public void StartWatching(Upload upload)
{
// only need to watch if the datasource is a spreadsheet
if (upload.DataSourceType == DataSourceType.Spreadsheet)
{
// try and find an existing watcher
FileWatchers result = _watcherList.Find(
delegate(FileWatchers fw)
{
return fw.Upload == upload;
}
);
if (result == null)
{
// start new
FileWatchers fw = new FileWatchers();
fw.FileWatcher = StartWatching(upload.DataSource);
fw.Upload = upload;
_watcherList.Add(fw);
}
else
{
// restart existing
result.Upload = upload;
result.FileWatcher.Dispose(); // releases any held resources from previous source
result.FileWatcher.Path = upload.DataSource; // update if user has made changes
result.FileWatcher.EnableRaisingEvents = true;
}
}
}
public FileWatcher()
{
// list to store all fileWatchers for each upload
_watcherList = new List<FileWatchers>();
// get all the directories that need to be watched
ISession iSession = DBFactory.CreateNewSession();
IList<Upload> uploadList = DataLoader.GetSpreadSheetUploadList(iSession);
iSession.Close();
foreach (Upload upload in uploadList)
{
if (upload.DataSource != null)
{
try
{
FileWatchers fw = new FileWatchers();
fw.FileWatcher = StartWatching(upload.DataSource);
fw.Upload = upload;
_watcherList.Add(fw);
}
catch
{
MessageBox.Show("The directory location path for " + upload.Name + " can not be found please check if the path name is correct.",
"Spreadsheet directory path error");
}
}
}
}