Asp.Net : 捕捉和记录网站中出现的所有未处理错误，抛出详细的页面来源和访问ip，调用的接口方法及异常实例(记事本日志,系统日志及数据库日志)

using System.Web.Security;
using System.Web.SessionState;
using System.Data;

protected void Application_Error(object sender, EventArgs e)
        {
            //捕捉和记录网站中出现的所有未处理错误，抛出详细的页面来源和访问ip，调用的接口方法及异常实例(详细说明)。 - 2012-02-13 
            HttpContext ctx = HttpContext.Current;
            if (ctx == null) return;
            try
            {
                Exception erroy = Server.GetLastError();
                string LogErr = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + "；出错页面：" + Request.Url.ToString() + "；访问IP：" + Request.UserHostAddress.ToString() + "\r\n";
                LogErr += "异常信息：(" + erroy.Message + ")\r\n";
                LogErr += "异常方法：(" + erroy.TargetSite + ")\r\n";
                LogErr += "异常来源：(" + erroy.Source + ")\r\n";
                LogErr += "异常处理：\r\n" + erroy.StackTrace + "\r\n";
                LogErr += "异常实例：\r\n" + erroy.InnerException + "\r\n";
                LogErr += "//**********************************************************************************************************************" + "\r\n";

                Platform.Controllers.P_LogInfo.WriteTextLog(LogErr);
                //**********************************************************************************************************************
                ////Window系统安全日志
                //Platform.Controllers.P_LogInfo.WriteTextLog(LogErr);
                ////文本文件安全日志,带类命名空间
                //Platform.Controllers.P_LogInfo.WriteTextLog("Platform.B2C", LogErr);
                ////文本文件安全日志
                //Platform.Controllers.P_LogInfo.WriteWindowLog(LogErr);
                ////数据库SQL安全日志
                //Platform.Controllers.P_LogInfo.WriteSQLLog("网站登陆", Platform.Controllers.P_LogInfo.LogErrType.B2CLog, LogErr, HttpContext.Current.User);
                //**********************************************************************************************************************
            }
            catch
            {
            }
            finally
            {
                //清除前一个异常
                Server.ClearError();               

                //此处不是page中，不能用Response.Redirect("../frmSysError.aspx");
                //System.Web.HttpContext.Current.Response.Redirect("http://" + HttpContext.Current.Request.Url.Host.ToString() + "/UpdateTip.htm");
            }
        }

日志类...:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Data;
using System.Data.SqlClient;
using System.Security.Principal;
using System.Reflection;
using System.Diagnostics;
/*
 * 功能描述：网站日志
 * 创建人：  **
 * 创建日期：2012年02月13日
 */
namespace Platform
{
    /// <summary>
    /// 同行网站日志
    /// </summary>
    public class LogInfo
    {
        public LogInfo()
        {
        }

        /// <summary>
        /// 1)Window系统安全日志: 写入日志到window系统日志(事件查看器中查看:)
        /// </summary>
        /// <param name="strMessage">日志详细</param>
        /// <returns></returns>
        public static void WriteWindowLog(string strMessage)
        {
            EventLog eventLog = null;
            string sourceName = "Platform";
            //确定日志是否存在
            if (!(EventLog.SourceExists(sourceName)))
            {
                EventLog.CreateEventSource(sourceName, sourceName + "Log");
            }
            if (eventLog == null)
            {
                eventLog = new EventLog(sourceName + "Log");
                eventLog.Source = sourceName;
            }
            //记录日志安全信息
            eventLog.WriteEntry(strMessage, System.Diagnostics.EventLogEntryType.Error);
        }
        /// <summary>
        /// 2.1)文本文件安全日志: 写入日志到文本文件，并指定写入类的命名空间
        /// </summary>
        /// <param name="nameSpace">命名空间</param>
        /// <param name="strMessage">日志详细</param>
        public static void WriteTextLog(string nameSpace, string strMessage)
        {
            strMessage = DateTime.Now.ToLongDateString() + DateTime.Now.ToLongTimeString() + ", NameSpace:" + nameSpace + "\r\n" + "ErrorMessage:" + strMessage;
            string path = AppDomain.CurrentDomain.BaseDirectory + @"TBSystem\Log\";
            if (!Directory.Exists(path))
                Directory.CreateDirectory(path);
            string fileFullPath = path + DateTime.Now.Year.ToString() + "." + DateTime.Now.Month.ToString() + "." + DateTime.Now.Day.ToString() + ".TBSystem.Shop.txt";
            StreamWriter sw;
            if (!File.Exists(fileFullPath))
            {
                sw = File.CreateText(fileFullPath);
            }
            else
            {
                sw = File.AppendText(fileFullPath);
            }
            sw.WriteLine(strMessage);
            sw.Close();
        }
        /// <summary>
        ///  2.2)文本文件安全日志: 写入日志到文本文件
        /// </summary>
        /// <param name="strMessage">日志详细(无命名空间)</param>
        public static void WriteTextLog(string strMessage)
        {
            string path = AppDomain.CurrentDomain.BaseDirectory + @"TBSystem\Log\";
            if (!Directory.Exists(path))
                Directory.CreateDirectory(path);

            string fileFullPath = path + DateTime.Now.Year.ToString() + "." + DateTime.Now.Month.ToString() + "." + DateTime.Now.Day.ToString() + ".TBSystem.Shop.txt";
            StreamWriter sw;
            if (!File.Exists(fileFullPath))
            {
                sw = File.CreateText(fileFullPath);
            }
            else
            {
                sw = File.AppendText(fileFullPath);
            }
            sw.WriteLine(strMessage);
            sw.Close();
        }
        /// <summary>
        ///3)数据库日志: 记录操作安全日志，并写入数据库
        /// </summary>
        /// <param name="logName">日志名称</param>
        /// <param name="logType">日志类型</param>
        /// <param name="strMessage">日志详细</param>
        /// <param name="user">操作人</param>
        /// <returns></returns>
        public static bool WriteSQLLog(string logName, LogErrType logType, string strMessage, IPrincipal user)
        {
            try
            {
                //从登陆用户中得到帐号
                string account = "";  //GetAccountFromLogin(user);
                //string sql = "Produce_AddLog ";
                SqlParameter[] sp = new SqlParameter[4];
                sp[0] = new SqlParameter("@Account", SqlDbType.NVarChar);
                sp[0].Value = account;
                sp[1] = new SqlParameter("@LogName", SqlDbType.NVarChar);
                sp[1].Value = logName;
                sp[2] = new SqlParameter("@LogModule", SqlDbType.Int);
                sp[2].Value = (int)logType;
                sp[3] = new SqlParameter("@LogExplain", SqlDbType.NVarChar);
                sp[3].Value = strMessage;
                //new Database(DatabaseName.produceDB).ExecuteNonQuery(sql, sp, true);
                return true;
            }
            catch (Exception ex)
            {
                WriteTextLog("TBSystem.Shop.Log", "写" + logName + "操作日志错误：" + ex.Message);
                return false;
            }
        }
    }
    /// <summary>
    /// 日志类型
    /// </summary>
    public enum LogErrType
    {
        SystemLog,
        B2BLog,
        B2CLog
    }
}