非常好用的异步日志记录类

日常工作需要，结合前辈的经验，写了一个通用的日志记录类，感觉比较完善了，没有用到队列，只是简单的异步安全写入。

vs2010

using System;using System.Text;using System.IO;using System.Configuration;using System.Threading;using System.Reflection;using System.Diagnostics;namespace Wyw.Utilities{    /// <summary>    /// LogHelper    /// 异步日志类    ///     /// 修改记录    ///20120312 全部采用了静态，增加了取方法位置函数与每天新日志    ///20120404 增加了消息体结构及方法    /// 版本：1.0    /// <author>    ///<name>Wyw308</name>    ///<date>2012.03.11</date>    /// </author>    /// </summary>    public class LogHelper    {        private static string filePath = "log\\";        private static string fileName = DateTime.Now.ToString("yyyyMMdd") + ".log";        /// <summary>        /// 文件路径        /// </summary>        public static string FilePath        {            get { return filePath; }            set { filePath = value; }        }        /// <summary>        /// 文件名        /// </summary>        public static string FileName        {            get { return fileName; }            set { fileName = value; }        }        static Mutex myMutex = new Mutex();        private delegate void WriteStrToFileDelegate(Msg msg);        #region 将消息体写入日志文件        /// <summary>        /// 将消息体写入日志文件        /// </summary>        /// <param name="msg">消息体</param>        private static void WriteMsgToFile(Msg msg)        {            if (!Directory.Exists(LogHelper.FilePath))                Directory.CreateDirectory(LogHelper.FilePath);            StreamWriter sw = null;            myMutex.WaitOne(); //线程互斥            FileInfo finfo = new FileInfo(filePath + "\\" + fileName);            if (!finfo.Exists)            {                sw = File.CreateText(filePath + "\\" + fileName);            }            else            {                sw = new StreamWriter(finfo.OpenWrite());            }            sw.BaseStream.Seek(0, SeekOrigin.End);            sw.WriteLine(string.Format("{0}", msg.Datetime) + "\t" + msg.Type + "\t" + msg.Location + "\t" + msg.Text);            sw.Flush();            sw.Close();            myMutex.ReleaseMutex();        }        #endregion        #region 外部调用        /// <summary>        /// 获取方法类名等位置        /// </summary>        /// <param name="frameIndex">方法级别，默认1为调用它的方法名</param>        /// <returns>返回这样形式：shenghua_riba.Form1.WriMsg()</returns>        public static string GetMethodLocal(int frameIndex)        {            string str = string.Empty;            StackTrace ss = new StackTrace(true);            if (ss.FrameCount < frameIndex)                frameIndex = ss.FrameCount;            MethodBase mb = ss.GetFrame(frameIndex).GetMethod();            ////取得方法命名空间            //str += mb.DeclaringType.Namespace + "\n";            ////取得方法类名            //str += mb.DeclaringType.Name + "\n";            //取得方法类全名            str += mb.DeclaringType.FullName + ".";            //取得法名            str += mb.Name + "()";            return str;        }        public static void Write(string msgText)        {            Write(DateTime.Now, MsgType.Information, "", msgText);        }        public static void Write(string msgLocation, string msgText)        {            Write(DateTime.Now, MsgType.Information, msgLocation, msgText);        }        public static void Write(MsgType msgType, string msgLocation, string msgText)        {            Write(DateTime.Now, msgType, msgLocation, msgText);        }        /// <summary>        /// 基础方法        /// </summary>        /// <param name="msgDataTime"></param>        /// <param name="msgType"></param>        /// <param name="msgLocation"></param>        /// <param name="msgText"></param>        public static void Write(DateTime msgDataTime, MsgType msgType, string msgLocation, string msgText)        {            new WriteStrToFileDelegate(WriteMsgToFile).BeginInvoke(new Msg(msgDataTime, msgType, msgLocation, msgText), null, null);        }        #endregion        #region Msg        /// <summary>        /// 表示一个日志记录的对象        /// </summary>        private class Msg        {            //日志记录的时间            private DateTime datetime;            //日志记录的类型            private MsgType type;            // 日志位置            private string location;            //日志记录的内容            private string text;            /// <summary>            /// 创建新的日志记录实例;            /// </summary>            /// <param name="msgDataTime"></param>            /// <param name="msgType"></param>            /// <param name="msgLocation"></param>            /// <param name="msgText"></param>            public Msg(DateTime msgDataTime, MsgType msgType, string msgLocation, string msgText)            {                datetime = msgDataTime;                type = msgType;                location = msgLocation;                text = msgText;            }            /// <summary>            /// 获取或设置日志记录的时间            /// </summary>            public DateTime Datetime            {                get { return datetime; }                set { datetime = value; }            }            public string Location            {                get { return location; }                set { location = value; }            }            /// <summary>            /// 获取或设置日志记录的消息类型            /// </summary>            public MsgType Type            {                get { return type; }                set { type = value; }            }            /// <summary>            /// 获取或设置日志记录的文本内容            /// </summary>            public string Text            {                get { return text; }                set { text = value; }            }        }        #endregion        #region MsgType        /// <summary>        /// 日志消息类型的枚举        /// </summary>        public enum MsgType        {            /// <summary>            /// 普通信息            /// </summary>            Information,            /// <summary>            /// 指示警告信息类型的日志记录            /// </summary>            Warning,            /// <summary>            /// 指示错误信息类型的日志记录            /// </summary>            Error,            /// <summary>            /// 指示成功信息类型的日志记录            /// </summary>            Success,            /// <summary>            /// 指示致命类型的日志记录            /// </summary>            Fatal        }        #endregion    }}