File System Watcher and Task Monitor

Abstract

This Project “File System Watcher and Task Monitor” is system based software developed with VB.Net .This project is very user friendly. Overall goal of this project is mainly used for program developers. No such existing system has these all options. The main advantage of this project is that it is very user friendly. This system does not aim any specific user. The task will detect changes to existing files as well as new files, both actions will cause the file to be found when available. A file is available when the task can open it exclusively. Advanced warning of a file having been detected, but not yet available is returned through the OnFileWatcherEvent. This event does not always coincide with the completion of the task, as completion and the OnFileFoundEvent is delayed until the file is ready for use. This event indicates that a file has been detected, and that file will now be monitored until it becomes available. The task will only detect and report on the first file that is created or changes, any subsequent changes will be ignored.

Existing System

Before developing any computerized system it is important to examine the problems in the existing system and the additional information that should be fulfilled in the proposed system. In some systems, File System Watcher reports changes to files using the short file name format. This class contains a link demand and an inheritance demand at the class level that applies to all members. A Security Exception is thrown when either the immediate caller or the derived class does not have full-trust permission.

Proposed System

The Windows operating system notifies your component of file changes in a buffer created by the File System Watcher. If there are many changes in a short time, the buffer can overflow. This causes the component to lose track of changes in the directory, and it will only provide blanket notification. Increasing the size of the buffer with the Internal Buffer Size property is expensive; as it comes from non-paged memory that cannot be swapped out to disk, so keep the buffer as small yet large enough to not miss any file change events. To avoid a buffer overflow, use the Notify Filter and Include Subdirectories properties so you can filter out unwanted change notifications. Hidden files are not ignored.

Architecture