新手Xml读写教程

• 写入

  /// <summary>
          /// 创建写入xml
          /// </summary>
          /// <param name="path"></param>
          /// <param name="filename"></param>
          private static void CreateXmlFile( string path,string filename)
          {
              XmlDocument xmlDoc = new XmlDocument();
              //创建类型声明节点  
              XmlDeclaration xdDec = xmlDoc.CreateXmlDeclaration("1.0", "utf-8", null);
              xmlDoc.AppendChild(xdDec);
  
              //创建根节点  
              XmlElement xeRoot = xmlDoc.CreateElement("sheet1_Info");
              //给节点属性赋值
              xeRoot.SetAttribute("version", "1.0");
              xeRoot.SetAttribute("name", filename);
              xmlDoc.AppendChild(xeRoot);
  
              ////创建并添加<CreationInfo></CreationInfo>节点
              XmlElement xeCreationInfo = xmlDoc.CreateElement("CreationInfo");
              xeCreationInfo.SetAttribute("name", "创建信息");
             
              ////创建并添加<CreatedBy></CreatedBy>节点
              XmlElement xeCreatedBy = xmlDoc.CreateElement("CreatedBy");
              xeCreatedBy.InnerText = "Tektronix Course Editor";
              xeCreationInfo.AppendChild(xeCreatedBy);
  
              ////创建并添加<CreatedTime></CreatedTime>节点
              XmlElement xeCreatedTime = xmlDoc.CreateElement("CreatedTime");
              xeCreatedTime.InnerText = DateTime.Now.ToString();
              xeCreationInfo.AppendChild(xeCreatedTime);
              ////创建并添加<SavedTime></SavedTime>节点
              XmlElement xeSavedTime = xmlDoc.CreateElement("SavedTime");
              xeSavedTime.InnerText = DateTime.Now.ToString();
              xeCreationInfo.AppendChild(xeSavedTime);
  
  
              //悬着根节点，追加元素节点信息
              XmlNode xmlSelect = xmlDoc.SelectSingleNode("sheet1_Info");
              if (xmlSelect != null)
              {
                  xmlSelect.AppendChild(xeCreationInfo);
              }
  
              //创建并添加<a></a>节点
              xeRoot = xmlDoc.CreateElement("a");
              if (xmlSelect != null)
              {
                  xmlSelect.AppendChild(xeRoot);
              }
              //创建并添加<b></b>节点
              xeRoot = xmlDoc.CreateElement("b");
              if (xmlSelect != null)
              {
                  xmlSelect.AppendChild(xeRoot);
              }
              //创建并添加<c></c>节点
              xeRoot = xmlDoc.CreateElement("c");
              if (xmlSelect != null)
              {
                  xmlSelect.AppendChild(xeRoot);
              }
              //保存XML文档
              try
              {
                  xmlDoc.Save(path + "\\" + filename + ".xml");//也可以保存其他后缀名
              }
              catch (Exception ep)
              {
                  Console.WriteLine(ep.Message);
              }
          }
  

• 读取

    /// <summary>
          /// 读取xml
          /// </summary>
          /// <param name="xmlfile"></param>
          public static void ReadXml(string xmlfile)
          {
              using (XmlReader reader =  XmlReader.Create(xmlfile))
              {
                  while (reader.Read())
                  {
                      var readNode = reader.Name;
                      Console.WriteLine("当前读取节点:"+ readNode);
                      if (readNode== "CreationInfo")
                      {
                          var attribute = reader.GetAttribute("name");
                          Console.WriteLine("CreationInfo的属性值已经找到：" + attribute);
                      }
                  }
                  
              }
          }