base64二进制转码图片和base64String解码图片示例，转码写入XML，解码从XML中读出展示出

jpg等图片文件写入XML，并读取。以下是winform中 base64转码图片和base64String解码图片示例

#region  base64转码图片和base64String解码图片
        /// <summary>
        /// 将图片数据转换为Base64字符串
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        public string ToBase64(Image image)
        {
            Image img = image;

            BinaryFormatter binFormatter = new BinaryFormatter();

            MemoryStream memStream = new MemoryStream();

            binFormatter.Serialize(memStream, img);

            byte[] bytes = memStream.GetBuffer();

            string base64 = Convert.ToBase64String(bytes);

            return base64;
        }

        /// <summary>
        /// 将Base64字符串转换为图片
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>

        private Image ToImage(string base64string)
        {
            string base64 = base64string;

            byte[] bytes = Convert.FromBase64String(base64);

            MemoryStream memStream = new MemoryStream(bytes);

            BinaryFormatter binFormatter = new BinaryFormatter();

            Image img = (Image)binFormatter.Deserialize(memStream);

            return img;

        }
        /// <summary>
        /// 编码写入XML
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnToBase64_Click(object sender, EventArgs e)
        {
            XmlHandler XH = new XmlHandler();
            if (this.picDiagram2.Image != null)
            {
                path = ToBase64(this.picDiagram2.Image);
                //path = GZipCompressString(path);
                XH.UpdateNodeValueToXML(imagePathFlag, path);
                MessageBox.Show("写入成功");
            }
            else
            {
                MessageBox.Show("无图片路径，失败");
            }
            
        }
        /// <summary>
        /// 解码展示出
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnToImage_Click(object sender, EventArgs e)
        {
            XmlHandler XH = new XmlHandler();
            imagePathFlag = "351";
            path = XH.GetConfigValue(imagePathFlag, @"C:\Users\SunRongzhen\Desktop\半钢组态画面\成型鼓主画面.png");
            //path = GetStringByString(path);
            if (path != "" && path != null)// && File.Exists(path))
            {
                //picDiagram2.Image = Image.FromFile(path);
                picDiagram2.Image = ToImage(path);
                MessageBox.Show("加载成功");
            }
            //找不到路径就清空
            else
            {
                picDiagram2.Image = null;
            }
        }
        
        ///// <summary>
        ///// 读取完整路径
        ///// </summary>
        //string path = "";
        /// <summary>
        /// 加载图片
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void picDiagram2_MouseDoubleClick(object sender, MouseEventArgs e)
        {
            OpenFileDialog dialog = new OpenFileDialog();
            dialog.Multiselect = false;//该值确定是否可以选择多个文件
            //dialog.Title = "请选择文件夹";
            dialog.Filter = "Image files (*.jpg;*.bmp;*.gif)|*.jpg*.jpeg;*.gif;*.bmp|AllFiles (*.*)|*.*";// "Jpg |*.jpg|Bmp |*.bmp|Gif |*.gif|Png |*.png|Wmf  |*.wmf";// "所有文件(*.*)|*.*";
            if (dialog.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {
                path = dialog.FileName;
                picDiagram2.Image = Image.FromFile(path);
            }
        }
        #endregion

base64二进制转码图片和base64String解码图片示例，转码写入XML，解码从XML中读出展示出。base64转码，base64解码Winform示例。