Creating Custom EventLogs

[Mainframe Guy]

I am trying to write to a custom event log:

 
if (!EventLog.SourceExists("MySource")
EventLog.CreateEventSource("MySource", "MyLog");
 
EventLog myLog = new EventLlog();
myLog.Source = "MySource";
myLog.WriteEntry("Writing to MySource");
 
 

EventLog.SourceExists thinks "MySource" exists; however,
when I call 'WriteEntry', nothing gets created; f I try to delete it with EventLog.Delete("MySource") or ("MyLog"), ad InvalidOperationException is raised, as it thinks the log doesn't exist.

Also, I added a loop to examine all the existing logs on my server:

EventLog[] myEventLogs;
myEventLogs = EventLog.GetEventLogs(System.Environment.MachineName);
for (int i = 0; i < myEventLogs.Length; i++)
            Console.WriteLine(" Log: " + myEventLogs[i].Log + " \n Source: " + myEventLogs[i].Source);
 

The log doesn't show up at all.

I am logged on with admin privileges.
Can someone please help out here?

Thanks

[PRR]

I ran your code, it seems to work fine on my machine.

if (!EventLog.SourceExists("MySource"))
            {
            EventLog.CreateEventSource("MySource", "MyLog"); 
            }
 
        EventLog myLog = new EventLog(); 
        myLog.Source = "MySource"; 
        myLog.WriteEntry("Writing to MySource"); 
 

Create and Remove Custom Event Logs

[Plater]

Wouldn't the myLog object need to reference the log itself?
new EventLog("MyLog", myMachineName, "MySource");

[Mainframe Guy]

That overloaded method is obsolete.
My problem is that I am not able to write to the custom event log.
I added code to display all the logs on the computer, as well as to see where (if anywhere) my intended source is registered.

 
EventLog[] myLogs;
        myLogs = EventLog.GetEventLogs(myMachine);
        Console.WriteLine("Number of logs on computer: " + myLogs.Length);
 
        for (int i = 0; i < myLogs.Length; i++)
            Console.WriteLine("Log: " + myLogs[i].Log);
 
        Console.WriteLine("Source " + sourceName + " is registered to " + EventLog.LogNameFromSourceName(logName, myMachine));
 
 

I can see that sourceName exists and is registered to logName; however, when I write to the log it always ends up in the application log, not my custom event log:

 
if (!(EventLog.SourceExists(sourceName, System.Environment.MachineName)))
            EventLog.CreateEventSource(sourceName, logName);
        EventLog myLog = new EventLog(logName);
        myLog.Source = sourceName;
        myLog.WriteEntry(" writing to log " + logName);
 
 

I always see my entry with sourceName as the Source, but written to the Application log. However, the entry goes on that the description for Event ID (0) in Source ( mySource) cannot be found...

Hopefully this is just a novice error; but any help will be greatly appreciated

[PRR]

I would suggest try running your code( and some samples) on another machine. See if it works fine there. I do remeber encountering similar problem years back, of custom logs written to Application log.

try
            {
                if (!EventLog.SourceExists("One", Environment.MachineName))
                {
                    EventSourceCreationData data = new EventSourceCreationData("One", "Log1");
                    data.MachineName = Environment.MachineName;
 
                    EventLog.CreateEventSource(data);//("One", "Log1", Environment.MachineName);
                }
 
                using (EventLog e = new EventLog("Log1", Environment.MachineName, "One"))
                {
 
                    e.WriteEntry("hi", EventLogEntryType.Information, 666, 2);
                }
            }
            catch (Exception ec)
            {
                Console.WriteLine(ec.Message.ToString());
            }