How to get a JSON string of a folder structure with c# in Unity3d

Hi again,

i managed to code this:

 using UnityEngine;
 using System.Collections;
 using System.Collections.Generic;
 using Pathfinding.Serialization.JsonFx;
 using System.IO;
 
 public class JBrowser : MonoBehaviour
 {
 
     private string title ;
     private bool isFolder ;
     private string key ;
     private List<string> children;
     private  DirectoryInfo fsi;
     private StreamWriter streamWriter;
     private bool on = true;
 
 
     void Start ()
     {
         fsi = new DirectoryInfo (@"c:\");
         title = fsi.Name;
         Debug.Log (title);
         children = new List<string> ();
     }
 
     void Update ()
     {
         if (on) {
             if (fsi.Attributes == FileAttributes.Directory) {
                 isFolder = true;
                 foreach (FileSystemInfo f in fsi.GetFileSystemInfos()) {
                     children.Add (f.Name.ToString ());
                 }
             } else {
                 isFolder = false;
             }
             key = title.Replace (" ", "").ToLower ();
             
             //        JsonToDynatree ();
             //    }
             //        
             //
             //    private void JsonToDynatree ()
             //    {
             string data = JsonWriter.Serialize (children);
             //        if(!Directory.Exists(PATH)){
             //            Directory.CreateDirectory(PATH);
             //        }
             streamWriter = new StreamWriter (@"c:\JsonBrowsingList.txt");
             streamWriter.Write (data);
             streamWriter.Close ();
             //        return JsonConvert.SerializeObject (this, Formatting.Indented);
             on = false;
         }
         
     }
 
 }

and i ve created the json.txt file in the c:/ drive, and it is supposed to be filled with the folders and files names but instead is only showing empty brackets... ?? ([])

Old question, but maybe others will land here, (Have a look at this post) https://stackoverflow.com/questions/24725775/converting-a-directory-structure-and-parsing-to-json-format-in-c-sharp

Just change out to your preferred parser.

 public string JsonToDynatree()
 {
   //return JsonConvert.SerializeObject(this, Formatting.Indented);
   return JsonUtility.ToJson(this, true);
 }