zoukankan      html  css  js  c++  java
  • 将图片字节数组存储到xml以及从xml读取

    public class RWPhotoXmlUtils
        {
            public  static void WriteXml(string foldName,string fileName,Dictionary<int, byte[]> dict)
            {
                try
                {
                    XElement root = new XElement("Root");
                    foreach (KeyValuePair<int, byte[]> obj in dict)
                    {
                        XElement photo = new XElement("Photo");
                        XElement riderId = new XElement("RiderId", obj.Key);                   
                        string str = System.Convert.ToBase64String(obj.Value);
                        XElement riderPhoto = new XElement("RiderPhoto", str);
                        photo.Add(riderId);
                        photo.Add(riderPhoto);
                        root.Add(photo);
                    }

                    string xmlString = root.ToString();
                    IsolatedStorageUtils.WriteDataToFile(foldName, fileName, xmlString);
                }
                catch (Exception ex)
                {
                    DebugUtils.Debug("Exception occured at RWPhotoXmlUtils.cs WriteXml method:", ex);
                }

            }

            public static Dictionary<int, byte[]> ReadXml(string fileName)
            {
                Dictionary<int, byte[]> dict = new Dictionary<int, byte[]>();
                try
                {
                 
                    string xmlString = IsolatedStorageUtils.ReadDataFromFile(fileName);
                    XElement xml = XElement.Parse(xmlString);            

                    var myCollection = from Photo in xml.Descendants("Photo")
                             select new
                             {
                                 RiderId = Photo.Element("RiderId").Value,
                                 RiderPhoto = Photo.Element("RiderPhoto").Value
                             };

                    foreach (var obj in myCollection)
                    {
                       byte[] bytes =  System.Convert.FromBase64String(obj.RiderPhoto);
                        dict.Add(Int32.Parse(obj.RiderId),  bytes);
                        
                    }


                }
                catch (Exception ex)
                {
                    DebugUtils.Debug("Exception occured at RWPhotoXmlUtils.cs ReadXml method:", ex);
                    
                }
                return dict;

            }     
         
        }

    高山仰止, 景行行止。 四牡鲱鲱, 六辔如琴。 觏尔新婚, 以慰我心。
  • 相关阅读:
    网上购物瘾,你怎么能退出?
    POJ 1006 Biorhythms 中国的法律来解决剩余的正式
    【Android接口实现】PhotoView——单点支持/多图像缩放,实现了触摸
    线程同步synchronized
    阿里云CentOS 6.5 设备、执行Docker容器和步骤的方法
    打破了中国电信华为无线路由猫(HG522-C)自己主动拨号+任意数量的计算机+iTV
    GCC 命令行具体解释
    Nginx 负载均衡
    Linux pipe功能
    Java有用的经验--Swing片
  • 原文地址:https://www.cnblogs.com/davidshi/p/3338572.html
Copyright © 2011-2022 走看看