public class Log{private static LogManager logManager;static Log(){logManager = new LogManager();}public static void WriteLog(LogFile logFile, string msg){try{logManager.WriteLog(logFile, msg);}catch{}}public static void WriteLog(string msg){try{logManager.WriteLog(LogFile.Info, msg);}catch{}}public static void WriteLog(string logFile, string msg){try{logManager.WriteLog(logFile, msg);}catch{}}}public class LogManager{private string logFileName = string.Empty;private string logPath = "Log";private string logFileExtName = "log";private bool writeLogTime = true;private bool logFileNameEndWithDate = true;private Encoding logFileEncoding = Encoding.UTF8;private object obj = new object();#region 构造函数public LogManager(){this.LogPath = "Log";this.LogFileExtName = "log";this.WriteLogTime = true;this.logFileNameEndWithDate = true;this.logFileEncoding = Encoding.UTF8;}public LogManager(string logPath, string logFileExtName, bool writeLogTime){this.LogPath = logPath;this.LogFileExtName = logFileExtName;this.WriteLogTime = writeLogTime;this.logFileNameEndWithDate = true;this.logFileEncoding = Encoding.UTF8;}#endregion#region 属性/// <summary>/// Log 文件路径/// </summary>public string LogPath{get{if (this.logPath == null || this.logPath == string.Empty){//Application.StartupPaththis.logPath = System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, DateTime.Now.ToString("yyyy-MM-dd"));}return this.logPath;}set{this.logPath = value;if (this.logPath == null || this.logPath == string.Empty){//Application.StartupPaththis.logPath = System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, DateTime.Now.ToString("yyyy-MM-dd"));}else{try{// 判断是否不是绝对路径（绝对路径里还有":"）if (this.logPath.IndexOf(Path.VolumeSeparatorChar) >= 0){ /* 绝对路径 */}else{// 相对路径this.logPath = System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory + this.logPath, DateTime.Now.ToString("yyyy-MM-dd"));}if (!Directory.Exists(this.logPath))Directory.CreateDirectory(this.logPath);}catch{this.logPath = System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, DateTime.Now.ToString("yyyy-MM-dd"));}if (!this.logPath.EndsWith(@"\"))this.logPath += @"\";}}}/// <summary>/// Log 文件扩展名/// </summary>public string LogFileExtName{get { return this.logFileExtName; }set { this.logFileExtName = value; }}/// <summary>/// 是否在每个Log行前面添加当前时间/// </summary>public bool WriteLogTime{get { return this.writeLogTime; }set { this.writeLogTime = value; }}/// <summary>/// 日志文件名是否带日期/// </summary>public bool LogFileNameEndWithDate{get { return logFileNameEndWithDate; }set { logFileNameEndWithDate = value; }}/// <summary>/// 日志文件的字符编码/// </summary>public Encoding LogFileEncoding{get { return logFileEncoding; }set { logFileEncoding = value; }}#endregion#region 公有方法public void WriteLog(string logFile, string msg){lock (obj){try{string dateString = string.Empty;if (this.logFileNameEndWithDate || logFile.Length == 0){dateString = DateTime.Now.ToString("yyyyMMdd");}logFileName = string.Format("{0}{1}{2}.{3}",this.LogPath,logFile,dateString,this.logFileExtName);using (StreamWriter sw = new StreamWriter(logFileName, true, logFileEncoding)){if (writeLogTime){sw.WriteLine(DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss: ") + msg);}else{sw.WriteLine(msg);}}}catch{}}}public void WriteLog(LogFile logFile, string msg){this.WriteLog(logFile.ToString(), msg);}public void WriteLog(string msg){this.WriteLog(string.Empty, msg);}#endregion}public enum LogFile{Trace,Error,SQL,SQLError,Login,Info,WeChat}