Encapsulates a single record in the event log. This class cannot be inherited.
(in System.dll)
Visual Basic (Declaration)
<SerializableAttribute> _
Public NotInheritable Class EventLogEntry _
Inherits Component _
Implements ISerializable
Dim instance As EventLogEntry
[SerializableAttribute]
public sealed class EventLogEntry : Component,
ISerializable
[SerializableAttribute]
public ref class EventLogEntry sealed : public Component,
ISerializable
public final class EventLogEntry extends Component implements ISerializable
You usually will not create instances of EventLogEntry directly when working with the EventLog class. The Entries member of the EventLog class contains a collection of EventLogEntry instances, which you iterate over when reading by using the EventLogEntryCollection..::.Item class index member.
Windows 98, Windows Millennium Edition Platform Note: Event logs are not supported on Windows 98 or Windows Millennium.
The following code example demonstrates the use of the EventLogEntry class. In this example, a switch statement uses console input to search for event log entries for the specified event type. If a match is found, log entry source information is displayed at the console.
Imports System
Imports System.Diagnostics
Class MyEventlogClass
Public Shared Sub Main()
Dim myEventType As String = Nothing
' Associate the instance of 'EventLog' with local System Log.
Dim myEventLog As New EventLog("System", ".")
Console.WriteLine("1:Error")
Console.WriteLine("2:Information")
Console.WriteLine("3:Warning")
Console.WriteLine("Select the Event Type")
Dim myOption As Integer = Convert.ToInt32(Console.ReadLine())
Select Case myOption
Case 1
myEventType = "Error"
Case 2
myEventType = "Information"
Case 3
myEventType = "Warning"
Case Else
End Select
Dim myLogEntryCollection As EventLogEntryCollection = myEventLog.Entries
Dim myCount As Integer = myLogEntryCollection.Count
' Iterate through all 'EventLogEntry' instances in 'EventLog'.
Dim i As Integer
For i = myCount - 1 To -1 Step -1
Dim myLogEntry As EventLogEntry = myLogEntryCollection(i)
' Select the entry having desired EventType.
If myLogEntry.EntryType.ToString().Equals(myEventType) Then
' Display Source of the event.
Console.WriteLine(myLogEntry.Source + " was the source of last "& _
"event of type " & myLogEntry.EntryType.ToString())
Return
End If
Next i
End Sub 'Main
End Class 'MyEventlogClass
using System;
using System.Diagnostics;
class MyEventlogClass
{
public static void Main()
{
String myEventType=null;
// Associate the instance of 'EventLog' with local System Log.
EventLog myEventLog = new EventLog("System", ".");
Console.WriteLine("1:Error");
Console.WriteLine("2:Information");
Console.WriteLine("3:Warning");
Console.WriteLine("Select the Event Type");
int myOption=Convert.ToInt32(Console.ReadLine());
switch(myOption)
{
case 1: myEventType="Error";
break;
case 2: myEventType="Information";
break;
case 3: myEventType="Warning";
break;
default: break;
}
EventLogEntryCollection myLogEntryCollection=myEventLog.Entries;
int myCount =myLogEntryCollection.Count;
// Iterate through all 'EventLogEntry' instances in 'EventLog'.
for(int i=myCount-1;i>0;i--)
{
EventLogEntry myLogEntry = myLogEntryCollection[i];
// Select the entry having desired EventType.
if(myLogEntry.EntryType.ToString().Equals(myEventType))
{
// Display Source of the event.
Console.WriteLine(myLogEntry.Source
+" was the source of last event of type "
+myLogEntry.EntryType);
return;
}
}
}
}
#using <System.dll>
using namespace System;
using namespace System::Diagnostics;
int main()
{
String^ myEventType = nullptr;
// Associate the instance of 'EventLog' with local System Log.
EventLog^ myEventLog = gcnew EventLog( "System","." );
Console::WriteLine( "1:Error" );
Console::WriteLine( "2:Information" );
Console::WriteLine( "3:Warning" );
Console::WriteLine( "Select the Event Type" );
int myOption = Convert::ToInt32( Console::ReadLine() );
switch ( myOption )
{
case 1:
myEventType = "Error";
break;
case 2:
myEventType = "Information";
break;
case 3:
myEventType = "Warning";
break;
default:
break;
}
EventLogEntryCollection^ myLogEntryCollection = myEventLog->Entries;
int myCount = myLogEntryCollection->Count;
// Iterate through all 'EventLogEntry' instances in 'EventLog'.
for ( int i = myCount - 1; i > 0; i-- )
{
EventLogEntry^ myLogEntry = myLogEntryCollection[ i ];
// Select the entry having desired EventType.
if ( myLogEntry->EntryType.Equals( myEventType ) )
{
// Display Source of the event.
Console::WriteLine( "{0} was the source of last event of type {1}", myLogEntry->Source, myLogEntry->EntryType );
return 0;
}
}
}
System..::.Object
System..::.MarshalByRefObject
System.ComponentModel..::.Component
System.Diagnostics..::.EventLogEntry
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
.NET Framework
Supported in: 3.5, 3.0, 2.0, 1.1, 1.0
Reference