Log Response to File TXT, XML or Json using C# Helper

NavLogUtility.cs

  public enum NavFileTypes {
        TXT,
        JSON,
        XML

    }
    class NavUtilities
    {
        
        public static void LogResponseToFile(string content ,string fileName, NavFileTypes fileTypes)
        {
            if (!Directory.Exists(@"c:\Log"))
            {
                Directory.CreateDirectory(@"c:\Log");
            }

            var fname = fileName+"_" +  DateTime.Now.ToString("ddMMyyyyHHmmss");


            string filePath;

            switch (fileTypes)
            {
                case NavFileTypes.TXT:
                    filePath = @"c:\Log\" + fname + ".txt";
                    break;
                case NavFileTypes.JSON:
                    filePath = @"c:\Log\" + fname + ".json";
                    break;
                case NavFileTypes.XML:
                    filePath = @"c:\Log\" + fname + ".xml";
                    break;
                default:
                    filePath = @"c:\Log\" + fname + ".txt";
                    break;
            }


            FileStream fs = new FileStream(filePath, FileMode.OpenOrCreate, FileAccess.Write);
            StreamWriter sw = new StreamWriter(fs);
            sw.BaseStream.Seek(0, SeekOrigin.End);
            sw.WriteLine(content);
            sw.Flush();
            sw.Close();
        }



    }