C#TryCatch에서 캡처되지 않은 예외 캡처

      //            ：ThreadException  
      Application.SetUnhandledExceptionMode(UnhandledExceptionMode.CatchException);
      //  UI    
      Application.ThreadException += new System.Threading.ThreadExceptionEventHandler(Application_ThreadException);
      //   UI    
      AppDomain.CurrentDomain.UnhandledException += new UnhandledExceptionEventHandler(CurrentDomain_UnhandledException);

  private static void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e)
  {
      string str = GetExceptionMsg(e.ExceptionObject as Exception, e.ToString());
      //     ，     
  }

  private static void Application_ThreadException(object sender, ThreadExceptionEventArgs e)
  {
      string str = GetExceptionMsg(e.Exception, e.ToString());
      //     ，     
  }

  static string GetExceptionMsg(Exception ex, string backStr)
  {
      StringBuilder sb = new StringBuilder();
      sb.AppendLine("****************************    ****************************");
      sb.AppendLine("【    】：" + DateTime.Now.ToString());
      if (ex != null)
      {
          sb.AppendLine("【    】：" + ex.GetType().Name);
          sb.AppendLine("【    】：" + ex.Message);
          sb.AppendLine("【    】：" + ex.StackTrace);

          sb.AppendLine("【    】：" + ex.TargetSite);

      }
      else
      {
          sb.AppendLine("【     】：" + backStr);
      }
      sb.AppendLine("***************************************************************");
      return sb.ToString();
  }