当前文件路径：XmlStudentSys/App_Code/XmlOp.cs

		            
  1using System;
  2using System.Data;
  3using System.Configuration;
  4using System.Web;
  5using System.Web.Security;
  6using System.Web.UI;
  7using System.Web.UI.WebControls;
  8using System.Web.UI.WebControls.WebParts;
  9using System.Web.UI.HtmlControls;
 10using System.IO;
 11//引用命名空间
 12using System.Xml;
 13//51aspx.c_o_m
 14
 15namespace xmlOp
 16...{
 17    /**//// <summary>
 18    /// xmlOp 类提供对XML文件的读/写/查询/更新/添加/删除 等操作！
 19    /// </summary>
 20    public class XmlOp
 21    ...{
 22        //声明一个XmlDocument空对象
 23        protected XmlDocument doc = new XmlDocument();
 24        public XmlOp(string xmlFile)
 25        ...{
 26            doc.Load(GetXmlFilePath(xmlFile));//载入Xml文档
 27        }
 28        //保存文件
 29        public void Save(string filePath)
 30        ...{
 31            doc.Save(GetXmlFilePath(filePath));
 32        }
 33        //属性查询，返回属性值
 34        public string SelectAttrib(string XmlPathNode, string Attrib)
 35        ...{
 36            string _strNode = "";
 37            _strNode = doc.SelectSingleNode(XmlPathNode).Attributes[Attrib].Value;
 38            return _strNode;
 39        }
 40        // 添加属性
 41        public bool InsertAttrib(string MainNode, string Attrib, string AttribContent)
 42        ...{
 43            try
 44            ...{
 45                XmlElement objNode = (XmlElement)doc.SelectSingleNode(MainNode); //强制转化成XmlElement对象
 46                objNode.SetAttribute(Attrib, AttribContent);    //XmlElement对象添加属性方法    
 47                return true;
 48            }
 49            catch
 50            ...{
 51                return false;
 52            }
 53        }
 54        //节点值查询与判断
 55        public bool SelectNode(string XmlPathNode, int index, string NodeText)
 56        ...{
 57            XmlNodeList _NodeList = doc.SelectNodes(XmlPathNode);
 58            //循环遍历节点，查询是否存在该节点
 59            for (int i = 0; i < _NodeList.Count; i++)
 60            ...{
 61              if (_NodeList[i].ChildNodes[index].InnerText == NodeText)
 62              ...{
 63                  return true;
 64                  break;
 65              }
 66            }
 67            return false;
 68        }
 69        //获取子节点个数
 70        public int NodeCount(string XmlPathNode)
 71        ...{
 72            int i = 0;
 73            try
 74            ...{
 75                i = doc.SelectSingleNode(XmlPathNode).ChildNodes.Count;
 76            }
 77            catch
 78            ...{
 79                i = 0;
 80            }
 81            return i;
 82        }
 83        //插入一个节点，带N个子节点
 84        public bool InsertNode(string MainNode, string ChildNode, string[] Element, string[] Content)
 85        ...{
 86            try
 87            ...{
 88                XmlNode objRootNode = doc.SelectSingleNode(MainNode);    //声明XmlNode对象
 89                XmlElement objChildNode = doc.CreateElement(ChildNode);  //创建XmlElement对象
 90                objRootNode.AppendChild(objChildNode);
 91                for (int i = 0; i < Element.Length; i++)    //循环插入节点元素
 92                ...{
 93                    XmlElement objElement = doc.CreateElement(Element[i]);
 94                    objElement.InnerText = Content[i];
 95                    objChildNode.AppendChild(objElement);
 96                }
 97                return true;
 98            }
 99            catch
100            ...{
101                return false;
102            }
103        }
104        // 根据Xml文件的节点路径，返回一个DataSet数据集
105        public DataSet GetDs(string XmlPathNode)
106        ...{
107            DataSet ds = new DataSet();
108            try
109            ...{
110             StringReader read = new StringReader(doc.SelectSingleNode(XmlPathNode).OuterXml);
111                ds.ReadXml(read);   //利用DataSet的ReadXml方法读取StringReader文件流
112                read.Close();
113            }
114            catch
115            ...{ }
116            return ds;
117        }
118        // 返回Xml文件实际路径
119        public string GetXmlFilePath(string xmlFile)
120        ...{
121            return xmlFile;
122        }
123    }
124}
125
126