C # xml operations and C # serialization

For XML: sysproperty. xml

<?xml version="1.0" encoding="utf-8"?><SysProperty><SysContext><NekiProperty propertyName="databaseName" propertyValue="PMSDB" /><NekiProperty propertyName="databaseIP" propertyValue="192.168.1.186" /><NekiProperty propertyName="databasePort" propertyValue="3306" /><NekiProperty propertyName="databaseUser" propertyValue="root" /><NekiProperty propertyName="databasePassword" propertyValue="root" /></SysContext></SysProperty>

 

This article mainly introduces two ways to read and modify this XML,

The first is reading through xmldocument, and the second is serialized reading.

 

I. xmldocument method:

 

1. Read XML and save the attribute name and value of nekiproperty to dictionary.

private const string SYS_PROPERTY = "config\\SysProperty.xml";string totalPath = Path.Combine(Application.StartupPath, SYS_PROPERTY);XmlDocument doc = new XmlDocument();doc.Load(totalPath);XmlNode root = doc.SelectSingleNode("/SysProperty/SysContext");XmlNodeList childrenList = root.ChildNodes;dbMap = new Dictionary<string, string>();foreach (XmlNode temp in childrenList){dbMap.Add(temp.Attributes["propertyName"].Value, temp.Attributes["propertyValue"].Value);}

 

In this way, you can use dbmap ["databasename"] to obtain the corresponding value.

2. Modify and save the values in XML.

foreach (XmlNode temp in childrenList){if (temp.Attributes["propertyValue"].Value == "mysql"){XmlElement xe = temp as XmlElement;xe.SetAttribute("propertyValue", "clothes");break;}}doc.Save(Path.Combine(Application.StartupPath, SYS_PROPERTY));

 

2. perform operations through serialization:

You must first create three classes: sysproperty. CS; syscontext. CS; nekiproperty. CS

 public class SysProperty    {        private SysContext sysContext;         public SysContext SysContext        {            get { return sysContext; }            set { sysContext = value; }        }        public SysProperty LoadProperty(string file)        {            XmlSerializer xs = new XmlSerializer(typeof(SysProperty));            StreamReader sr = new StreamReader(file);            SysProperty sysProperty = xs.Deserialize(sr) as SysProperty;            sr.Close();            return sysProperty;        }        public void saveConfig(string file)        {            XmlSerializer xs = new XmlSerializer(typeof(SysProperty));            StreamWriter sw = new StreamWriter(file);            xs.Serialize(sw, this);            sw.Close();        }        public string getPropertyValue(string propertyName)        {            foreach (NekiProperty property in sysContext)            {                if (property.PropertyName == propertyName)                {                    return property.PropertyValue;                }            }            return string.Empty;        }    }

public class SysContext :List<NekiProperty>    {    }

public class NekiProperty    {        private string propertyName = "";        private string propertyValue = "";        [XmlAttribute("propertyName")]        public string PropertyName        {            get { return propertyName; }            set { propertyName = value; }        }        [XmlAttribute("propertyValue")]        public string PropertyValue        {            get { return propertyValue; }            set { propertyValue = value; }        }        public NekiProperty()        {        }        public NekiProperty(string propertyName, string propertyValue)        {            this.propertyName = propertyName;            this.propertyValue = propertyValue;        }     }

Then you can read the values in the code.

private const string SYS_PROPERTY = "config\\SysProperty.xml";SysProperty sysProperty = new SysProperty().LoadProperty(Path.Combine(SYS_PROPERTY));string ip = sysProperty.getPropertyValue("databaseIP");

 

Note: No exceptions are caught in the code.