ch7_08.cs

来自「《c#技术内幕代码》」· CS 代码 · 共 60 行

using System;
using System.Diagnostics;

class CH7_8
{
   public static void WriteLog()
   {
      string source = "EventSource";
      string log    = "CH7_8.LOG";
      
      // Create a new Event Log
      EventLog el = new EventLog();
      
      // See if it exists.
      if (!EventLog.SourceExists(source)) 
      {
          EventLog.CreateEventSource(source,log);
      }
      el.Source = source;

      String message =  "Starting Up";
      el.WriteEntry(message, EventLogEntryType.Information);      
      message =  "Processing";
      el.WriteEntry(message, EventLogEntryType.Information);      
      message =  "Shutting down";
      el.WriteEntry(message, EventLogEntryType.Information);      
   }
   public static void ReadLog()
   {
      string source = "EventSource";
      
      // Create a new Event Log
      EventLog el = new EventLog();
      
      // See if it exists.
      if (!EventLog.SourceExists(source)) 
      {
          Console.WriteLine("Event Log does not exist!");
	  return;
      }
      el.Source = source;

      foreach (EventLogEntry entry in el.Entries) {
           Console.WriteLine("\tEntry: " + entry.Message);
      }
   }
   public static void DeleteLog()
   {
      string log    = "CH7_8.LOG";
      EventLog.Delete( log );   
   }
   
   public static void Main()
   {
      WriteLog();
      ReadLog();
      DeleteLog();
   }
}