using System.Diagnostics;

{
static void Main(string[] args)
{
    // Create the source, if it does not already exist.
    if (!EventLog.SourceExists("MySource"))
    {
        //An event log source should not be created and immediately used.
        //There is a latency time to enable the source, it should be created
        //prior to executing the application that uses the source.
        //Execute this sample a second time to use the new source.
        EventLog.CreateEventSource("MySource", "MyNewLog");
        Console.WriteLine("CreatedEventSource");
        Console.WriteLine("Exiting, execute the application a second time to use the source.");
        // The source is created.  Exit the application to allow it to be registered.
        return;
    }

    // Create an EventLog instance and assign its source.
    EventLog myLog = new EventLog();
    myLog.Source = "MySource";

    // Write an informational entry to the event log.    
    myLog.WriteEntry("Writing to event log.");


}