EventLogWatcher Class

Definition

Namespace:

System.Diagnostics.Eventing.Reader

Assembly:

System.Diagnostics.EventLog.dll

Allows you to subscribe to incoming events. Each time a desired event is published to an event log, the EventRecordWritten event is raised, and the method that handles this event will be executed.

public ref class EventLogWatcher : IDisposable

public class EventLogWatcher : IDisposable

type EventLogWatcher = class
    interface IDisposable

Public Class EventLogWatcher
Implements IDisposable

Inheritance

Object

EventLogWatcher

Implements

IDisposable

Examples

For example code using this class, see How to: Subscribe to Events in an Event Log.

Remarks

The instances of this class are created from EventLogQuery objects, which specify a query for the event subscription. When an event is logged that matches the criteria expressed in the query, then the EventRecordWritten event is raised.

Constructors

EventLogWatcher(EventLogQuery, EventBookmark, Boolean)	Initializes a new instance of the EventLogWatcher class by specifying an event query, a bookmark that is used as starting position for the query, and a Boolean value that determines whether to read the events that already exist in the event log.
EventLogWatcher(EventLogQuery, EventBookmark)	Initializes a new instance of the EventLogWatcher class by specifying an event query and a bookmark that is used as starting position for the query.
EventLogWatcher(EventLogQuery)	Initializes a new instance of the EventLogWatcher class by specifying an event query.
EventLogWatcher(String)	Initializes a new instance of the EventLogWatcher class by specifying the name or path to an event log.

Properties

Enabled

Gets or sets a value that indicates whether this object starts delivering events to the event delegate.

Methods

Dispose()	Releases all the resources used by this object.
Dispose(Boolean)	Releases the unmanaged resources used by this object, and optionally releases the managed resources.
Equals(Object)	Determines whether the specified object is equal to the current object. (Inherited from Object)
GetHashCode()	Serves as the default hash function. (Inherited from Object)
GetType()	Gets the Type of the current instance. (Inherited from Object)
MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
ToString()	Returns a string that represents the current object. (Inherited from Object)

Events

EventRecordWritten

Allows setting a delegate (event handler method) that gets called every time an event is published that matches the criteria specified in the event query for this object.

See also

• Technology Summary for Reading and Managing Event Logs
• Event Log Scenarios