private void InstallBookWatcher()
{
bookFilesWatcher = new FileSystemWatcher(DextopUtil.MapPath("~/books"), "*.dox")
{
EnableRaisingEvents = true,
IncludeSubdirectories = false
};
bookFilesWatcher.Created += OnDoxFileChanged;
bookFilesWatcher.Changed += OnDoxFileChanged;
bookFilesWatcher.Renamed += OnDoxFileChanged;
bookFilesWatcher.Deleted += OnDoxFileChanged;
}