EventInstance.EntryType 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

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EventInstance.EntryType プロパティ

メモ : このプロパティは、.NET Framework version 2.0 で新しく追加されたものです。

イベントログエントリのイベントの種類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 EntryType As
 EventLogEntryType

Visual Basic (使用法)

Dim instance As EventInstance
Dim value As EventLogEntryType

value = instance.EntryType

instance.EntryType = value

public EventLogEntryType EntryType { get; set;
 }

C++

public:
property EventLogEntryType EntryType {
    EventLogEntryType get ();
    void set (EventLogEntryType value);
}

/** @property */
public EventLogEntryType get_EntryType ()

/** @property */
public void set_EntryType (EventLogEntryType
 value)

JScript

public function get EntryType
 () : EventLogEntryType

public function set EntryType
 (value : EventLogEntryType)

プロパティ値
イベントエントリの種類を示す EventLogEntryType 値。既定値は Information です。

例外

例外の種類	条件
InvalidEnumArgumentException	プロパティが有効な EventLogEntryType 値に設定されていません。

解説

各イベントは単一の種類からなり、アプリケーションがそのイベントをレポートするときに種類が示されます。イベントビューアは、このイベントの種類を使用して、イベントログのリストビューに表示するアイコンを決定します。

使用例

情報イベントエントリを書き込んだ後、EventInstance を再利用して、既存のイベントログに警告イベントのエントリを書き込むコード例を次に示します。イベントのメッセージテキストは、メッセージリソースファイルでリソース識別子を使用して指定されます。このコード例では、ソースに対して、対応するメッセージリソースファイルが登録されていることを前提にしています。

Visual Basic

' Ensure that the source has already been registered using
' EventLogInstaller or EventLog.CreateEventSource.
Dim sourceName as String
 = "SampleApplicationSource"
If EventLog.SourceExists(sourceName)
    
    ' Define an informational event with no category.
    ' The message identifier corresponds to the message text in the
    ' message resource file defined for the source.
    Dim myEvent As EventInstance = New
 EventInstance(UpdateCycleCompleteMsgId, 0)
    ' Write the event to the event log using the registered source.
    EventLog.WriteEvent(sourceName, myEvent)

    ' Reuse the event data instance for another event entry.
    ' Set the entry category and message identifiers for
    ' the appropriate resource identifiers in the resource files
    ' for the registered source.  Set the event type to Warning.

    myEvent.CategoryId = RefreshCategoryMsgId
    myEvent.EntryType = EventLogEntryType.Warning
    myEvent.InstanceId = ServerConnectionDownMsgId

    ' Write the event to the event log using the registered source.
    ' Insert the machine name into the event message text.
    EventLog.WriteEvent(sourceName, myEvent, Environment.MachineName)

Else 
    Console.WriteLine("Warning - event source {0} not registered",
 _
        sourceName)
End If

// Ensure that the source has already been registered using
// EventLogInstaller or EventLog.CreateEventSource.

string sourceName = "SampleApplicationSource";
if(EventLog.SourceExists(sourceName))
{
    // Define an informational event with no category.
    // The message identifier corresponds to the message text in the
    // message resource file defined for the source.
    EventInstance myEvent = new EventInstance(UpdateCycleCompleteMsgId,
 0);
    
    // Write the event to the event log using the registered source.
    EventLog.WriteEvent(sourceName, myEvent);

    // Reuse the event data instance for another event entry.
    // Set the entry category and message identifiers for
    // the appropriate resource identifiers in the resource files
    // for the registered source.  Set the event type to Warning.

    myEvent.CategoryId = RefreshCategoryMsgId;
    myEvent.EntryType = EventLogEntryType.Warning;
    myEvent.InstanceId = ServerConnectionDownMsgId;

    // Write the event to the event log using the registered source.
    // Insert the machine name into the event message text.
    EventLog.WriteEvent(sourceName, myEvent, Environment.MachineName);
}
else 
{
    Console.WriteLine("Warning - event source {0} not registered", 
        sourceName);
}

