C#读取XML节点内容方法实例简析

http://xieycms.blog.163.com/blog/static/281213902009102035425825/

#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;  } }