EventLogEntry Classe

Définition

public ref class EventLogEntry sealed : System::ComponentModel::Component, System::Runtime::Serialization::ISerializable

[System.Serializable]
public sealed class EventLogEntry : System.ComponentModel.Component, System.Runtime.Serialization.ISerializable

[<System.Serializable>]
type EventLogEntry = class
    inherit Component
    interface ISerializable

Public NotInheritable Class EventLogEntry
Inherits Component
Implements ISerializable

Héritage

Object

MarshalByRefObject

Component

EventLogEntry

Attributs

SerializableAttribute

Implémente

ISerializable

Exemples

L’exemple de code suivant illustre l’utilisation de la EventLogEntry classe. Dans cet exemple, une instruction utilise l’entrée switch de console pour rechercher les entrées du journal des événements pour le type d’événement spécifié. Si une correspondance est trouvée, les informations de source d’entrée de journal s’affichent sur la console.

using System;
using System.Diagnostics;
   class MyEventlogClass
   {
      public static void Main()
      {
         String myEventType=null;
         // Associate the instance of 'EventLog' with local System Log.
         EventLog myEventLog = new EventLog("System", ".");
         Console.WriteLine("1:Error");
         Console.WriteLine("2:Information");
         Console.WriteLine("3:Warning");
         Console.WriteLine("Select the Event Type");
         int myOption=Convert.ToInt32(Console.ReadLine());
         switch(myOption)
         {
            case 1:  myEventType="Error";
                     break;
            case 2:  myEventType="Information";
                     break;
            case 3:  myEventType="Warning";
                     break;
            default: break;
         }

            EventLogEntryCollection myLogEntryCollection=myEventLog.Entries;
            int myCount =myLogEntryCollection.Count;
            // Iterate through all 'EventLogEntry' instances in 'EventLog'.
            for(int i=myCount-1;i>-1;i--)
            {
               EventLogEntry myLogEntry = myLogEntryCollection[i];
               // Select the entry having desired EventType.
               if(myLogEntry.EntryType.ToString().Equals(myEventType))
               {
                  // Display Source of the event.
                  Console.WriteLine(myLogEntry.Source
                     +" was the source of last event of type "
                     +myLogEntry.EntryType);
                  return;
               }
            }
         }
   }

Imports System.Diagnostics

Class MyEventlogClass
   Public Shared Sub Main()
      Dim myEventType As String = Nothing
      ' Associate the instance of 'EventLog' with local System Log.
      Dim myEventLog As New EventLog("System", ".")
      Console.WriteLine("1:Error")
      Console.WriteLine("2:Information")
      Console.WriteLine("3:Warning")
      Console.WriteLine("Select the Event Type")
      Dim myOption As Integer = Convert.ToInt32(Console.ReadLine())
      Select Case myOption
         Case 1
            myEventType = "Error"
         Case 2
            myEventType = "Information"
         Case 3
            myEventType = "Warning"
         Case Else
      End Select

      Dim myLogEntryCollection As EventLogEntryCollection = myEventLog.Entries
      Dim myCount As Integer = myLogEntryCollection.Count
      ' Iterate through all 'EventLogEntry' instances in 'EventLog'.
      Dim i As Integer
      For i = myCount - 1 To 0 Step -1
         Dim myLogEntry As EventLogEntry = myLogEntryCollection(i)
         ' Select the entry having desired EventType.
         If myLogEntry.EntryType.ToString().Equals(myEventType) Then
            ' Display Source of the event.
            Console.WriteLine(myLogEntry.Source + " was the source of last "& _
                             "event of type " & myLogEntry.EntryType.ToString())
            Return
         End If
      Next 
   End Sub
End Class

Remarques

Vous ne créez généralement pas d’instances directement lors de l’utilisation de EventLogEntry la EventLog classe. Le Entries membre de la EventLog classe contient une collection d’instances que vous itérerez lors de EventLogEntry la lecture à l’aide du EventLogEntryCollection.Item[] membre d’index de classe.

Voir aussi

• EventLog
• EventLogEntryCollection
• EventInstance