EventLogEntryCollection Classe

Définition

public ref class EventLogEntryCollection : System::Collections::ICollection

public class EventLogEntryCollection : System.Collections.ICollection

type EventLogEntryCollection = class
    interface ICollection
    interface IEnumerable

Public Class EventLogEntryCollection
Implements ICollection

Héritage

Object

EventLogEntryCollection

Implémente

ICollection IEnumerable

Exemples

L’exemple suivant montre comment obtenir des informations de journal des événements à partir d’un EventLogEntryCollection objet .

#using <System.dll>

using namespace System;
using namespace System::Collections;
using namespace System::Diagnostics;
int main()
{
   try
   {
      String^ myLogName = "MyNewLog";
      
      // Check if the source exists.
      if (  !EventLog::SourceExists( "MySource" ) )
      {
         //Create source.
         EventLog::CreateEventSource( "MySource", myLogName );
         Console::WriteLine( "Creating EventSource" );
      }
      else
            myLogName = EventLog::LogNameFromSourceName( "MySource", "." );
      
      // Get the EventLog associated if the source exists.
      // Create an EventLog instance and assign its source.
      EventLog^ myEventLog2 = gcnew EventLog;
      myEventLog2->Source = "MySource";
      
      // Write an informational entry to the event log.
      myEventLog2->WriteEntry( "Successfully created a new Entry in the Log" );
      myEventLog2->Close();
      
      // Create a new EventLog Object*.
      EventLog^ myEventLog1 = gcnew EventLog;
      myEventLog1->Log = myLogName;
      
      // Obtain the Log Entries of S"MyNewLog".
      EventLogEntryCollection^ myEventLogEntryCollection = myEventLog1->Entries;
      myEventLog1->Close();
      Console::WriteLine( "The number of entries in 'MyNewLog' = {0}", myEventLogEntryCollection->Count );
      
      // Display the 'Message' property of EventLogEntry.
      for ( int i = 0; i < myEventLogEntryCollection->Count; i++ )
      {
         Console::WriteLine( "The Message of the EventLog is : {0}", myEventLogEntryCollection[ i ]->Message );
      }
      
      // Copy the EventLog entries to Array of type EventLogEntry.
      array<EventLogEntry^>^myEventLogEntryArray = gcnew array<EventLogEntry^>(myEventLogEntryCollection->Count);
      myEventLogEntryCollection->CopyTo( myEventLogEntryArray, 0 );
      IEnumerator^ myEnumerator = myEventLogEntryArray->GetEnumerator();
      while ( myEnumerator->MoveNext() )
      {
         EventLogEntry^ myEventLogEntry = safe_cast<EventLogEntry^>(myEnumerator->Current);
         Console::WriteLine( "The LocalTime the Event is generated is {0}", myEventLogEntry->TimeGenerated );
      }
   }
   catch ( Exception^ e ) 
   {
      Console::WriteLine( "Exception: {0}", e->Message );
   }
}

using System;
using System.Collections;
using System.Diagnostics;

class EventLogEntryCollection_Item
{
    public static void Main()
    {
        try
        {
            string myLogName = "MyNewLog";
            // Check if the source exists.
            if (!EventLog.SourceExists("MySource"))
            {
                // Create the source.
                // 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", myLogName);
                Console.WriteLine("Creating EventSource");
                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.
                return;
            }
            else
            {
                // Get the EventLog associated if the source exists.
                myLogName = EventLog.LogNameFromSourceName("MySource", ".");
            }

            // Create an EventLog instance and assign its source.
            EventLog myEventLog2 = new EventLog();
            myEventLog2.Source = "MySource";
            // Write an informational entry to the event log.
            myEventLog2.WriteEntry("Successfully created a new Entry in the Log");
            myEventLog2.Close();
            // Create a new EventLog object.
            EventLog myEventLog1 = new EventLog();
            myEventLog1.Log = myLogName;

            // Obtain the Log Entries of "MyNewLog".
            EventLogEntryCollection myEventLogEntryCollection =
               myEventLog1.Entries;
            myEventLog1.Close();
            Console.WriteLine("The number of entries in 'MyNewLog' = "
               + myEventLogEntryCollection.Count);

