public class Loger

     {

         /// <summary>

         /// 写入日志

         /// </summary>

         /// <param name="content">日志内容</param>

         /// <param name="title">日志标题</param>

         /// <param name="folderName">文件夹名称</param>

         /// <param name="filePrefixName">文件前缀名</param>

         public static void Write(string content, string title = "", string folderName = "Log", string filePrefixName = "Log")

         {

             try

             {

                 lock (typeof(Loger))

                 {

                     DateTime dateTimeNow = DateTime.Now;

                     string logDirPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "log", folderName);

                     if (!Directory.Exists(logDirPath))

                     {

                         Directory.CreateDirectory(logDirPath);

                     }

                     string logFilePath = string.Format("{0}/{1}-{2}.txt", logDirPath, filePrefixName, dateTimeNow.ToString("yyyy-MM-dd"));

                     using (StreamWriter writer = new StreamWriter(logFilePath, true, Encoding.UTF8))

                     {

                         try

                         {

                             writer.WriteLine("------------------------------------------------------------------------------------------");

                             writer.WriteLine(title);

                             writer.WriteLine("日志时间：" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff"));

                             writer.WriteLine(content);

                             writer.WriteLine("------------------------------------------------------------------------------------------");

                         }

                         catch (Exception ex)

                         {

                             Console.WriteLine("Loger.cs Line45" + ex.Message);

                         }

                         writer.Close();

                     }

                 }

             }

             catch(Exception ex)

             {

                 Console.WriteLine("Loger.cs Line54" + ex);

                 //throw new Exception("无法将日志写入文件,请查看安装目录是否有权限!");

             }

         }

         /// <summary>

         /// 写入日志

         /// </summary>

         /// <param name="format">符合格式字符串</param>

         /// <param name="args">一个对象数组，其中包含零个或多个要设置格式的对象</param>

         public static void WriteFormat(string format, params object[] args)

         {

             string content = string.Format(format, args);

             Write(content, "", "Log", "Log");

         }

         /// <summary>

         /// 写入日志

         /// </summary>

         /// <param name="ex">Exception对象</param>

         /// <param name="title">日志标题</param>

         /// <param name="folderName">文件夹名称</param>

         /// <param name="filePrefixName">文件前缀名</param>

         public static void Write(Exception ex, string title = "", string folderName = "Exception", string filePrefixName = "Exception")

         {

             string content = string.Format("错误信息：{1}{0}错误来源：{2}{0}堆栈信息：{0}{3}", Environment.NewLine, ex.Message, ex.Source, ex.StackTrace);

             Write(content, title, folderName, filePrefixName);

         }

     }