EventLog.MaximumKilobytes EventLog.MaximumKilobytes EventLog.MaximumKilobytes EventLog.MaximumKilobytes Property

定義

取得或設定最大事件記錄檔大小 (以 KB 為單位)。Gets or sets the maximum event log size in kilobytes.

public:
 property long MaximumKilobytes { long get(); void set(long value); };
[System.ComponentModel.Browsable(false)]
[System.Runtime.InteropServices.ComVisible(false)]
public long MaximumKilobytes { get; set; }
member this.MaximumKilobytes : int64 with get, set
Public Property MaximumKilobytes As Long

屬性值

最大事件記錄檔大小 (以 KB 為單位)。The maximum event log size in kilobytes. 預設值為 512,表示最大記錄檔大小為 512 KB。The default is 512, indicating a maximum file size of 512 kilobytes.

例外狀況

指定的值小於 64 或大於 4194240,或者不是 64 的偶數倍數。The specified value is less than 64, or greater than 4194240, or not an even multiple of 64.

這個 Log 值不是有效的記錄檔名稱。The Log value is not a valid log name.

-或--or- 無法在目標電腦上開啟事件記錄檔的登錄機碼。The registry key for the event log could not be opened on the target computer.

範例

下列範例會列舉本機電腦上定義的事件記錄檔,並顯示每個事件記錄檔的設定詳細資料。The following example enumerates the event logs defined on the local computer, and displays configuration details for each event log.

void DisplayEventLogProperties()
{
   
   // Iterate through the current set of event log files,
   // displaying the property settings for each file.
   array<EventLog^>^eventLogs = EventLog::GetEventLogs();
   System::Collections::IEnumerator^ myEnum = eventLogs->GetEnumerator();
   while ( myEnum->MoveNext() )
   {
      EventLog^ e = safe_cast<EventLog^>(myEnum->Current);
      Int64 sizeKB = 0;
      Console::WriteLine();
      Console::WriteLine( "{0}:", e->LogDisplayName );
      Console::WriteLine( "  Log name = \t\t {0}", e->Log );
      Console::WriteLine( "  Number of event log entries = {0}", e->Entries->Count );
      
      // Determine if there is a file for this event log.
      RegistryKey ^ regEventLog = Registry::LocalMachine->OpenSubKey( String::Format( "System\\CurrentControlSet\\Services\\EventLog\\{0}", e->Log ) );
      if ( regEventLog )
      {
         Object^ temp = regEventLog->GetValue( "File" );
         if ( temp != nullptr )
         {
            Console::WriteLine( "  Log file path = \t {0}", temp );
            FileInfo^ file = gcnew FileInfo( temp->ToString() );
            
            // Get the current size of the event log file.
            if ( file->Exists )
            {
               sizeKB = file->Length / 1024;
               if ( (file->Length % 1024) != 0 )
               {
                  sizeKB++;
               }
               Console::WriteLine( "  Current size = \t {0} kilobytes", sizeKB );
            }
         }
         else
         {
            Console::WriteLine( "  Log file path = \t <not set>" );
         }
      }
      
      // Display the maximum size and overflow settings.
      sizeKB = e->MaximumKilobytes;
      Console::WriteLine( "  Maximum size = \t {0} kilobytes", sizeKB );
      Console::WriteLine( "  Overflow setting = \t {0}", e->OverflowAction );
      switch ( e->OverflowAction )
      {
         case OverflowAction::OverwriteOlder:
            Console::WriteLine( "\t Entries are retained a minimum of {0} days.", e->MinimumRetentionDays );
            break;

         case OverflowAction::DoNotOverwrite:
            Console::WriteLine( "\t Older entries are not overwritten." );
            break;

         case OverflowAction::OverwriteAsNeeded:
            Console::WriteLine( "\t If number of entries equals max size limit, a new event log entry overwrites the oldest entry." );
            break;

         default:
            break;
      }
   }
}


static void DisplayEventLogProperties()
{
    // Iterate through the current set of event log files,
    // displaying the property settings for each file.

    EventLog[] eventLogs = EventLog.GetEventLogs();
    foreach (EventLog e in eventLogs)
    {
        Int64 sizeKB = 0;

        Console.WriteLine();
        Console.WriteLine("{0}:", e.LogDisplayName);
        Console.WriteLine("  Log name = \t\t {0}", e.Log); 

        Console.WriteLine("  Number of event log entries = {0}", e.Entries.Count.ToString());
                    
        // Determine if there is an event log file for this event log.
        RegistryKey regEventLog = Registry.LocalMachine.OpenSubKey("System\\CurrentControlSet\\Services\\EventLog\\" + e.Log);
        if (regEventLog != null)
        {
            Object temp = regEventLog.GetValue("File");
            if (temp != null)
            {
                Console.WriteLine("  Log file path = \t {0}", temp.ToString());
                FileInfo file = new FileInfo(temp.ToString());

