How to write Event viewer log using C#

Call the below function, this will create and write into the event viewer.

   1:  private void LogErrorToEventLog() 

   2:  { 

   3:  string sSource; 

   4:  string sLog; 

   5:  string strEvent="Error Occured";

   6:  sSource = "test"; 

   7:  sLog = "Application"; 

   8:  if (!EventLog.SourceExists(sSource)) 

            EventLog.CreateEventSource(sSource,sLog); 

   9:  EventLog.WriteEntry(sSource, 

       strEvent,EventLogEntryType.Error, 234); 

  10:  }