c#实现记录每个线程的log日志

这是从网上找来的源码，学习参考，在这里也首先谢谢提供者。

using System;using System.Reflection;using System.Collections.Generic;using System.Xml;using System.Net;using System.Text;using System.Data;using System.IO;using System.Threading;using System.Web;namespace Sample{    public enum VariableType    {        Text = -1,        FunctionName = 0,        Parameter = 1    }    public static class LogManagement    {        public static Dictionary<int, ThreadLog> _threadLogDictionary = new Dictionary<int, ThreadLog>();                private static ThreadLog ChooseThreadLog()        {            if (_threadLogDictionary.ContainsKey(Thread.CurrentThread.ManagedThreadId))            {                return _threadLogDictionary[Thread.CurrentThread.ManagedThreadId] as ThreadLog;            }            else            {                AddThreadLog();                return _threadLogDictionary[Thread.CurrentThread.ManagedThreadId] as ThreadLog;            }                    }        private static void AddThreadLog()        {            if (!_threadLogDictionary.ContainsKey(Thread.CurrentThread.ManagedThreadId))            {                _threadLogDictionary.Add(Thread.CurrentThread.ManagedThreadId,                     new ThreadLog());            }                  }        private static void RemoveThreadLog()        {            if (_threadLogDictionary.ContainsKey(Thread.CurrentThread.ManagedThreadId))            {                _threadLogDictionary.Remove(Thread.CurrentThread.ManagedThreadId);            }                }        public static string ParkFuncParm(VariableType VbType, string name, string value)        {                        return "<" + VbType.ToString() + " name = /"" + name + "/">" + value + "</" + VbType.ToString() + ">";        }        public static void CheckException(Exception exception)        {            if (_threadLogDictionary.ContainsKey(Thread.CurrentThread.ManagedThreadId))            {                ThreadLog TDLog = _threadLogDictionary[Thread.CurrentThread.ManagedThreadId];                TDLog.CheckException(exception);            }            else            {                AddThreadLog();                _threadLogDictionary[Thread.CurrentThread.ManagedThreadId].CheckException(exception);            }        }        public static void MakeLog(string description, string data)        {            ThreadLog TDLog = ChooseThreadLog();            if (TDLog != null)            {                TDLog.MakeLog(description, data);            }                }        public static void BeginLog(string functionName, string variableInfo,string note)        {            ThreadLog TDLog = ChooseThreadLog();            if (TDLog != null)            {                TDLog.BeginLog(functionName, variableInfo, note);            }                   }        public static void EndLog(string Data)        {            ThreadLog TDLog = ChooseThreadLog();            if (TDLog != null)            {                TDLog.EndLog(Data);            }                   }        public static string GetResult()        {            string ResultData = "<EmptyData></EmptyData>";            ThreadLog TDLog = ChooseThreadLog();            if (TDLog != null && TDLog.XmlDOM != null && TDLog.XmlDOM.DocumentElement != null)            {                                ResultData =  TDLog.XmlDOM.DocumentElement.OuterXml;                TDLog.XmlDOM = null;                _threadLogDictionary.Remove(Thread.CurrentThread.ManagedThreadId);                            }            return ResultData;        }    }    public class ThreadLog    {        private UInt32 _logId = 1;        private Boolean _hasInitialized = false;        private Stack<LogInformation> _logInfoStack = null;        private XmlDocument _logInfoDataDOM = null;                public XmlDocument XmlDOM        {            set { _logInfoDataDOM = value; }            get { return _logInfoDataDOM; }        }        public ThreadLog()        {            _logInfoStack = new Stack<LogInformation>();            _logInfoDataDOM = new XmlDocument();        }        private void InitializeQuicktakeLog()        {            _logInfoDataDOM.LoadXml("<LogEntry></LogEntry>");            XmlAttribute attr = _logInfoDataDOM.CreateAttribute("RequestURL");            attr.Value = (HttpContext.Current != null && HttpContext.Current.Request != null) ? string.Empty :                HttpContext.Current.Request.RawUrl;            _logInfoDataDOM.DocumentElement.Attributes.Append(attr);            attr = _logInfoDataDOM.CreateAttribute("BeginTime");            attr.Value = DateTime.Now.ToString();            _logInfoDataDOM.DocumentElement.Attributes.Append(attr);            attr = _logInfoDataDOM.CreateAttribute("TotalTime");            attr.Value = DateTime.Now.ToString();            _logInfoDataDOM.DocumentElement.Attributes.Append(attr);            attr = _logInfoDataDOM.CreateAttribute("ThreadId");            attr.Value = Thread.CurrentThread.ManagedThreadId.ToString();            _logInfoDataDOM.DocumentElement.Attributes.Append(attr);            _hasInitialized = true;        }        public void MakeLog(string description, string data)        {            if (!