Eventviewer不显示来自应用程序的事件日志

Question

.Net4.0，Windows 7（64位），基于C＃Winform的应用程序。 这是编写事件日志的方法。 但是，MS Eventviewer上没有显示事件日志。 你有什么主意吗 ？

private static void WriteEventLogEntry(string message)
{
        // Create an instance of EventLog
        System.Diagnostics.EventLog eventLog = new System.Diagnostics.EventLog();

        // Check if the event source exists. If not create it.
        if (!System.Diagnostics.EventLog.SourceExists("TestProgram"))
        {
            System.Diagnostics.EventLog.CreateEventSource("TestProgram", "Application");
        }

        // Set the source name for writing log entries.
        eventLog.Source = "TestProgram";

        // Create an event ID to add to the event log
        int eventID = 8;

        // Write an entry to the event log.
        eventLog.WriteEntry(message,
                            System.Diagnostics.EventLogEntryType.Information,
                            eventID);

        // Close the Event Log
        eventLog.Close();
    } 
}

编辑：

我更改了下面的代码。 我无需管理员即可查看事件日志。 我还有一个问题。 有两个日志，例如“ Log 1”和“ Log 2”。 我可以在查看器上看到“日志1”。 但是，我看不到“日志2”。 你有什么主意吗 ？

using System.Diagnostics;

namespace ImageDelegateSample
{
    static class Program
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.ThreadException += new ThreadExceptionEventHandler(Application_ThreadException);
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);

            MdiForm mainForm = null;
            try
            {                    
                  bool createdNew;
                Mutex dup = new Mutex(true, "ImageDelegateSample", out createdNew);
                if (createdNew)
                {
                    // Log 1
                    WriteEventLogEntry("Loading", EventLogEntryType.Information);

                    mainForm = new MdiForm();
                    Application.Run(mainForm);    

                    // Log 2
                    WriteEventLogEntry("Done Loading", EventLogEntryType.Information);

                }
                else
                {
                    MessageBox.Show("already running.");
                }
            }
            catch (Exception e)
            {
                // You probably want something a little more sophisticated than this
                MessageBox.Show(e.Message, "An exception occurred:", MessageBoxButtons.OK, MessageBoxIcon.Error);
                HandleError(e);

                System.Environment.Exit(0);
            }
        }

        static void Application_ThreadException(object sender, ThreadExceptionEventArgs e)
        {
            HandleError(e.Exception);
        }

        internal static void HandleError(Exception e)
        {            
            string message = e.Message + "\n\n";
            if (e.InnerException != null)
                message += "Inner exception:\n" + e.InnerException.Message + "\n\n";
            message += e.StackTrace;
            MessageBox.Show(message, "An error has occurred:");
        }

        private static readonly string EventLogName = "Application";
        private static readonly string EventLogSource = "ImageDelegateSample.exe";

        private static void WriteEventLogEntry(string message, EventLogEntryType type)
        {
            // In the only function that does something
            if (!EventLog.Exists(EventLogName))
            {
                EventLog.CreateEventSource(EventLogSource, EventLogName);
                return;
            }
            else
            {
                // This doesn't write anything
                EventLog.WriteEntry(EventLogSource,
                    message,
                    type);
            }
        } 
    }
}