部分项目采用的是用xml文件来存储数据的，下面提供一个针对xml相关操作的类XMLHelper。
public class XMLHelper {
//定义XML文件的路径 protected string strXmlFile;
//定义xml文档； protected XmlDocument objXmlDoc = new XmlDocument();
//xmlHelper的构造函数
//参数xmlFile为xml文件的存储路径
//参数 bOverWrite只是是否复写（重新创建xml文档）
//sroot为创建的根元素
public XMLHelper(string XmlFile, Boolean bOverWrite, string sRoot) { try { //如果覆盖模式，则强行创建一个xml文档 if (bOverWrite) { objXmlDoc.AppendChild(objXmlDoc.CreateXmlDeclaration("1.0", "utf-8", null));//设置xml的版本，格式信息 objXmlDoc.AppendChild(objXmlDoc.CreateElement("", sRoot, ""));//创建根元素 objXmlDoc.Save(XmlFile);//保存 } else //否则，检查文件是否存在，不存在则创建 { if (!(File.Exists(XmlFile))) { objXmlDoc.AppendChild(objXmlDoc.CreateXmlDeclaration("1.0", "utf-8", null)); objXmlDoc.AppendChild(objXmlDoc.CreateElement("", sRoot, "")); objXmlDoc.Save(XmlFile); } } objXmlDoc.Load(XmlFile); } catch (System.Exception ex) { throw ex; } strXmlFile = XmlFile; }
/// <summary> /// 根据xPath值，返回xPath下的所有下级子结节到一个DataView /// </summary> /// <param name="XmlPathNode">xPath值</param> /// <returns>有数据则返回DataView，否则返回null</returns> public DataView GetData(string XmlPathNode) { //查找数据。返回一个DataView DataSet ds = new DataSet(); try { StringReader read = new StringReader(objXmlDoc.SelectSingleNode(XmlPathNode).OuterXml); ds.ReadXml(read); return ds.Tables[0].DefaultView; } catch { //throw; return null; } }
/// <summary> /// 更新节点内容 /// </summary> /// <param name="xmlPathNode"></param> /// <param name="content"></param> public void UpdateNode(string xmlPathNode, string content) { objXmlDoc.SelectSingleNode(xmlPathNode).InnerText = content; }
/// <summary> /// 更新节点的某个属性 /// </summary> /// <param name="xmlPathNode">要操作的节点</param> /// <param name="AttribName">属性名</param> /// <param name="AttribValue">属性值</param> public void UpdateNode(string xmlPathNode, string AttribName, string AttribValue) { ((XmlElement)(objXmlDoc.SelectSingleNode(xmlPathNode))).SetAttribute(AttribName, AttribValue); }
/// <summary> /// 修改节点(同步更新内容和属性) /// </summary> /// <param name="xmlPathNode">要操作节点的xpath语句</param> /// <param name="arrAttribName">属性名称字符串数组</param> /// <param name="arrAttribContent">属性内容字符串数组</param> /// <param name="content">节点内容</param> public void UpdateNode(string xmlPathNode, string[] arrAttribName, string[] arrAttribContent, string content) { XmlNode xn = objXmlDoc.SelectSingleNode(xmlPathNode); if (xn != null) { xn.InnerText = content; xn.Attributes.RemoveAll(); for (int i = 0; i <= arrAttribName.GetUpperBound(0); i++) { ((XmlElement)(xn)).SetAttribute(arrAttribName[i], arrAttribContent[i]); } } }
/// <summary> /// 移除选定节点集的所有属性 /// </summary> /// <param name="xmlPathNode"></param> public void RemoveAllAttribute(string xmlPathNode) { XmlNodeList xnl = objXmlDoc.SelectNodes(xmlPathNode); foreach (XmlNode xn in xnl) { xn.Attributes.RemoveAll(); } }
public void DeleteNode(string Node) { //刪除一个节点。 try { string mainNode = Node.Substring(0, Node.LastIndexOf("/")); objXmlDoc.SelectSingleNode(mainNode).RemoveChild(objXmlDoc.SelectSingleNode(Node)); } catch { //throw; return; } }
public void InsertNodeWithChild(string mainNode, string ChildNode, string Element, string Content) { //插入一节点和此节点的一子节点。 XmlNode objRootNode = objXmlDoc.SelectSingleNode(mainNode); XmlElement objChildNode = objXmlDoc.CreateElement(ChildNode); objRootNode.AppendChild(objChildNode);//插入节点 XmlElement objElement = objXmlDoc.CreateElement(Element); objElement.InnerText = Content; objChildNode.AppendChild(objElement);//插入子节点 }
/// <summary> /// 插入一个节点，带一个Attribute和innerText /// </summary> /// <param name="mainNode"></param> /// <param name="Element">节点名称</param> /// <param name="Attrib">Attribute名称</param> /// <param name="AttribContent">Attribute值</param> /// <param name="Content">innerText值</param> public void InsertNode(string mainNode, string Element, string Attrib, string AttribContent, string Content) { XmlNode objNode = objXmlDoc.SelectSingleNode(mainNode); XmlElement objElement = objXmlDoc.CreateElement(Element); objElement.SetAttribute(Attrib, AttribContent); objElement.InnerText = Content; objNode.AppendChild(objElement); }
