/// <summary>
/// 监听事件触发的方法
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void OnProcess(object sender, FileSystemEventArgs e)
{
try
{
FileChangeType changeType = FileChangeType.Unknown;
if (e.ChangeType == WatcherChangeTypes.Created)
{
if (File.GetAttributes(e.FullPath) == FileAttributes.Directory)
{
changeType = FileChangeType.NewFolder;
}
else
{
changeType = FileChangeType.NewFile;
}
}
else if (e.ChangeType == WatcherChangeTypes.Changed)
{
//部分文件创建时同样触发文件变化事件，此时记录变化操作没有意义
//如果
//if (_queue.SelectAll(
// delegate (FileChangeInformation fcm)
// {
// return fcm.NewPath == e.FullPath && fcm.ChangeType == FileChangeType.Change;
// }).Count<FileChangeInformation>() > 0)
//{
// return;
//}
//文件夹的变化，只针对创建，重命名和删除动作，修改不做任何操作。
//因为文件夹下任何变化同样会触发文件的修改操作，没有任何意义.
if (File.GetAttributes(e.FullPath) == FileAttributes.Directory)
{
return;
}
changeType = FileChangeType.Change;
}
else if (e.ChangeType == WatcherChangeTypes.Deleted)
{
changeType = FileChangeType.Delete;
}
//创建消息，并压入队列中
FileChangeInformation info = new FileChangeInformation(Guid.NewGuid().ToString(), changeType, e.FullPath, e.FullPath, e.Name, e.Name);
_queue.Enqueue(info);
}
catch
{
Close();
}
}
/// <summary>
/// 文件或目录重命名时触发的事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void OnFileRenamed(object sender, RenamedEventArgs e)
{
try
{
//创建消息，并压入队列中
FileChangeInformation info = new FileChangeInformation(Guid.NewGuid().ToString(), FileChangeType.Rename, e.OldFullPath, e.FullPath, e.OldName, e.Name);
_queue.Enqueue(info);
}
catch
{
Close();
}
}
/// <summary>
/// 获取一条文件变更消息
/// </summary>
/// <returns></returns>
public FileChangeInformation Get()
{
FileChangeInformation info = null;
if (_queue.Count > 0)
{
lock (_queue)
{
_queue.TryDequeue(out info);
}
}
return(info);
}