009_.Net 向服务器系统写程序错误日志和向系统管理员发送错误邮件！

1.向服务器系统写日志：

 1）动作按钮

    protected void btnCal_Click(object sender, System.EventArgs e)
  {
   try
   {
    int nInput = int.Parse(tbInput.Text);
    long nResult=1;
    for(int i=1;i<=nInput;i++)
     checked{nResult *= i;}
    lbResult.Text = nResult.ToString();
   }
   catch(OverflowException)//溢出错误异常处理
   {
    throw new Exception("输入的数字太大，我受不了了！");
   }
   catch(FormatException)//输入字符格式错误异常处理
   {
    Response.Write("嘿！要输入整数！");
   }
   catch(Exception ee)
   {
    Response.Write("发生错误，信息为："+ee.Message);
   }
  
  }

2）Page_Error

  protected void WebForm1_Error(object sender, System.EventArgs e)
  {
   string strMessage = Server.GetLastError().Message;
   //Response.Write(strMessage);
   Server.ClearError();
   //以下把信息写入windows日志
   //要把aspnet用户添加到管理员组中，以便有写注册表权限
   if(!EventLog.SourceExists("mySource"))
    EventLog.CreateEventSource("mySource","myLog");
   EventLog Event = new EventLog();
   Event.Source = "mySource";
   Event.WriteEntry(strMessage,EventLogEntryType.Warning);
   //EventLog.Delete("myLog");
   throw new Exception("我处理不了，请最高人民法院处理！");

  }

2.由程序级Error处理程序来处理错误：向管理员发邮件：

3)向管理员发邮件

protected void Application_Error(Object sender, EventArgs e)
  {
   //把错误信息发送到作者
   string strPageUrl = Request.Path;
   Exception ErrorInfo =Server.GetLastError();
   //Server.ClearError();
   string strMessage = "Url:" + strPageUrl + "</br>";
   strMessage = strMessage + " Error: ";
   strMessage = strMessage + ErrorInfo.ToString() + "</br>";

            MailMessage Mymessage = new MailMessage();
   Mymessage.To = "shaoxufeng@fujitec.com.cn";
            Mymessage.From = "shaoxufeng@fujitec.com.cn";
            Mymessage.Subject = "ASP.NET Error";
            Mymessage.BodyFormat = MailFormat.Text;
            Mymessage.Body = strMessage;

            Mymessage.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate", "1");  //basic authentication
            Mymessage.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusername", "shaoxufeng");//set your username here
            Mymessage.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendpassword", "shaoxufeng3600"); //set your password here
           // SmtpMail.SmtpServer="lsg.moon.net";
            SmtpMail.SmtpServer = "mail.fujitec.com.cn";
            SmtpMail.Send(Mymessage);

  }