Gets or sets the filter string used to determine what files are monitored in a directory.
Assembly: System (in System.dll)
[<SettingsBindableAttribute(true)>] [<IODescriptionAttribute("FSW_Filter")>] [<TypeConverterAttribute("System.Diagnostics.Design.StringValueConverter, System.Design, Version=220.127.116.11, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")>] member Filter : string with get, set
Property ValueType: System.String
The filter string. The default is "*.*" (Watches all files.)
To watch changes in all files, set the property to an empty string (""). To watch a specific file, set the property to the file name. For example, to watch for changes in the file MyDoc.txt, set the property to "MyDoc.txt". You can also watch for changes in a certain type of file. For example, to watch for changes in any text files, set the property to "*.txt". Use of multiple filters such as "*.txt|*.doc" is not supported.
The property can be changed after the FileSystemWatcher object has started receiving events.
accepts wildcards for matching files, as shown in the following examples.
Watches the following files
All files (default). An empty string ("") also watches all files.
All files with a "txt" extension.
All files ending in "recipe" with a "doc" extension.
All files beginning with "win" with an "xml" extension.
Matches the following:
Sales July 2001.xlsSales Aug 2002.xlsSales March 2004.xls
but does not match:
Sales Nov 1999.xls
Watches only MyReport.doc
The following example creates a FileSystemWatcher to watch the directory specified at run time. The component is set to watch for changes in LastWrite and LastAccess time, the creation, deletion, or renaming of text files in the directory. If a file is changed, created, or deleted, the path to the file prints to the console. When a file is renamed, the old and new paths print to the console.
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.