C#針對xml根本操作及保留設置裝備擺設文件運用實例。本站提示廣大學習愛好者：（C#針對xml根本操作及保留設置裝備擺設文件運用實例）文章只能為提供參考，不一定能成為您想要的結果。以下是C#針對xml根本操作及保留設置裝備擺設文件運用實例正文
本文實例講述了C#針對xml的根本操作及保留設置裝備擺設文件運用，分享給年夜家供年夜家參考。詳細辦法以下：
引言：這裡起首引見了xml的根本操作，前面寫了一個常常用到的xml保留設置裝備擺設文件的實例。
xml經常使用辦法：
界說xml文檔：XmlDocument xmlDoc = new XmlDocument();
初始化xml文檔：xmlDoc.Load("D:\\book.xml");//找到xml文件
創立根元素：XmlElement xmlElement = xmlDoc.CreateElement("", "Employees", "");
創立節點：XmlElement xeSub1 = xmlDoc.CreateElement("title");
查找Employees節點：XmlNode root = xmlDoc.SelectSingleNode("Employees");
添加節點：xe1.AppendChild(xeSub1);
更改節點的屬性：xe.SetAttribute("Name", "李明明");
移除xe的ID屬性：xe.RemoveAttribute("ID");
刪除節點title：xe.RemoveChild(xe2);
1 創立xml文檔
由於比擬簡略，直接寫辦法及成果。
public void CreateXMLDocument()
{
XmlDocument xmlDoc = new XmlDocument();
//參加XML的聲明段落,<?xml version="1.0" encoding="gb2312"?>
XmlDeclaration xmlDeclar;
xmlDeclar = xmlDoc.CreateXmlDeclaration("1.0", "gb2312", null);
xmlDoc.AppendChild(xmlDeclar);
//參加Employees根元素
XmlElement xmlElement = xmlDoc.CreateElement("", "Employees", "");
xmlDoc.AppendChild(xmlElement);
//添加節點
XmlNode root = xmlDoc.SelectSingleNode("Employees");
XmlElement xe1 = xmlDoc.CreateElement("Node");
xe1.SetAttribute("Name", "李明");
xe1.SetAttribute("ISB", "2-3631-4");
//添加子節點
XmlElement xeSub1 = xmlDoc.CreateElement("title");
xeSub1.InnerText = "進修VS";
xe1.AppendChild(xeSub1);
XmlElement xeSub2 = xmlDoc.CreateElement("price");
xe1.AppendChild(xeSub2);
XmlElement xeSub3 = xmlDoc.CreateElement("weight");
xeSub3.InnerText = "20";
xeSub2.AppendChild(xeSub3);
root.AppendChild(xe1);
xmlDoc.Save("D:\\book.xml");//保留的途徑
}
成果：
<?xml version="1.0" encoding="GB2312"?>
-<Employees>-
<Node ISB="2-3631-4" Name="李明">
<title>進修VS</title>-
<price>
<weight>20</weight>
</price>
</Node>
</Employees>
2 增長節點
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load("D:\\book.xml");//找到xml文件
XmlNode root = xmlDoc.SelectSingleNode("Employees");//查找Employees節點
XmlElement xe1 = xmlDoc.CreateElement("Node2");//添加Node2節點
xe1.SetAttribute("Name", "張三");
XmlElement xeSub1 = xmlDoc.CreateElement("title");//界說子節點
xeSub1.InnerText = "心境好";
xe1.AppendChild(xeSub1);//添加節點到Node2
root.AppendChild(xe1);//添加節點到Employees
xmlDoc.Save("D:\\book.xml");
成果：
<?xml version="1.0" encoding="GB2312"?>
-<Employees>
-<Node ISB="2-3631-4" Name="李明">
<title>進修VS</title>-
<price>
<weight>20</weight>
</price>
</Node>-
<Node2 Name="張三">
<title>心境好</title>
</Node2>-
<Node2 Name="張三">
<title>心境好</title>
</Node2>
</Employees>
3 修正節點：
public void ModifyNode()
{
XmlDocument xmlDocument = new XmlDocument();
xmlDocument.Load("D:\\book.xml");
XmlNodeList nodeList = xmlDocument.SelectSingleNode("Employees").ChildNodes;//獲得Employees節點的一切子節點
foreach (XmlNode xn in nodeList)//遍歷
{
XmlElement xe = (XmlElement)xn;
if (xe.GetAttribute("Name") == "李明")
{
xe.SetAttribute("Name", "李明明");//更改節點的屬性
XmlNodeList xnl = xe.ChildNodes;//獲得xe的一切子節點
foreach (XmlNode xn1 in xnl)
{
XmlElement xe2 = (XmlElement)xn1;//將節點xn1的屬性轉換為XmlElement
if (xe2.Name == "title")//找到節點名字為title的節點
{
xe2.InnerText = "明天氣象欠好";
}
if (xe2.Name == "price")
{
XmlNodeList xnl2 = xe2.ChildNodes;
foreach (XmlNode xn2 in xnl2)
{
if (xn2.Name == "weight")
{
xn2.InnerText = "88";
}
}
}
}
}
}
xmlDocument.Save("D:\\book2.xml");
}
運轉成果:
<?xml version="1.0" encoding="GB2312"?>
-<Employees>
-<Node ISB="2-3631-4" Name="李明明">
<title>明天氣象欠好</title>-<price>
<weight>88</weight>
</price>
</Node>
-<Node2 Name="張三">
<title>心境好</title>
</Node2></Employees>
4 刪除節點：
public void DeleteNode()
{
XmlDocument xmlDocument = new XmlDocument();
