EventLog.EnableRaisingEvents プロパティとは何？わかりやすく解説 Weblio辞書

.NET Framework クラスライブラリリファレンス

索引トップ用語の索引ランキング

EventLog.EnableRaisingEvents プロパティ

EventLog が EntryWritten イベント通知を受信するかどうかを示す値を取得または設定します。

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

Visual Basic (宣言)

Public Property EnableRaisingEvents As
 Boolean

Visual Basic (使用法)

Dim instance As EventLog
Dim value As Boolean

value = instance.EnableRaisingEvents

instance.EnableRaisingEvents = value

public bool EnableRaisingEvents { get;
 set; }

C++

public:
property bool EnableRaisingEvents {
    bool get ();
    void set (bool value);
}

/** @property */
public boolean get_EnableRaisingEvents ()

/** @property */
public void set_EnableRaisingEvents (boolean
 value)

JScript

public function get EnableRaisingEvents
 () : boolean

public function set EnableRaisingEvents
 (value : boolean)

プロパティ値
エントリがログに書き込まれたときに EventLog が通知を受信する場合は true。それ以外の場合は false。

解説

エントリがログに書き込まれたときに EventLog がイベントを発生させるかどうかは、EnableRaisingEvents プロパティによって決定されます。このプロパティが true のとき、Log プロパティで指定されたログにエントリが書き込まれるたびに EntryWritten イベントを受信するコンポーネントが通知を受け取ります。EnableRaisingEvents が false のときはイベントは発生しません。

使用例

EntryWritten イベントを処理する例を次に示します。

Visual Basic

Option Strict
Option Explicit

Imports System
Imports System.Diagnostics
Imports System.Threading

Class MySample
    Public Shared Sub Main()
        
        Dim myNewLog As New
 EventLog()
        myNewLog.Log = "MyCustomLog"
        
        AddHandler myNewLog.EntryWritten, AddressOf
 MyOnEntryWritten
        myNewLog.EnableRaisingEvents = True
        
        
        Console.WriteLine("Press 'q' to quit.")
        ' Wait for the EntryWrittenEvent or a quit command.
        While Char.ToLower(Convert.ToChar(Console.Read()))<>"q"
            ' Wait.
        End While 
    End Sub ' Main
    
    Public Shared Sub MyOnEntryWritten(source
 As Object, e As EntryWrittenEventArgs)
        Console.WriteLine(("Written: " + e.Entry.Message))
    End Sub ' MyOnEntryWritten
End Class ' MySample

using System;
using System.Diagnostics;
using System.Threading;
              
class MySample{


    public static void Main(){
    
        EventLog myNewLog = new EventLog();
        myNewLog.Log = "MyCustomLog";                      
        
        myNewLog.EntryWritten += new EntryWrittenEventHandler(MyOnEntryWritten);
        myNewLog.EnableRaisingEvents = true;
        
        
        Console.WriteLine("Press \'q\' to quit.");
        // Wait for the EntryWrittenEvent or a quit command.
        while(Console.Read() != 'q'){
            // Wait.
        }                                                                       
                                                  
    }       

    public static void MyOnEntryWritten(Object
 source, EntryWrittenEventArgs e){
        Console.WriteLine("Written: " + e.Entry.Message);
    }
}

C++

#using <System.dll>

using namespace System;
using namespace System::Diagnostics;
using namespace System::Threading;
ref class MySample
{
public:
   static void MyOnEntryWritten( Object^ /*source*/,
 EntryWrittenEventArgs^ e )
   {
      Console::WriteLine( "Written: {0}", e->Entry->Message );
   }

};

int main()
{
   EventLog^ myNewLog = gcnew EventLog;
   myNewLog->Log = "MyCustomLog";
   myNewLog->EntryWritten += gcnew EntryWrittenEventHandler( MySample::MyOnEntryWritten
 );
   myNewLog->EnableRaisingEvents = true;
   Console::WriteLine( "Press \'q\' to quit." );
   
   // Wait for the EntryWrittenEvent or a quit command.
   while ( Console::Read() != 'q' )
   {
      
      // Wait.
   }
}

import System.*;
import System.Diagnostics.*;
import System.Threading.*;

class MySample
{
    public static void main(String[]
 args)
    {
        EventLog myNewLog = new EventLog();
        myNewLog.set_Log("MyCustomLog");
        myNewLog.add_EntryWritten(new EntryWrittenEventHandler(
            MyOnEntryWritten));
        myNewLog.set_EnableRaisingEvents(true);
        Console.WriteLine("Press \'q\' to quit.");

        // Wait for the EntryWrittenEvent or a quit command.
        while (Console.Read() != 'q') {
            // Wait.
        } 
    } //main

    private static void
 MyOnEntryWritten(Object source, EntryWrittenEventArgs e)
    {
        Console.WriteLine("Written: " + e.get_Entry().get_Message());
    } //MyOnEntryWritten
} //MySample