base64二進制轉碼圖片和base64String解碼圖片示例，轉碼寫入XML，解碼從XML中讀出展示出

jpg等圖片文件寫入XML，並讀取。以下是winform中 base64轉碼圖片和base64String解碼圖片示例

#region  base64轉碼圖片和base64String解碼圖片
        /// <summary>
        /// 將圖片數據轉換為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>
        /// 將Base64字符串轉換為圖片
        /// </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>
        /// 編碼寫入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("寫入成功");
            }
            else
            {
                MessageBox.Show("無圖片路徑，失敗");
            }
            
        }
        /// <summary>
        /// 解碼展示出
        /// </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\半鋼組態畫面\成型鼓主畫面.png");
            //path = GetStringByString(path);
            if (path != "" && path != null)// && File.Exists(path))
            {
                //picDiagram2.Image = Image.FromFile(path);
                picDiagram2.Image = ToImage(path);
                MessageBox.Show("加載成功");
            }
            //找不到路徑就清空
            else
            {
                picDiagram2.Image = null;
            }
        }
        
        ///// <summary>
        ///// 讀取完整路徑
        ///// </summary>
        //string path = "";
        /// <summary>
        /// 加載圖片
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void picDiagram2_MouseDoubleClick(object sender, MouseEventArgs e)
        {
            OpenFileDialog dialog = new OpenFileDialog();
            dialog.Multiselect = false;//該值確定是否可以選擇多個文件
            //dialog.Title = "請選擇文件夾";
            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

base64二進制轉碼圖片和base64String解碼圖片示例，轉碼寫入XML，解碼從XML中讀出展示出。base64轉碼，base64解碼Winform示例。