DownloadingImage

  void DownloadImage()
    {
        using (var webClient = new WebClient())
        {

            webClient.DownloadDataCompleted += WebClient_DownloadDataCompleted;
            var imageBytes = webClient.DownloadDataTaskAsync(imageURL);
            downloadStarted = true;

        }
    }
    void WebClient_DownloadDataCompleted(object sender, System.Net.DownloadDataCompletedEventArgs e)
    {
        Debug.Log(sender.ToString());
        var imageBytes = e.Result;

        if (imageBytes != null && imageBytes.Length > 0)
        {
            var texture = new Texture2D(2, 2);
            texture.LoadImage(imageBytes);
            Rect rec = new Rect(0, 0, texture.width, texture.height);
            var spriteToUse = Sprite.Create(texture, rec, new Vector2(0.5f, 0.5f), 100);
        }
    }