unity 读取TXT文档的内容

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System.IO;
using System.Text;


public class LoadTxt : MonoBehaviour
{
    private  string MyTxT;
    public static float  txt1;
    private string path;
    private StreamReader sr;


    // Use this for initialization
    void Start()
    {
         path = Application.dataPath + "/TXT/txt.txt";
        //第一步访问Txt文件，在unity里面时，TXT文件夹在asstes里面的文件夹，导出的时候是在data文件夹里面
    }


    // Update is called once per frame
    void Update()
    {
        //读取内容
        sr = new StreamReader(path);
        MyTxT = sr.ReadToEnd();


        txt1 = float.Parse(MyTxT);
    }
}