EventLogEntryCollection クラス

.NET Framework クラス ライブラリ リファレンス

EventLogEntryCollection クラス

EventLogEntry インスタンスのコレクションのサイズと列挙子を定義します。

名前空間: System.Diagnostics
アセンブリ: System (system.dll 内)
構文

Visual Basic (宣言)

Public Class EventLogEntryCollection
    Implements ICollection, IEnumerable

Visual Basic (使用法)

Dim instance As EventLogEntryCollection

C#

public class EventLogEntryCollection : ICollection,
 IEnumerable

C++

public ref class EventLogEntryCollection :
 ICollection, IEnumerable

J#

public class EventLogEntryCollection implements
 ICollection, IEnumerable

JScript

public class EventLogEntryCollection implements
 ICollection, IEnumerable

解説

EventLogEntryCollection クラスは、EventLog インスタンスに関連付けられたエントリを読み取るときに使用します。EventLog クラスの Entries プロパティは、イベント ログのすべてのエントリのコレクションです。

新しいエントリは既存のリストの末尾に追加されるため、コレクションを順に処理していけば、最初に EventLogEntryCollection を作成した後で作成されたエントリにもアクセスできます。ただし、リスト全体を参照した後では、リストは新しいエントリで更新されません。

使用例

Visual Basic

Imports System
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 'Main
End Class 'EventLogEntryCollection_Item

C#

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 source.
            EventLog.CreateEventSource("MySource", myLogName);
            Console.WriteLine("Creating EventSource");
         }
         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);
      }
   }
}

C++

#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 );
   }
}

J#

import System.*;
import System.Collections.*;
import System.Diagnostics.*;

class EventLogEntryCollectionItem
{
    public static void main(String[]
 args)
    {
        try {
            String myLogName = "MyNewLog";

            // Check if the source exists.
            if (!(EventLog.SourceExists("MySource")))
 {
                //Create source.
                EventLog.CreateEventSource("MySource", myLogName);
                Console.WriteLine("Creating EventSource");
            }
            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.set_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.set_Log(myLogName);

            // Obtain the Log Entries of "MyNewLog".
            EventLogEntryCollection myEventLogEntryCollection = 
                myEventLog1.get_Entries();

            myEventLog1.Close();
            Console.WriteLine("The number of entries in 'MyNewLog'
 = " 
                + myEventLogEntryCollection.get_Count());

            // Display the 'Message' property of EventLogEntry.
            for (int i = 0; i < myEventLogEntryCollection.get_Count();
 i++) {
                Console.WriteLine("The Message of the EventLog is :"
                    + myEventLogEntryCollection.get_Item(i).get_Message());
            }
            // Copy the EventLog entries to Array of type EventLogEntry.
            EventLogEntry myEventLogEntryArray[] = 
                new EventLogEntry[myEventLogEntryCollection.get_Count()];

            myEventLogEntryCollection.CopyTo(myEventLogEntryArray, 0);
            IEnumerator myEnumerator = myEventLogEntryArray.GetEnumerator();
            while (myEnumerator.MoveNext()) {
                EventLogEntry myEventLogEntry = 
                    (EventLogEntry)myEnumerator.get_Current();
                Console.WriteLine("The LocalTime the Event is generated is "
 
                    + myEventLogEntry.get_TimeGenerated());
            }
        }
        catch (System.Exception e) {
            Console.WriteLine("Exception:{0}", e.get_Message());
        }
    } //main
} //EventLogEntryCollectionItem

継承階層

System.Object
  System.Diagnostics.EventLogEntryCollection

スレッド セーフ

この型の public static (Visual Basic では Shared) メンバはすべて、スレッド セーフです。インスタンス メンバの場合は、スレッド セーフであるとは限りません。

プラットフォーム

Windows 98, Windows 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。

バージョン情報

.NET Framework
サポート対象 : 2.0、1.1、1.0

参照

関連項目
EventLogEntryCollection メンバ
System.Diagnostics 名前空間
EventLog クラス
EventLog.Entries プロパティ