C#读取XML节点内容方法实例简析（ZZ）

#读取XML节点内容方法实例入手让我们来看看C#读取XML节点的实现：

1. using    System;     
2.    using    System.Xml;     
3.    using    System.Xml.XPath;     
4.    using    System.Data;     
5.       
6.    class    ReadXML     
7.    {     
8.        public    static    void    Main()     
9.        {     
10.    string    sFile    =    "ReadXml.xml";     
11.       
12.    //C#读取XML节点method    1     
13.    XmlDocument    doc    =    new    XmlDocument();     
14.    doc.Load(sFile);     
15.    XmlNode    node    =    doc.DocumentElement["News"]["Content"];     
16.    Console.WriteLine(node.InnerText);     
17.       
18.    //C#读取XML节点method2     
19.    node    =    doc.SelectSingleNode("//Content");     
20.    Console.WriteLine(node.InnerText);     
21.       
22.    //similarly     
23.    node    =    doc.DocumentElement.SelectSingleNode("News/Content");     
24.    Console.WriteLine(node.InnerText);     
25.       
26.    //C#读取XML节点method    3     
27.    DataSet    ds    =    new    DataSet();     
28.    ds.ReadXml(sFile);     
29.    Console.WriteLine(ds.Tables[0].Rows[0]["Content"].ToString());     
30.       
31.    //C#读取XML节点method    4     
32.    XmlTextReader    reader    =    new    XmlTextReader(sFile);     
33.    while    (reader.Read())     
34.    {     
35.    if    (reader.Name    ==    "Content")     
36.    {     
37.    Console.WriteLine("***"    +    reader.ReadString());     
38.    break;     
39.    }     
40.    }     
41.       
42.    reader.Close();     
43.       
44.    //C#读取XML节点method    5     
45.       
46.    XPathDocument    xpdoc    =    new    XPathDocument(sFile);     
47.    XPathNavigator    xpnv    =    xpdoc.CreateNavigator();     
48.    xpnv.MoveToFirstChild();     
49.    xpnv.MoveToFirstChild();     
50.    xpnv.MoveToFirstChild();     
51.    xpnv.MoveToNext();xpnv.MoveToNext();xpnv.MoveToNext();     
52.    Console.WriteLine("pathnavigator:"    +    xpnv.Value);     
53.        }     
54.    } 

我的方法

string newQiChar=DateTime.Now .ToString ("yyMMdd");    
    string phyPath = AppDomain.CurrentDomain.BaseDirectory;    
    string name = "config.xml";
    string configPath = Path.Combine(phyPath, name); 
 SaveConfigXml (configPath,newQi,newQiChar);

/// <summary>
  /// 保存配置文件
  /// </summary>
  /// <param name="savePath">文件路径</param>
  /// <param name="qishu">int型期数</param>
  /// <param name="qishuChar">字符串型期数</param>
  /// <returns></returns>
  public static bool SaveConfigXml(string savePath,int qishu,string qishuChar)
  {
   bool flag = false;
   try
   {
    XmlDocument doc = new XmlDocument();
    bool exists = System.IO.File.Exists(savePath);
    if (!exists)
    {//生成        
     doc.LoadXml("<Configs></Configs>");               //创建根结点  MaxQishu   
     XmlNode root = doc.SelectSingleNode("Configs");
     XmlElement MaxQishu = doc.CreateElement("MaxQishu");
     MaxQishu.SetAttribute("id", "qishu");
     MaxQishu.SetAttribute("value", qishu.ToString());
     MaxQishu.SetAttribute("text", qishuChar);
     root.AppendChild(MaxQishu);
     doc.Save(savePath);
    }
    else
    {//修改
     doc.Load(savePath);
     XmlElement xe = (XmlElement)doc.SelectSingleNode("Configs/MaxQishu");
     if (xe != null)
     {
      xe.SetAttribute("id", "qishu");
      xe.SetAttribute("value", qishu.ToString());
      xe.SetAttribute("text", qishuChar);
      doc.Save(savePath); //保存 
     }

    }
    flag = true;
   }
   catch (Exception ex)
   {
    flag = false;
   }
   return flag;
  }

 
  /// <summary>
  /// 从配置文件中读取期数
  /// </summary>
  /// <param name="savePath"></param>
  /// <param name="type">1-int数字类型期数，0-字符串类型期数</param>
  /// <returns></returns>
  public static object ReadMaxQishuFromXml(string savePath, int type)
  {
   object result = string.Empty;
   try
   {
    XmlDocument doc = new XmlDocument();
    bool exists = System.IO.File.Exists(savePath);
    if (exists)
    {//存在        
     doc.Load(savePath);
     #region 
     /*
     string xpathPath = "";
     if (type == 1)
     {//数字期数
      xpathPath = "Configs/MaxQishu/value";
     }
     else
     {
      xpathPath = "Configs/MaxQishu/text";
     }
     XmlNode node = (XmlNode)doc.SelectSingleNode(xpathPath);
     result = node.InnerText;
      * */
     #endregion
               
     XmlElement xe = (XmlElement)doc.SelectSingleNode("Configs/MaxQishu");
     string name = xe.Name;
     string value = xe.Value;
     if (type == 1)
     {
      result = xe.GetAttribute("value");
     }
     else
     {
      result = xe.GetAttribute("text");
     }    
    }

   }
   catch (Exception ex)
   {
   }
   return result;
  }
 }