写入事件日志中

global.asax中

void Application_Error(object sender,EventAges e)
{
  if(!System.Diagnostics.EventLog.SourceExists("ASPNETApplication"))
  {
    System.Diagnositcs.Event.CreateEventSource("ASPNETApplication",Application);
  }
  System.Diagnostics.EventLog.WriteEntry("ASPNETApplication",Server.GetLastError().Message);
}