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FileSystemWatcher Constructor (String, String)

Initializes a new instance of the FileSystemWatcher class, given the specified directory and type of files to monitor.

Namespace: System.IO
Assembly: System (in system.dll)

public FileSystemWatcher (
	string path,
	string filter
)
public FileSystemWatcher (
	String path, 
	String filter
)
public function FileSystemWatcher (
	path : String, 
	filter : String
)

Parameters

path

The directory to monitor, in standard or Universal Naming Convention (UNC) notation.

filter

The type of files to watch. For example, "*.txt" watches for changes to all text files.

Exception typeCondition

ArgumentNullException

The path parameter is a null reference (Nothing in Visual Basic).

-or-

The filter parameter is a null reference (Nothing in Visual Basic).

ArgumentException

The path parameter is an empty string ("").

-or-

The path specified through the path parameter does not exist.

NoteNote

The component will not watch the specified directory until the Path is set, and EnableRaisingEvents is true.

The component can watch files on your personal computer, a network drive, or a remote computer.

You cannot watch a remote computer that does not have Windows NT or Windows 2000. You cannot watch a remote Windows NT 4.0 computer from a Windows NT 4.0 computer.

Windows 98, Windows 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

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