Read Arduino Stream with Js or C#

Hi there ! I'm working on a project where i need to read a stream from arduino. I tried use C# but i'm having problems with the Read() function freezing the game, the ReadExisting doesn't recieve anything and the event SerialDataReceivedEventHandler is never triggered. I tried to do the same thing in js but i can't get it work, it's say that "stream.on" its not a member of System.IO.Ports. Here is the code in C# and the code in js.

C# Code:

 using UnityEngine;
 using System.Collections;
 using System.IO.Ports;
 using System;
 
 public class LectorEncoder : MonoBehaviour 
 {
     public string puerto = "/dev/ttyACM1";
 
     SerialPort stream; //Establezco un stream con el puerto (com4) y el baud (11500)
     //float[] lastRot = {0,0,0}; //Need the last rotation to tell how far to spin the camera
 
     public bool abroPuerto = false;
     public bool cierro = false;
 
     void Start () 
     {
         stream = new SerialPort (puerto, 115200);
     }
 
     // Update is called once per frame
     void Update () 
     {
         
         if (abroPuerto && !stream.IsOpen) 
         {
             try
             {
                 stream.DataReceived += new SerialDataReceivedEventHandler(DataReceivedHandler);
                 stream.Open (); //Abro el stream del puerto serial.
                 stream.ReadTimeout = 1000;
                 Debug.Log("Esta abierto: "+stream.IsOpen);
 
             }
             catch (Exception e)
             {
                 Debug.Log("ups: "+e.ToString());
             }
         }
 
         if (cierro) {
             stream.Close ();
             abroPuerto = false;
         }
 
 
         //this.algo ();
     }
 
     public void algo()
     {
         if (stream.IsOpen) {
             try
             {
                 //Debug.Log ("Antes de leer");
                 string value = stream.ReadExisting (); //Leo la informacion del Stream
 
                 Debug.Log ("Lectura: " + value);
                 
             }
             catch (Exception e)
             {
                 Debug.Log("ups: "+e.ToString());
             }
         } else {
             Debug.Log ("El puerto no está abierto");
         }
     }
 

JS Code:

 #pragma strict
 import System.IO.Ports;
 
  public static var stream : SerialPort;
  public var nombrePuerto = "/dev/ttyACM1";
 
 
  public var abroPuerto = false;
  public var cierro = false;
  
  function Start () 
  {
      CrearSerialPort();
  }
 
  function Update () 
  {
      AbrirConexion();
  }
 
  function CrearSerialPort()
  { 
      stream = new SerialPort ();
      stream.BaudRate = 115200;
      stream.PortName = nombrePuerto;
      stream.Parity = Parity.None;
      stream.DataBits = 8;
      stream.StopBits = StopBits.One;
  }
 
  function AbrirConexion()
  {
      if (abroPuerto && !stream.IsOpen) 
     {
         Debug.Log("Antes del Try");
         try
         {
             stream.Open (); //Abro el stream del puerto serial.
             stream.ReadTimeout = 1000;
             Debug.Log("Esta abierto: "+stream.IsOpen);
 
         }
         catch (ex)
         {
             Debug.Log("Error: "+ex.ToString());
         }
     }
 
     if (cierro) 
     {
         Debug.Log("Entro a Cierro");
         stream.Close ();
         abroPuerto = false;
     }
  }
 
  function LeerDatos()
  {
      try
      {
           var receivedData = "";
           Debug.Log("Entro a LeerDatos()");
       }
     catch (ex)
     {
         Debug.Log("Error: "+ex.ToString());
     }
      stream.on('data', function(data) 
      { 
          Debug.Log("Entro a Stream.On()");
         receivedData += data.ToString();
         Debug.Log("Termino de leer: "+receivedData);
      });
  }
 
  function OnApplicationQuit()
  {
      stream.Close();
  }