            // Display the 'Message' property of EventLogEntry.
            for (int i = 0; i < myEventLogEntryCollection.Count; i++)
            {
                Console.WriteLine("The Message of the EventLog is :"
                   + myEventLogEntryCollection[i].Message);
            }

            // Copy the EventLog entries to Array of type EventLogEntry.
            EventLogEntry[] myEventLogEntryArray =
               new EventLogEntry[myEventLogEntryCollection.Count];
            myEventLogEntryCollection.CopyTo(myEventLogEntryArray, 0);
            IEnumerator myEnumerator = myEventLogEntryArray.GetEnumerator();
            while (myEnumerator.MoveNext())
            {
                EventLogEntry myEventLogEntry = (EventLogEntry)myEnumerator.Current;
                Console.WriteLine("The LocalTime the Event is generated is "
                   + myEventLogEntry.TimeGenerated);
            }
        }
        catch (Exception e)
        {
            Console.WriteLine("Exception:{0}", e.Message);
        }
    }
}

Imports System.Collections
Imports System.Diagnostics

Class EventLogEntryCollection_Item
   Public Shared Sub Main()
      Try
         Dim myLogName As String = "MyNewlog"
         ' Check if the source exists.
         If Not EventLog.SourceExists("MySource") Then
            'Create source.
            EventLog.CreateEventSource("MySource", myLogName)
            Console.WriteLine("Creating EventSource")
         ' Get the EventLog associated if the source exists.
         Else
            myLogName = EventLog.LogNameFromSourceName("MySource", ".")
         End If
         ' Create an EventLog instance and assign its source.
         Dim myEventLog2 As New EventLog()
         myEventLog2.Source = "MySource"
         ' Write an informational entry to the event log.
         myEventLog2.WriteEntry("Successfully created a new Entry in the Log")
         myEventLog2.Close()
         ' Create a new EventLog object.
         Dim myEventLog1 As New EventLog()
         myEventLog1.Log = myLogName

         ' Obtain the Log Entries of "MyNewLog".
         Dim myEventLogEntryCollection As EventLogEntryCollection = myEventLog1.Entries
         myEventLog1.Close()
         Console.WriteLine("The number of entries in 'MyNewLog' = " + _
                           myEventLogEntryCollection.Count.ToString())

         ' Display the 'Message' property of EventLogEntry.
         Dim i As Integer
         For i = 0 To myEventLogEntryCollection.Count - 1
            Console.WriteLine("The Message of the EventLog is :" + _
                              myEventLogEntryCollection(i).Message)
         Next i
         ' Copy the EventLog entries to Array of type EventLogEntry.
         Dim myEventLogEntryArray(myEventLogEntryCollection.Count-1) As EventLogEntry
         myEventLogEntryCollection.CopyTo(myEventLogEntryArray, 0)
         Dim myEnumerator As IEnumerator = myEventLogEntryArray.GetEnumerator()
         While myEnumerator.MoveNext()
            Dim myEventLogEntry As EventLogEntry = CType(myEnumerator.Current, EventLogEntry)
            Console.WriteLine("The LocalTime the Event is generated is " + _
                                 myEventLogEntry.TimeGenerated)
         End While
      Catch e As Exception
         Console.WriteLine("Exception:{0}", e.Message.ToString())
      End Try
   End Sub
End Class

Remarques

Utilisez la EventLogEntryCollection classe lors de la lecture des entrées associées à un EventLog instance. La Entries propriété de la EventLog classe est une collection de toutes les entrées dans le journal des événements.

Étant donné que de nouvelles entrées sont ajoutées à la liste existante, le fait de parcourir la collection vous permet d’accéder aux entrées qui ont été créées après la création initiale du EventLogEntryCollection. Toutefois, une fois que vous avez consulté la liste entière, elle n’est pas mise à jour avec de nouvelles entrées.

Propriétés

Méthodes

Implémentations d’interfaces explicites

Méthodes d’extension

S’applique à

Voir aussi

• EventLog
• Entries