写程序日志的类

public class PublicTool
    {
        /// <summary>
        /// 程序日志目录
        /// </summary>
        private static string logPath = AppDomain.CurrentDomain.BaseDirectory + @"Log\";
        /// <summary>
        /// 写程序日志
        /// </summary>
        /// <param name="content">内容</param>
        public static void WriteLog(string content)
        {
            StreamWriter sw = null;
            //日志文件名称
            string logName = DateTime.Now.ToString("yyyy-MM-dd") + "_log.txt";
            try
            {
                if (!Directory.Exists(PublicTool.logPath))
                {
                    //创建日志目录
                    Directory.CreateDirectory(PublicTool.logPath);
                }
                if (!File.Exists(PublicTool.logPath + logName))
                {
                    //创建日志文件
                    FileStream fs = File.Create(PublicTool.logPath + logName);
                    fs.Close();
                }
                //写入日志
                sw = File.AppendText(PublicTool.logPath + logName);
                sw.WriteLine(DateTime.Now.ToString("yyyy年MM月dd日 HH时mm分ss秒\r\n  ->") + content + "\r\n");
            }
            catch
            { }
            finally
            {
                if (sw != null)
                    sw.Close();
            }
        }
    }