C++

// Ensure that the source has already been registered using
// EventLogInstaller or EventLog.CreateEventSource.
String^ sourceName = "SampleApplicationSource";
if ( EventLog::SourceExists( sourceName ) )
{
   // Define an informational event with no category.
   // The message identifier corresponds to the message text in the
   // message resource file defined for the source.
   EventInstance ^ myEvent = gcnew EventInstance( UpdateCycleCompleteMsgId,0 );

   // Write the event to the event log using the registered source.
   EventLog::WriteEvent( sourceName, myEvent, 0 );

   // Reuse the event data instance for another event entry.
   // Set the entry category and message identifiers for
   // the appropriate resource identifiers in the resource files
   // for the registered source.  Set the event type to Warning.
   myEvent->CategoryId = RefreshCategoryMsgId;
   myEvent->EntryType = EventLogEntryType::Warning;
   myEvent->InstanceId = ServerConnectionDownMsgId;

   // Write the event to the event log using the registered source.
   // Insert the machine name into the event message text.
   array<String^>^ss = {Environment::MachineName};
   EventLog::WriteEvent( sourceName, myEvent, ss );
}
else
{
   Console::WriteLine( "Warning - event source {0} not registered", sourceName
 );
}

コード例では、リソースライブラリ EventLogMsgs.dll に組み込まれた、次のメッセージテキストファイルが使用されています。メッセージリソースファイルは、メッセージテキストファイルから生成されます。メッセージテキストファイルでは、リソース識別子の他、カテゴリ、イベントメッセージ、およびパラメータ挿入文字列のテキストが定義されます。

; // EventLogMsgs.mc
; // ********************************************************

; // Use the following commands to build this file:

; //   mc -s EventLogMsgs.mc
; //   rc EventLogMsgs.rc
; //   link /DLL /SUBSYSTEM:WINDOWS /NOENTRY /MACHINE:x86 EventLogMsgs.Res 
; // ********************************************************

; // - Event categories -
; // Categories must be numbered consecutively starting at 1.
; // ********************************************************

MessageId=0x1
Severity=Success
SymbolicName=INSTALL_CATEGORY
Language=English
Installation
.

MessageId=0x2
Severity=Success
SymbolicName=QUERY_CATEGORY
Language=English
Database Query
.

MessageId=0x3
Severity=Success
SymbolicName=REFRESH_CATEGORY
Language=English
Data Refresh
.

; // - Event messages -
; // *********************************

MessageId = 1000
Severity = Success
Facility = Application
SymbolicName = AUDIT_SUCCESS_MESSAGE_ID_1000
Language=English
My application message text, in English, for message id 1000, called from %1.
.

MessageId = 1001
Severity = Warning
Facility = Application
SymbolicName = AUDIT_FAILED_MESSAGE_ID_1001
Language=English
My application message text, in English, for message id 1001, called from %1.
.


MessageId = 1002
Severity = Success
Facility = Application
SymbolicName = GENERIC_INFO_MESSAGE_ID_1002
Language=English
My generic information message in English, for message id 1002.
.


MessageId = 1003
Severity = Warning
Facility = Application
SymbolicName = GENERIC_WARNING_MESSAGE_ID_1003
Language=English
My generic warning message in English, for message id 1003, called from %1.
.


MessageId = 1004
Severity = Success
Facility = Application
SymbolicName = UPDATE_CYCLE_COMPLETE_MESSAGE_ID_1004
Language=English
The update cycle is complete for %%5002.
.


MessageId = 1005
Severity = Warning
Facility = Application
SymbolicName = SERVER_CONNECTION_DOWN_MESSAGE_ID_1005
Language=English
The refresh operation did not complete because the connection to server %1 could
 not be established.
.


; // - Event log display name -
; // ********************************************************


MessageId = 5001
Severity = Success
Facility = Application
SymbolicName = EVENT_LOG_DISPLAY_NAME_MSGID
Language=English
Sample Event Log
.



; // - Event message parameters -
; //   Language independent insertion strings
; // ********************************************************


MessageId = 5002
Severity = Success
Facility = Application
SymbolicName = EVENT_LOG_SERVICE_NAME_MSGID
Language=English
SVC_UPDATE.EXE
.