EventLog.LogDisplayName 屬性
定義
重要
部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。
取得事件記錄檔的易記名稱。
public:
property System::String ^ LogDisplayName { System::String ^ get(); };[System.ComponentModel.Browsable(false)]
public string LogDisplayName { get; }[<System.ComponentModel.Browsable(false)>]
member this.LogDisplayName : stringPublic ReadOnly Property LogDisplayName As String屬性值
名稱，表示系統的事件檢視器中的事件記錄檔。
- 屬性
例外狀況
指定的 Log 不存在這部電腦的登錄中。
範例
下列範例會列舉本機計算機上定義的事件記錄檔，並顯示 LogDisplayName 每個事件記錄檔的 。
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
注意
在 Windows Vista 和更新版本中，用戶沒有存取安全性記錄的許可權。 如果您是以使用者身分執行 Windows Vista 或更新版本，當您嘗試存取安全性記錄檔中事件的顯示名稱時，將會收到 SecurityException 。
在 Windows Vista (含) 以後版本中，使用者帳戶控制 (UAC) 會判斷使用者的權限。 如果您是內建 Administrators 群組的成員，系統會將兩個執行階段存取語彙基元 (Token) 指派給您：標準使用者存取語彙基元及管理員存取語彙基元。 根據預設，您會屬於標準使用者角色。 若要執行可存取安全性記錄的程式代碼，您必須先將許可權從標準使用者提升為系統管理員。 您可以在啟動應用程式時，以滑鼠右鍵按一下應用程式圖示，並指出您想要以系統管理員身分執行，藉此提高為系統管理員權限。
