Load Image in Unity using path from user

huy Guys I am here to know how to load an image from any place of my hard disk(depend on user) in unity application when my application is running.
a well known example is open(Cntrl + O) in any application. just same as. I am using this code but gave me error “could not load file at bla bla bla path”
My code is

using UnityEngine;
using System.Collections;
using System.IO;

public class image_loading : MonoBehaviour {
    private string url = @"file://C:/Users/Muhammad/Downloads/test.jpg";//suppose this path somewhere in my PC
    // Use this for initialization
    void Start() {
        StartCoroutine(LoadImage());
    }
    IEnumerator LoadImage() {
        Texture2D new_Texture = new Texture2D(960, 720, TextureFormat.DXT1, false);
            WWW www = new WWW(url);
            yield return www;
            www.LoadImageIntoTexture(new_Texture);
        this.GetComponent<Renderer>().material.mainTexture = new_Texture;
    }
	
	// Update is called once per frame
	void Update () {
	
	}
}

This worked for me
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System.IO;

public class LoadImage : MonoBehaviour
{

    public string imagePath;

    public void Start()
    {
        
    }

    public void AssignTexture()
    {
        GameObject.FindWithTag("Floor").GetComponent<MeshRenderer>().material.mainTexture = LoadPNG(imagePath);
    }

    public static Texture2D LoadPNG(string filePath)
    {

        Texture2D tex = null;
        byte[] fileData;

        if (File.Exists(filePath))
        {
            fileData = File.ReadAllBytes(filePath);
            tex = new Texture2D(2, 2);
            tex.LoadImage(fileData); //..this will auto-resize the texture dimensions.
        }
        return tex;

        
    }
}

Attach this script to an Empty called LoadImage, then link the Empty LoadImage to the button and use the function called AssignTexture().

I want to be able to prompt the user to browse their files however and haven’t found a solution yet. Asking users to copy and paste a filepath is a bit clumsy.