XML读取的小例子

  public void CalculateLeave(string userAcount, string xml)   //传过来的是xml内容
        {
            try
            {
                var xmlDoc = new System.Xml.XmlDataDocument();   //生成一个xml操作对象
                xmlDoc.LoadXml(xml);    //加载xml内容文本      注意Load加载的是物理路径
                var xmlRoot = xmlDoc.DocumentElement;        //使用 XmlDocument读取的方法，还有LINQ和XmlTextReader
                if (xmlRoot == null) return;
                var node = xmlRoot.SelectNodes("Item");    //找到所有的Item节点
                if (node == null) return;
                decimal sum = 0;
                foreach (XmlNode xn in node)
                {
                    var singleNode = xn.SelectSingleNode("ExpenseType");  //SelectNodes和SelectSingleNode就是所有和单个的区别
                    if (singleNode == null || singleNode.InnerText != "年休假") continue;
                    var selectSingleNode = xn.SelectSingleNode("Days");
                    if (selectSingleNode == null) continue;
                    var day = selectSingleNode.InnerText;
                    sum += Convert.ToDecimal(day);
                }
                var user = BLL.MasterDataSservice.UserConfigureService.GetInstance().Get(userAcount);

                user.Annualleave = Convert.ToDecimal(user.Annualleave) - sum;
                BLL.MasterDataSservice.UserConfigureService.GetInstance().Update(user);
            }
            catch (Exception)
            {


            }
        }