系统文件监视程序C#锁定目录
本文关键字:锁定 监视 程序 系统文件 | 更新日期: 2023-09-27 18:04:27
我有一个系统文件观察器在C#中监视用户的下载目录。该程序是一个windows服务,每次它发现一个文件被放入或下载到下载目录时,文件都会被移动到另一个目录。由于服务正在运行,当尝试下载时,它将失败。Chrome只是说Failed - Download error
,没有说明错误是什么。我只能通过观察来假设我的windows服务正在锁定目录,所以什么都不能下载到它。当windows服务关闭时,我可以再次正常下载。我是C#的新手,所以我不熟悉常见的错误,但这是我的代码:
private void watch()
{
string pathUser = Environment.GetFolderPath(Environment.SpecialFolder.UserProfile);
path = Path.Combine(pathUser, "Downloads");
watcher.Path = path;
watcher.NotifyFilter = NotifyFilters.LastWrite
| NotifyFilters.FileName;
watcher.Filter = "*.*";
watcher.Changed += new FileSystemEventHandler(OnChanged);
watcher.EnableRaisingEvents = true;
}
private void OnChanged(object source, FileSystemEventArgs e)
{
String pUser = Environment.GetFolderPath(Environment.SpecialFolder.UserProfile);
String directoryName = Destination;
DirectoryInfo dirInfo = new DirectoryInfo(directoryName);
if (dirInfo.Exists == false)
Directory.CreateDirectory(directoryName);
List<String> MyFiles = Directory
.GetFiles(path, "*.*", SearchOption.AllDirectories).ToList();
foreach (string file in MyFiles)
{
FileInfo mFile = new FileInfo(file);
// to remove name collusion
if (new FileInfo(dirInfo + "''" + mFile.Name).Exists == false)
{
bool flag = true;
while (flag)
{
if (!IsFileLocked(file, 1))
{
mFile.MoveTo(dirInfo + "''" + mFile.Name);
flag = false;
}
}
}
}
}
更新我试着在移动之前过滤掉临时下载扩展,但我似乎仍然收到了错误。这是我的尝试:
String[] ignoreExt = { "crdownload","download", "temp", "tmp"};
private void OnChanged(object source, FileSystemEventArgs e)
{
String pUser = Environment.GetFolderPath(Environment.SpecialFolder.UserProfile);
String directoryName = Destination;
DirectoryInfo dirInfo = new DirectoryInfo(directoryName);
if (dirInfo.Exists == false)
Directory.CreateDirectory(directoryName);
List<String> MyFiles = Directory
.GetFiles(path, "*.*", SearchOption.AllDirectories).ToList();
foreach (string file in MyFiles)
{
FileInfo mFile = new FileInfo(file);
// to remove name collusion
if (new FileInfo(dirInfo + "''" + mFile.Name).Exists == false)
{
bool flag = true;
while (flag)
{
if (!IsFileLocked(file, 1))
{
if (mFile.Extension != ignoreExt[0] || mFile.Extension != ignoreExt[1] || mFile.Extension != ignoreExt[2] || mFile.Extension != ignoreExt[3])
{
mFile.MoveTo(dirInfo + "''" + mFile.Name);
// Clipboard.SetText(dirInfo + "''" + mFile.Name);
flag = false;
}
}
}
}
}
}
当你用Chrome下载一些东西时,它会创建一个Unconfirmed
文件,如下所示:Unconfirmed 50329.crdownload
我把这个文件拖走,在我的系统上手动测试了它,结果->Failed to Download - Error
我认为在Chrome完成下载之前,您的服务正在移动此文件。
编辑:
对于Chrome下载文件的示例,您可以检查如下文件扩展名:
if(mFile.Extension != "crdownload")
{
...
}
MSDN文件系统信息扩展
第2版:使用数组列表代替:
List<String> ignoreExt = new List<String>() { "crdownload","download", "temp", "tmp"};
然后你可以这样检查你的分机:
if (ignoreExt.Where(x => x == mFile.Extension).ToList().Count == 0)
{
mFile.MoveTo(dirInfo + "''" + mFile.Name);
// Clipboard.SetText(dirInfo + "''" + mFile.Name);
flag = false;
}
确保你是using System.Linq;
通过这种方式,您可以添加一些新的扩展,而无需if about无数行;(