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;
             }
         }