                // Get the current size of the event log file.
                if (file.Exists)
                {
                    sizeKB = file.Length / 1024;
                    if ((file.Length % 1024) != 0)
                    {
                        sizeKB++;
                    }
                    Console.WriteLine("  Current size = \t {0} kilobytes", sizeKB.ToString());
                }
            }
            else
            {
                Console.WriteLine("  Log file path = \t <not set>");
            }
        }
                    
        // Display the maximum size and overflow settings.

        sizeKB = e.MaximumKilobytes;
        Console.WriteLine("  Maximum size = \t {0} kilobytes", sizeKB.ToString());
        Console.WriteLine("  Overflow setting = \t {0}", e.OverflowAction.ToString());

        switch (e.OverflowAction)
        {
            case OverflowAction.OverwriteOlder:
                Console.WriteLine("\t Entries are retained a minimum of {0} days.", 
                    e.MinimumRetentionDays);
                break;
            case OverflowAction.DoNotOverwrite:
                Console.WriteLine("\t Older entries are not overwritten.");
                break;
            case OverflowAction.OverwriteAsNeeded:
                Console.WriteLine("\t If number of entries equals max size limit, a new event log entry overwrites the oldest entry.");
                break;
            default:
                break;
        }
    }
}
Shared Sub DisplayEventLogProperties()

   ' Iterate through the current set of event log files,
   ' displaying the property settings for each file.
   Dim eventLogs As EventLog() = EventLog.GetEventLogs()
   
   Dim e As EventLog
   For Each e In  eventLogs
      Dim sizeKB As Int64 = 0
      
      Console.WriteLine()
      Console.WriteLine("{0}:", e.LogDisplayName)
      Console.WriteLine("  Log name = " + ControlChars.Tab _
                          + ControlChars.Tab + " {0}", e.Log)

      Console.WriteLine("  Number of event log entries = {0}", e.Entries.Count.ToString())
      
      ' Determine if there is an event log file for this event log.
      Dim regEventLog As RegistryKey
      regEventLog = Registry.LocalMachine.OpenSubKey( _
             ("System\CurrentControlSet\Services\EventLog\" + e.Log))

      If Not (regEventLog Is Nothing) Then

         Dim temp As Object = regEventLog.GetValue("File")
         If Not (temp Is Nothing) Then

            Console.WriteLine("  Log file path = " + ControlChars.Tab _
                                  + " {0}", temp.ToString())
            Dim file As New FileInfo(temp.ToString())
            
            ' Get the current size of the event log file.
            If file.Exists Then
               sizeKB = file.Length / 1024
               If file.Length Mod 1024 <> 0 Then
                  sizeKB += 1
               End If
               Console.WriteLine("  Current size = " + ControlChars.Tab _
                          + " {0} kilobytes", sizeKB.ToString())
            End If
         Else
            Console.WriteLine("  Log file path = " + ControlChars.Tab _
                             + " <not set>")
         End If
      End If
      
      ' Display the maximum size and overflow settings.
      sizeKB = e.MaximumKilobytes
      Console.WriteLine("  Maximum size = " + ControlChars.Tab _
                         + " {0} kilobytes", sizeKB.ToString())
      Console.WriteLine("  Overflow setting = " + ControlChars.Tab _
                         + " {0}", e.OverflowAction.ToString())
      
      Select Case e.OverflowAction
         Case OverflowAction.OverwriteOlder
            Console.WriteLine(ControlChars.Tab + _
                 " Entries are retained a minimum of {0} days.", _
                 e.MinimumRetentionDays)
         Case OverflowAction.DoNotOverwrite
            Console.WriteLine(ControlChars.Tab + _
                 " Older entries are not overwritten.")
         Case OverflowAction.OverwriteAsNeeded
            Console.WriteLine(ControlChars.Tab + _
                 " If number of entries equals max size limit, a new event log entry overwrites the oldest entry.")
         Case Else
      End Select

   Next e

End Sub

備註

MaximumKilobytes屬性代表事件記錄檔的大小限制。The MaximumKilobytes property represents the size limit of the event log file. 當事件記錄檔達到大小限制時,設定OverflowAction的值會決定是否捨棄新的專案,或新的專案是否會覆寫舊的專案。When the event log reaches the size limit, the configured OverflowAction value determines whether new entries are discarded, or whether new entries overwrite older entries.

注意

此屬性代表這個實例所表示之事件記錄檔的設定。This property represents a configuration setting for the event log represented by this instance. 當事件記錄檔達到其大小上限時,此屬性會指定作業系統如何處理所有登錄事件記錄檔的事件來源所寫入的新專案。When the event log reaches its maximum size, this property specifies how the operating system handles new entries written by all event sources registered for the event log.

安全性

EventLogPermission
用於管理電腦上的事件記錄檔資訊。for administering event log information on the computer. 相關聯的列舉:AdministerAssociated enumeration: Administer

適用於

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