/// <summary> /// 插入一个节点，带一个Attribute /// </summary> /// <param name="mainNode"></param> /// <param name="Element">节点名称</param> /// <param name="Attrib">Attribute名称</param> /// <param name="AttribContent">Attribute值</param> public void InsertNode(string mainNode, string Element, string Attrib, string AttribContent) { XmlNode objNode = objXmlDoc.SelectSingleNode(mainNode); XmlElement objElement = objXmlDoc.CreateElement(Element); objElement.SetAttribute(Attrib, AttribContent); objNode.AppendChild(objElement); }
/// <summary> /// 插入一个节点 /// </summary> /// <param name="mainNode"></param> /// <param name="Element">节点名称</param> public void InsertNode(string mainNode, string Element) { XmlNode objNode = objXmlDoc.SelectSingleNode(mainNode); XmlElement objElement = objXmlDoc.CreateElement(Element); objNode.AppendChild(objElement); }
//<summary> //插入一个节点，带多个属性和一个inner text //</summary> public void InsertNode(string mainNode, string elementName, string[] arrAttributeName, string[] arrAttributeContent, string elementContent) { try { XmlNode objNode = objXmlDoc.SelectSingleNode(mainNode); XmlElement objElement = objXmlDoc.CreateElement(elementName); for (int i = 0; i <= arrAttributeName.GetUpperBound(0); i++) { objElement.SetAttribute(arrAttributeName[i], arrAttributeContent[i]); } objElement.InnerText = elementContent; objNode.AppendChild(objElement); } catch { throw; //string t = mainNode; } }
///<summary> ///插入一个节点，带多个属性 ///</summary> public void InsertNode(string mainNode, string elementName, string[] arrAttributeName, string[] arrAttributeContent) { try { XmlNode objNode = objXmlDoc.SelectSingleNode(mainNode); XmlElement objElement = objXmlDoc.CreateElement(elementName); for (int i = 0; i <= arrAttributeName.GetUpperBound(0); i++) { objElement.SetAttribute(arrAttributeName[i], arrAttributeContent[i]); } //objElement.InnerText = elementContent; objNode.AppendChild(objElement); } catch { throw; //string t = mainNode; } }
/// <summary> /// 插入子节点(带多个属性) /// </summary> /// <param name="parentNode">要插入的父节点</param> /// <param name="elementName">插入的节点名称</param> /// <param name="arrAttributeName">属性名称[数组]</param> /// <param name="arrAttributeContent">属性内容[数组]</param> /// <param name="elementContent">节点内容</param> public void AddChildNode(string parentNodePath, string elementName, string[] arrAttributeName, string[] arrAttributeContent, string elementContent) { try { XmlNode parentNode = objXmlDoc.SelectSingleNode(parentNodePath); XmlElement objChildElement = objXmlDoc.CreateElement(elementName); for (int i = 0; i <= arrAttributeName.GetUpperBound(0); i++) { objChildElement.SetAttribute(arrAttributeName[i], arrAttributeContent[i]); } objChildElement.InnerText = elementContent; parentNode.AppendChild(objChildElement); } catch { return; }
}
/// <summary> /// 插入子节点(将内容以CData形式写入) /// </summary> /// <param name="parentNode">要插入的父节点</param> /// <param name="elementName">插入的节点名称</param> /// <param name="elementContent">节点内容</param> public void AddChildNodeCData(string parentNodePath, string elementName, string elementContent) { try { XmlNode parentNode = objXmlDoc.SelectSingleNode(parentNodePath); XmlElement objChildElement = objXmlDoc.CreateElement(elementName);
//写入cData数据 XmlCDataSection xcds = objXmlDoc.CreateCDataSection(elementContent);
objChildElement.AppendChild(xcds); parentNode.AppendChild(objChildElement); } catch { return; } }
/// <summary> /// 插入子节点(仅内容，不带属性) /// </summary> /// <param name="parentNode">要插入的父节点</param> /// <param name="elementName">插入的节点名称</param> /// <param name="elementContent">节点内容</param> public void AddChildNode(string parentNodePath, string elementName, string elementContent) { try { XmlNode parentNode = objXmlDoc.SelectSingleNode(parentNodePath); XmlElement objChildElement = objXmlDoc.CreateElement(elementName);
objChildElement.InnerText = elementContent; parentNode.AppendChild(objChildElement); } catch { return; } }
/// <summary> /// 根据xpath值查找节点 /// </summary> /// <param name="NodePath">要查找节点的xpath值</param> /// <returns>找到返回true,否则返回true</returns> public bool FindNode(string NodePath) { try { if (objXmlDoc.SelectSingleNode(NodePath) != null) { return true; } else { return false; } } catch { return false; } }
/// <summary> ///保存文档 /// </summary> public void Save() { //保存文档。 try { objXmlDoc.Save(strXmlFile); } catch (System.Exception ex) { throw ex; } objXmlDoc = null; } }
转载于:https://www.cnblogs.com/jacksong/archive/2012/07/13/xml.html
相关资源：C#读取XML文件并写入数据库