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FileSystemWatcher.SynchronizingObject Property

Gets or sets the object used to marshal the event handler calls issued as a result of a directory change.

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

public ISynchronizeInvoke SynchronizingObject { get; set; }
/** @property */
public ISynchronizeInvoke get_SynchronizingObject ()

/** @property */
public void set_SynchronizingObject (ISynchronizeInvoke value)

public function get SynchronizingObject () : ISynchronizeInvoke

public function set SynchronizingObject (value : ISynchronizeInvoke)

Not applicable.

Property Value

The ISynchronizeInvoke that represents the object used to marshal the event handler calls issued as a result of a directory change. The default is a null reference (Nothing in Visual Basic).

When SynchronizingObject is a null reference (Nothing in Visual Basic), methods handling the Changed, Created, Deleted, and Renamed events are called on a thread from the system thread pool. For more information on system thread pools, see ThreadPool.

When the Changed, Created, Deleted, and Renamed events are handled by a visual Windows Forms component, such as a Button, accessing the component through the system thread pool might not work, or may result in an exception. Avoid this by setting SynchronizingObject to a Windows Forms component, which causes the methods that handle the Changed, Created, Deleted, and Renamed events to be called on the same thread on which the component was created.

If the FileSystemWatcher is used inside Visual Studio 2005 in a Windows Forms designer, SynchronizingObject automatically sets to the control that contains the FileSystemWatcher. For example, if you place a FileSystemWatcher on a designer for Form1 (which inherits from Form) the SynchronizingObject property of FileSystemWatcher is set to the instance of Form1.

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

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

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