Write Logs in class

 public static void WriteToLog(string EventName, string Action)
        {
            string appName = Environment.CurrentDirectory;
            int l = appName.Length;
            int h = appName.LastIndexOf("bin");
            string ll = appName.Remove(h);
            string strPath = ll + "FolderLog";

            if (!Directory.Exists(strPath))
            {
                Directory.CreateDirectory(strPath);
            }
            string fileLoc = strPath + "\\" + DateTime.Now.ToString("ddMMMyyyy") + ".log";
            FileStream Fs = new FileStream(fileLoc, FileMode.Append);
            BinaryWriter BWriter = new BinaryWriter(Fs, Encoding.GetEncoding("UTF-8"));
            string msg = string.Format("\r\n" + DateTime.Now.ToString() + " ==> EventName:: " + EventName + " ==> Action:: " + Action);
            BWriter.Write(msg.ToString());
            Fs.Close();
        }