xmlDocument.Load("D:\\book1.xml");
XmlNodeList xnl = xmlDocument.SelectSingleNode("Employees").ChildNodes;
foreach (XmlNode xn in xnl)
{
if (xn.Name == "Node")
{
XmlElement xe = (XmlElement)xn;//將xn的屬性轉換為XmlElement
xe.RemoveAttribute("ID");//移除xe的ID屬性
XmlNodeList xnl2 = xe.ChildNodes;
for (int i = 0; i < xnl2.Count; i++)
{
XmlElement xe2 = (XmlElement)xnl2.Item(i);
if (xe2.Name == "title")
{
xe.RemoveChild(xe2);//刪除節點title
}
}
}
}
xmlDocument.Save("D:\\book3.xml");
}
成果：
<?xml version="1.0" encoding="GB2312"?>
-<Employees>
-<Node ISB="2-3631-4" Name="李明">-<price>
<weight>20</weight>
</price>
</Node>-
<Node2 Name="張三">
<title>心境好</title>
</Node2>-
<Node2 Name="張三">
<title>心境好</title>
</Node2>
</Employees>
後面引見了xml的創立、節點的添加、節點的修正和刪除，上面以寫的一個保留項目設置裝備擺設文件的小例子。
舉例解釋：
起首在項目文件中創立一個xml文檔：
<?xml version="1.0" encoding="utf-8" ?>
<configurationN>
<ServerAddress>1143</ServerAddress>
<ID>192.168</ID>
</configurationN>
在保留設置裝備擺設文件時，最重要應用了兩個辦法：Load和Save。
Load：初始化xml文檔，以便項目文件獲得詳細的xml節點的值。
public void Load(string path)
{
try
{
XmlDocument xmlDocument = new XmlDocument();
xmlDocument.Load(path);
XmlNodeList xnl = xmlDocument.SelectSingleNode(managerNode).ChildNodes;
foreach (XmlNode xn in xnl)
{
if (xn.Name == configuration_ServerAddress)
{
ServerAddress = xn.InnerText;
}
}
}
catch(Exception ex)
{ }
}
Save：在項目體系中停止修正設置裝備擺設文件值後，須要對xml停止從新保留
public void Save(string path)
{
try
{
XmlDocument xmlDocument = new XmlDocument();
xmlDocument.Load(path);
XmlNodeList xnl = xmlDocument.SelectSingleNode(managerNode).ChildNodes;
foreach (XmlNode xn in xnl)
{
if (xn.Name == configuration_ServerAddress)
{
xn.InnerText = ServerAddress;
}
}
xmlDocument.Save(path);
}
catch (Exception ex)
{ }
}
此處將一切代碼都貼出來，便利下次完成。由於項目是WPF文件，並且都是簡略控件，所以只貼出後台代碼。
class ConfigurationManager:INotifyPropertyChanged
{
public const string managerNode = "configurationN";//根節點
public const string configuration_ServerAddress = "ServerAddress";//子節點
private string _ServerAddress;
public string ServerAddress
{
get { return _ServerAddress; }
set
{
_ServerAddress = value;
NotifyPropertyChanged("ServerAddress");
}
}
public void Load(string path)
{
try
{
XmlDocument xmlDocument = new XmlDocument();
xmlDocument.Load(path);
XmlNodeList xnl = xmlDocument.SelectSingleNode(managerNode).ChildNodes;
foreach (XmlNode xn in xnl)
{
if (xn.Name == configuration_ServerAddress)
{
ServerAddress = xn.InnerText;
}
}
}
catch(Exception ex)
{ }
}
public void Save(string path)
{
try
{
XmlDocument xmlDocument = new XmlDocument();
xmlDocument.Load(path);
XmlNodeList xnl = xmlDocument.SelectSingleNode(managerNode).ChildNodes;
foreach (XmlNode xn in xnl)
{
if (xn.Name == configuration_ServerAddress)
{
xn.InnerText = ServerAddress;
}
}
xmlDocument.Save(path);
}
catch (Exception ex)
{ }
}
public event PropertyChangedEventHandler PropertyChanged;
private void NotifyPropertyChanged(string propertyName)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
}
public static ConfigurationManager Instance = new ConfigurationManager();
}
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
Start();
this.tb1.Text = ConfigurationManager.Instance.ServerAddress.ToString();
}
private string path = "CONFIG\\System.xml";
private void button1_Click(object sender, RoutedEventArgs e)
{
ConfigurationManager.Instance.ServerAddress = this.tb1.Text;
ConfigurationManager.Instance.Save(path);
}
private void button2_Click(object sender, RoutedEventArgs e)
{
Application.Current.Shutdown();
}
private void Start()
{
ConfigurationManager.Instance.Load(path);
}
}
願望本文所述對年夜家的C#法式設計有所贊助。
