FileChangeMonitor Class
Represents an object that monitors changes to files.
Assembly: System.Runtime.Caching (in System.Runtime.Caching.dll)
System.Runtime.Caching::ChangeMonitor
System.Runtime.Caching::FileChangeMonitor
System.Runtime.Caching::HostFileChangeMonitor
| Name | Description | |
|---|---|---|
![]() | FileChangeMonitor() | Initializes a new instance of the FileChangeMonitor class. This constructor is called from constructors in derived classes in order to initialize the base class. |
| Name | Description | |
|---|---|---|
![]() | FilePaths | Gets a collection that contains the paths of files that are monitored for changes. |
![]() | HasChanged | Gets a value that indicates that the state that is monitored by the ChangeMonitor class has changed.(Inherited from ChangeMonitor.) |
![]() | IsDisposed | Gets a value that indicates that the derived instance of a ChangeMonitor class is disposed.(Inherited from ChangeMonitor.) |
![]() | LastModified | Gets a value that indicates the last time that a file that is being monitored was changed. |
![]() | UniqueId | Gets a value that represents the ChangeMonitor class instance.(Inherited from ChangeMonitor.) |
| Name | Description | |
|---|---|---|
![]() | Dispose() | Releases all resources that are used by the current instance of the ChangeMonitor class.(Inherited from ChangeMonitor.) |
![]() | Dispose(Boolean) | Releases all managed and unmanaged resources and any references to the ChangeMonitor instance. This overload must be implemented by derived change-monitor classes. (Inherited from ChangeMonitor.) |
![]() | Equals(Object^) | Determines whether the specified object is equal to the current object.(Inherited from Object.) |
![]() | Finalize() | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.) |
![]() | GetHashCode() | Serves as the default hash function. (Inherited from Object.) |
![]() | GetType() | |
![]() | InitializationComplete() | Called from the constructor of derived classes to indicate that initialization is finished. (Inherited from ChangeMonitor.) |
![]() | MemberwiseClone() | |
![]() | NotifyOnChanged(OnChangedCallback^) | Called by Cache implementers to register a callback and notify an ObjectCache instance through the OnChangedCallback delegate when a dependency has changed. (Inherited from ChangeMonitor.) |
![]() | OnChanged(Object^) | Called by derived classes to raise the event when a dependency changes. (Inherited from ChangeMonitor.) |
![]() | ToString() | Returns a string that represents the current object.(Inherited from Object.) |
The FileChangeMonitor class is a base ChangeMonitor type for classes that monitor changes to files. To create a monitor for changes in the file system, you can inherit from this class.
Notes to Inheritors:
For information about the inheritance contract that must be followed, see the Notes for Inheritors section in the ChangeMonitor class overview.
The following example shows how to create a cache item that uses a HostFileChangeMonitor object to monitor the state of the source data (a file) on the file system. The HostFileChangeMonitor class inherits from the FileChangeMonitor class. The cache entry is defined using a CacheItemPolicy object that provides eviction and expiration details for the cache entry.
Available since 4.0
Any public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.


