C#实现的图片、string相互转换类分享

class FormatChange  {    public static string ChangeImageToString(Image image)    {      try      {        MemoryStream ms = new MemoryStream();        image.Save(ms, System.Drawing.Imaging.ImageFormat.Gif);        byte[] arr = new byte[ms.Length];        ms.Position = 0;        ms.Read(arr, 0, (int)ms.Length);        ms.Close();        string pic = Convert.ToBase64String(arr);        return pic;      }      catch (Exception)      {        return "Fail to change bitmap to string!";      }    }    public static Image ChangeStringToImage(string pic)    {      try      {        byte[] imageBytes = Convert.FromBase64String(pic);        //读入MemoryStream对象        MemoryStream memoryStream = new MemoryStream(imageBytes, 0, imageBytes.Length);        memoryStream.Write(imageBytes, 0, imageBytes.Length);        //转成图片        Image image = Image.FromStream(memoryStream);        return image;      }      catch (Exception)      {        Image image = null;        return image;      }    }  }