FileSystemWatcher and ReadDirectoryChangesW vs. CBFS Filter

CBFS Filter is a developer component that monitors and controls disk activity, tracks file and directory operations, alters file data, encrypts files, and much more. CBFS Filter includes a .NET class that emulates FileSystemWatcher, so you can combine the simplicity of FileSystemWatcher with the power of CBFS Filter.

Features Windows CBFS Filter
File system support NTFS or network drive. No FAT or FAT32 support. Any file system including any local or network file system.
Permissions required SeBackupPrivilege and read access to the folder being monitored. The SeBackupPrivilege permission is usually available for administrator accounts only. None. CBFS Filter doesn't require any special permissions and can be run under limited accounts. Installation of the CBFS Filter driver requires administrative rights.
Windows security restrictions Followed. You won't get proper notification on files you don't have access to. Bypassed by the driver. Your application gets notifications about all file and directory events and doesn't care about security permissions set on files and directories.
Operation mode Asynchronous (you only get notifications). Synchronous or Asynchronous (you can intercept the request and modify it or prevent it from being processed).
Types of events tracked Creation, Deletion, Modification, Renaming. All types of file system events (including access and directory enumeration) are tracked.
Reliability Not reliable (some notifications can be omited or lost). Reliable (you get notifications on all events that happen when your application is running).

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