EventLog.LogDisplayName 属性
定义
重要
一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。 对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。
获取事件日志的友好名称。
public:
property System::String ^ LogDisplayName { System::String ^ get(); };[System.ComponentModel.Browsable(false)]
public string? LogDisplayName { get; }[System.ComponentModel.Browsable(false)]
public string LogDisplayName { get; }[<System.ComponentModel.Browsable(false)>]
member this.LogDisplayName : stringPublic ReadOnly Property LogDisplayName As String属性值
表示系统事件查看器中的事件日志的名称。
- 属性
例外
此计算机的注册表中不存在指定的 Log 指定项。
示例
以下示例枚举在本地计算机上定义的事件日志，并显示 LogDisplayName 每个事件日志的事件日志。
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
注解
注释
在Windows Vista及更高版本中，用户无权访问安全日志。 如果以用户身份运行Windows Vista或更高版本，则尝试访问安全日志中事件的显示名称时，将收到 SecurityException。
在 Windows Vista 及更高版本中，用户帐户控制（UAC）确定用户的权限。 如果你是内置管理员组的成员，则分配有两个运行时访问令牌：标准用户访问令牌和管理员访问令牌。 默认情况下，你处于标准用户角色。 若要执行访问安全日志的代码，必须先将特权从标准用户提升到管理员。 在启动应用程序时，可以右键单击应用程序图标并指示要以管理员身份运行。
