学习PetShop 之 日志管理

需要加载：

using System.Diagnostics;

Web.config设置：

  <appSettings>

      ...............
    <add key="Event Log Source" value=".NET Pet Shop" />

     ...............

  </appSettings>

对全局的日志记录： 

在Global.asax文件里加入这样的函数：

//====================================================

  // Read in the name of the event log to use from web.config
  private static string LOG_SOURCE = ConfigurationSettings.AppSettings["Event Log Source"];

  protected void Application_Error(object sender, EventArgs e)
  {
   // If an exception is thrown in the application then log it to an event log
   Exception x = Server.GetLastError().GetBaseException();
   EventLog.WriteEntry(LOG_SOURCE, x.ToString(), EventLogEntryType.Error);
  }
//====================================================

创建日志：

   public static string EVENT_LOG_SOURCE = ConfigurationSettings.AppSettings["Event Log Source"];

  /// <summary>
  /// Creates the PetShop Event Source. This requires administrator privileges
  /// because it needs to write to the registry hive.
  /// </summary>
  /// <returns>If the event source was created successfully true is returned, otherwise false.</returns>
  public static bool CreateEventSource() {
   // make sure we have an event log
   if (!(EventLog.SourceExists(EVENT_LOG_SOURCE))) {
    try {
     EventLog.CreateEventSource(EVENT_LOG_SOURCE, "Application");
     return true;
    }
    catch (Exception) {
     return false;
    }
   }
   else { // the event source already exists
    return true;
   }
  }

 日志：

可以在windows的“事件查看器”里查看到该应用程序的日志事件。