Screenshot and use it in GUITexture Script Help

This is a working script for Cature a screenshot and save it in file

after that i create a GUITexture and put the Texture to None(Texture)

when i screenshot and save,i wanted it to display it on GUITexture>can some1 help me thx i have no idea how to write it


using UnityEngine;
using System.Collections;

public class TakeScreenshot : MonoBehaviour
{
private int screenshotCount = 0;

// Check for screenshot key each frame
void Update()
{
    // take screenshot on up->down transition of F9 key
    if (Input.GetKeyDown("k"))
    {        
        string screenshotFilename;
        do
        {
            screenshotCount++;
            screenshotFilename = "screenshot" + screenshotCount + ".png";

        } while (System.IO.File.Exists(screenshotFilename));
        
        Application.CaptureScreenshot(screenshotFilename);
    }
	
}

}

I found a similar post have a look at this