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EventLog Constructor (String)

Initializes a new instance of the EventLog class. Associates the instance with a log on the local computer.

Namespace: System.Diagnostics
Assembly: System (in system.dll)

public EventLog (
	string logName
)
public EventLog (
	String logName
)
public function EventLog (
	logName : String
)

Parameters

logName

The name of the log on the local computer.

Exception typeCondition

ArgumentNullException

The log name is a null reference (Nothing in Visual Basic).

ArgumentException

The log name is invalid.

This overload sets the Log property to the logName parameter. Before calling WriteEntry, specify the Source property of the EventLog instance. If you are only reading Entries from the log, you can alternatively specify only the Log and MachineName properties.

NoteNote

If you do not specify a MachineName, the local computer (".") is assumed. This overload of the constructor specifies the Log property, but you can change this before reading the Entries property.

If the source you specify in the Source property is unique from other sources on the computer, a subsequent call to WriteEntry creates a log with the specified name, if it does not already exist.

The following table shows initial property values for an instance of EventLog.

Property

Initial Value

Source

An empty string ("").

Log

The logName parameter.

MachineName

The local computer (".").

The following example reads entries in the event log, "myNewLog", on the local computer.

using System;
using System.Diagnostics;
using System.Threading;
              
class MySample{


    public static void Main(){
           
                        
        // Create an EventLog instance and assign its log name.
        EventLog myLog = new EventLog("myNewLog");

        // Read the event log entries.
        foreach(EventLogEntry entry in myLog.Entries){
            Console.WriteLine("\tEntry: " + entry.Message);
        }                                                                     
    }
}
   

import System.*;
import System.Diagnostics.*;
import System.Threading.*;

class MySample
{
    public static void main(String[] args)
    {
        // Create an EventLog instance and assign its log name.
        EventLog myLog = new EventLog("myNewLog");

        // Read the event log entries.
        for (int iCtr = 0; iCtr < myLog.get_Entries().get_Count(); iCtr++) {
            EventLogEntry entry = myLog.get_Entries().get_Item(iCtr);
            Console.WriteLine("\tEntry: " + entry.get_Message());
        }
    } //main
} //MySample

Windows 98, Windows 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0
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