilename);
}
var fullFile = Path.Combine(TargetFilename, spec.Id.ToString(CultureInfo.InvariantCulture));
var stream = new FileStream(fullFile, FileMode.Create);
stream.Write(spec.Id);
stream.Write(spec.GetProperties().ToList());
stream.Close();
stream.Dispose();
}