EntryWrittenEventArgs Class
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EntryWrittenEventArgs Class


Provides data for the EntryWritten event.

Namespace:   System.Diagnostics
Assembly:  System (in System.dll)


public class EntryWrittenEventArgs : EventArgs


Initializes a new instance of the EntryWrittenEventArgs class.


Initializes a new instance of the EntryWrittenEventArgs class with the specified event log entry.


Gets the event log entry that was written to the log.


Determines whether the specified object is equal to the current object.(Inherited from Object.)


Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)


Serves as the default hash function. (Inherited from Object.)


Gets the Type of the current instance.(Inherited from Object.)


Creates a shallow copy of the current Object.(Inherited from Object.)


Returns a string that represents the current object.(Inherited from Object.)

The following example demonstrates the EntryWrittenEventArgs constructor. It creates a custom EventLog object and writes an entry into it. Then it creates an EntryWrittenEventArgs object using the first entry in the custom EventLog. This object is used to notify a message.

using System;
using System.Diagnostics;

class MySample
    public static void Main()
            EventLog myNewLog = new EventLog();
            myNewLog.Log = "MyNewLog";
            myNewLog.Source = "MySource";
            // Create the source if it does not exist already.
            if (!EventLog.SourceExists("MySource"))
                // An event log source should not be created and immediately used.
                // There is a latency time to enable the source, it should be created
                // prior to executing the application that uses the source.
                // Execute this sample a second time to use the new source.
                EventLog.CreateEventSource("MySource", "MyNewLog");
                Console.WriteLine("Exiting, execute the application a second time to use the source.");
                // The source is created.  Exit the application to allow it to be registered.
            // Write an entry to the EventLog.
            myNewLog.WriteEntry("The Latest entry in the Event Log");
            int myEntries = myNewLog.Entries.Count;
            EventLogEntry entry = myNewLog.Entries[myEntries - 1];
            EntryWrittenEventArgs myEntryEventArgs =
                                 new EntryWrittenEventArgs();
            MyOnEntry(myNewLog, myEntryEventArgs);
        catch (Exception e)
            Console.WriteLine("Exception Raised" + e.Message);
    protected static void MyOnEntry(Object source, EntryWrittenEventArgs e)
        if (e.Entry == null)
            Console.WriteLine("A new entry is written in MyNewLog.");

.NET Framework
Available since 1.1

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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