windows FileSystemWatcher 类 - 排除目录
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FileSystemWatcher Class - Excluding Directories
提问by Ken
I am currently trying to exclude directories with the FileSystemWatcher class, although I have used this:
我目前正在尝试使用 FileSystemWatcher 类排除目录，尽管我已经使用了这个：
FileWatcher.Filter = "C:\$Recycle.Bin";
and
和
FileWatcher.Filter = "$Recycle.Bin";
It compiles ok, but no results are shown when I try this.
它编译正常，但是当我尝试这个时没有显示任何结果。
If I take the filter out, all files load fine, code is below:
如果我去掉过滤器，所有文件都可以正常加载，代码如下：
static void Main(string[] args)
{
string DirPath = "C:\";
FileSystemWatcher FileWatcher = new FileSystemWatcher(DirPath);
FileWatcher.IncludeSubdirectories = true;
FileWatcher.Filter = "*.exe";
// FileWatcher.Filter = "C:\$Recycle.Bin";
// FileWatcher.Changed += new FileSystemEventHandler(FileWatcher_Changed);
FileWatcher.Created += new FileSystemEventHandler(FileWatcher_Created);
// FileWatcher.Deleted += new FileSystemEventHandler(FileWatcher_Deleted);
// FileWatcher.Renamed += new RenamedEventHandler(FileWatcher_Renamed);
FileWatcher.EnableRaisingEvents = true;
Console.ReadKey();
}
回答by Tomas Voracek
You probably haven't read http://msdn.microsoft.com/en-us/library/system.io.filesystemwatcher.filter.aspx. You cannot exclude anything with Filter property. It only includes objects matching filter.
您可能没有阅读http://msdn.microsoft.com/en-us/library/system.io.filesystemwatcher.filter.aspx。您不能使用 Filter 属性排除任何内容。它只包括匹配过滤器的对象。
If you want exclude something, do it in events fired by FSW.
如果您想排除某些内容，请在 FSW 触发的事件中进行。
回答by Eternal21
Determine if the file is a directory in your event handler, and do nothing then:
确定文件是否是事件处理程序中的目录，然后什么都不做：
private void WatcherOnCreated(object sender, FileSystemEventArgs fileSystemEventArgs)
{
if (File.GetAttributes(fileSystemEventArgs.FullPath).HasFlag(FileAttributes.Directory))
return; //ignore directories, only process files
//TODO: Your code handling files...
}