_hasInitialized)            {                InitializeThreadLog();            }            XmlElement XE = _logInfoDataDOM.CreateElement("Log");            _logInfoDataDOM.DocumentElement.AppendChild(XE);            XmlAttribute attr = _logInfoDataDOM.CreateAttribute("Id");            attr.Value = _logId.ToString();            _logId++;            XE.Attributes.Append(attr);            XmlElement XESub = _logInfoDataDOM.CreateElement("LogStep");            XESub.InnerText = data;                        attr = _logInfoDataDOM.CreateAttribute("Description");            attr.Value = description;            XESub.Attributes.Append(attr);            XE.AppendChild(XESub);        }        public void BeginLog(string functionName, string variableInfo,string note)        {            LogInformation LogInfo = new LogInformation(_logId, note, functionName, variableInfo);            if (!_hasInitialized)            {                InitializeThreadLog();            }            _logInfoStack.Push(new LogInformation(_logId, note, functionName, variableInfo));            _logId++;        }               public void EndLog(string data)        {            if (_logInfoStack.Count != 0)            {                LogInformation logInfo = _logInfoStack.Pop();                logInfo.EndTime = DateTime.Now;                logInfo.TotalTime = logInfo.EndTime - logInfo.BeginTime;                XmlNode NodeXml = _logInfoDataDOM.DocumentElement as XmlNode;                if (NodeXml != null)                {                    XmlElement LogXml = _logInfoDataDOM.CreateElement("Log");                    NodeXml.AppendChild(LogXml);                    XmlAttribute logidAttr = _logInfoDataDOM.CreateAttribute("Id");                    logidAttr.Value = logInfo.Id.ToString();                    LogXml.Attributes.Append(logidAttr);                    XmlAttribute attr = _logInfoDataDOM.CreateAttribute("TotalTime");                    attr.Value = (logInfo.EndTime - logInfo.BeginTime).TotalMilliseconds.ToString();                    LogXml.Attributes.Append(attr);                    attr = _logInfoDataDOM.CreateAttribute("BeginTime");                    attr.Value = logInfo.BeginTime.ToString();                    LogXml.Attributes.Append(attr);                    LogXml.InnerXml = logInfo.FunctionInfo;                    LogXml.InnerXml += logInfo.VariableInfo;                    XmlElement LogXml2 = _logInfoDataDOM.CreateElement("Data");                    LogXml.AppendChild(LogXml2);                    LogXml2.InnerXml = data;                        }                            }            if (_logInfoStack.Count == 0)            {                if (_logInfoDataDOM.DocumentElement.Attributes["TotalTime"] != null)                {                    _logInfoDataDOM.DocumentElement.Attributes["TotalTime"].Value = (                        DateTime.Now - DateTime.Parse(_logInfoDataDOM.DocumentElement.Attributes["TotalTime"].Value)).TotalMilliseconds.ToString();                }            }                  }               public void CheckException(Exception exception)        {            if (_logInfoStack.Count > 0)            {                LogInformation LogNode = _logInfoStack.Pop();                XmlElement ExcpElem = _logInfoDataDOM.CreateElement("ExceptionDescription");                ExcpElem.InnerXml = "<Exception>" + exception.Message + Environment.NewLine +exception.Source +                     Environment.NewLine + exception.StackTrace + Environment.NewLine + "</Exception>" + LogNode.FunctionInfo + LogNode.VariableInfo;                                _logInfoDataDOM.DocumentElement.AppendChild(ExcpElem);                _logInfoDataDOM.DocumentElement.Attributes["TotalTime"].Value = (DateTime.Now - DateTime.Parse(_logInfoDataDOM.DocumentElement.Attributes["BeginTime"].Value)).TotalMilliseconds.ToString();                               _logInfoStack = null;                     }                    }            }    public class LogInformation    {        private uint _Id;        private TimeSpan _totalTime;        private DateTime _beginTime;        private DateTime _endTime;        private string _data = null;        private string _functionInfo = null;        private string _variableInfo = null;        private string _note = null;        public uint Id        {            set { _Id = value; }            get { return _Id; }        }        public TimeSpan TotalTime        {            set{ _totalTime = value; }            get { return _totalTime; }        }        public DateTime BeginTime        {            set { _beginTime = value; }            get { return _beginTime; }        }        public DateTime EndTime        {            set { _endTime = value; }            get { return _endTime; }        }        public string FunctionInfo        {            set { _functionInfo = value; }            get { return _functionInfo; }        }        public string VariableInfo        {            set { _variableInfo = value; }            get { return _variableInfo; }        }        public string Note        {            set { _note = value; }            get { return _note; }        }        public string Data        {            set { _data = value; }            get { return _data; }        }        public LogInformation(uint Id, string note, string functionNameInfo, string variableInfo)        {            Initialize();            _Id = Id;                        _note = note;            _functionInfo = functionNameInfo;            _variableInfo = variableInfo;        }        private void Initialize()        {            _totalTime = TimeSpan.Zero;            _beginTime = DateTime.Now;            _endTime = _beginTime;        }    }}