![]() Gets the method that throws the current exception.ĭetermines whether the specified object is equal to the current object. Gets a string representation of the immediate frames on the call stack. Gets or sets the name of the application or the object that causes the error. Gets a message that describes the current exception. Gets the Exception instance that caused the current exception. Gets or sets HRESULT, a coded numerical value that is assigned to a specific exception. Gets or sets a link to the help file associated with this exception. Gets a collection of key/value pairs that provide additional user-defined information about the exception. Initializes a new instance of the InternalBufferOverflowException class with the message to be displayed and the generated inner exception specified. InternalBufferOverflowException(String, Exception) Initializes a new instance of the InternalBufferOverflowException class with the error message to be displayed specified. Initializes a new, empty instance of the InternalBufferOverflowException class that is serializable using the specified SerializationInfo and StreamingContext objects. InternalBufferOverflowException(SerializationInfo, StreamingContext) Initializes a new default instance of the InternalBufferOverflowException class. However, increasing the size of the buffer is expensive, so keep the buffer as small as possible. You can also increase the size of the internal buffer through the FileSystemWatcher.InternalBufferSize property. To keep the buffer from overflowing, use the FileSystemWatcher.NotifyFilter and FileSystemWatcher.IncludeSubdirectories properties to filter out your unwanted change notifications. If there are many changes in a short time, the buffer can easily overflow, resulting in an exception being thrown, which essentially loses all changes. In a FileSystemWatcher, when you are notified of file changes, the system stores those changes in a buffer the component creates and passes to the Application Programming Interfaces (APIs). "The file system watcher experienced an internal buffer overflow: " _ ' that some of the file system events are being lost. The InternalBufferOverflowException error informs the application ' and internal buffer of the FileSystemWatcher is not large enough to handle this ' This can happen if Windows is reporting many file system events quickly If TypeOf e.GetException Is InternalBufferOverflowException Then ' Give more information if the error is due to an internal buffer overflow. Private Sub OnError(ByVal source As Object, ByVal e As ErrorEventArgs)Ĭonsole.WriteLine("The FileSystemWatcher has detected an error") ' This method is called when the FileSystemWatcher detects an error. Show that a file has been created, changed, or deleted.Ĭonsole.WriteLine("File ", e.OldFullPath, e.FullPath, wct.ToString()) Private static void OnChanged(object source, FileSystemEventArgs e) This method is called when a file is created, changed, or deleted. FileSystemWatcher needs to report an error.įsw.Error = new ErrorEventHandler(OnError) Ĭonsole.WriteLine("Press \'Enter\' to quit the sample.") Register a handler that gets called if the ![]() Register a handler that gets called when a file is renamed.įsw.Renamed = new RenamedEventHandler(OnRenamed) Register a handler that gets called when aįsw.Changed = new FileSystemEventHandler(OnChanged) įsw.Created = new FileSystemEventHandler(OnChanged) įsw.Deleted = new FileSystemEventHandler(OnChanged) | NotifyFilters.FileName |NotifyFilters.DirectoryName Watch for changes in LastAccess and LastWrite times, andįsw.NotifyFilter = NotifyFilters.LastAccess | NotifyFilters.LastWrite ![]() Create a FileSystemWatcher to monitor all files on drive C.įileSystemWatcher fsw = new FileSystemWatcher("C:\\") The example also shows how to properly receive error notifications. The following example shows how to create a FileSystemWatcher to monitor file changes (creates, deletes, renames, changes) occurring on a disk drive.
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