using System; using System.Diagnostics; class MainClass { public static void Main() { if (!EventLog.SourceExists("C#")) { EventLog.CreateEventSource("C#", "Application"); } EventLog.WriteEntry( "C#", // Registered event source "A simple test event.", // Event entry message EventLogEntryType.Information, // Event type 1, // Application-specific ID 0, // Application-specific category new byte[] { 10, 55, 200 } // Event data ); } }