Asp.net将图片转为Base64编码

protected void Page_Load(object sender, EventArgs e)
        {
            Image img = new Bitmap(Server.MapPath("/Libs/imgs/btn.png"));
            Response.Write("<img src='data:image/jpeg;base64," + ImageToBase(img, System.Drawing.Imaging.ImageFormat.Jpeg) + "' />");
        }
        public string ImageToBase(Image image, System.Drawing.Imaging.ImageFormat format)
        {
            using (MemoryStream ms = new MemoryStream())
            {
                // Convert Image to byte[]
                image.Save(ms, format);
                byte[] imageBytes = ms.ToArray();

                // Convert byte[] to Base64 String
                string base64String = Convert.ToBase64String(imageBytes);
                return base64String;
            }
        }