c#读取xml文件

**************************** phone.xml ****************************

<?xml version="1.0" encoding="utf-8" ?>

<PhoneBook>

<phone id="001">

<Name>加菲尔德</Name>

<Number>5555555</Number>

<City>纽约</City>

<DateOfBirth>26/10/1978</DateOfBirth>

</phone>

<phone id="002">

<Name>迈克</Name>

<Number>6666666</Number>

<City>纽约</City>

<DateOfBirth>12/02/1978</DateOfBirth>

</phone>

</PhoneBook>

*********************************************************************

·使用Document读取及写入XML方法

private void xmlfun()

{

XmlDocument doc = new XmlDocument();

doc.Load(Server.MapPath("phone.xml"));

XmlElement node = doc.CreateElement("phone");

XmlAttribute atr = doc.CreateAttribute("id");

atr.InnerText = "003";

node.Attributes.Append(atr);

XmlNode xnode = (XmlNode)doc.CreateElement("Name");

xnode.InnerText="testName";

node.AppendChild(xnode);

xnode = (XmlNode)doc.CreateElement("Number");

xnode.InnerText="119";

node.AppendChild(xnode);

xnode = (XmlNode)doc.CreateElement("City");

xnode.InnerText="cs";

node.AppendChild(xnode);

xnode = (XmlNode)doc.CreateElement("DateOfBirth");

xnode.InnerText="12/02/1978";

node.AppendChild(xnode);

doc.DocumentElement.InsertAfter(node,doc.DocumentElement.LastChild);

doc.Save(Server.MapPath("phone1.xml")); //必须要存为不同的文件

}

·使用XmlTextWriter写入XML方法

private void xmlwriter()

{

XmlTextWriter writer= new XmlTextWriter(Server.MapPath("phone4.xml"),null);

writer.Formatting = Formatting.Indented; //缩进格式

writer.Indentation =4;

writer.WriteStartDocument();

writer.WriteStartElement("Person");

writer.WriteStartAttribute("ID",null);

writer.WriteString("004");

writer.WriteEndAttribute();

writer.WriteStartElement("Name");

writer.WriteString("testWriterName");

writer.WriteEndElement();

writer.WriteStartElement("Number");

writer.WriteString("88888");

writer.WriteEndElement();

writer.WriteStartElement("City");

writer.WriteString("testWriterCity");

writer.WriteEndElement();

writer.Flush();

writer.Close();

}

·使用XmlTextReader读取XML方法

private void xmlread()

{

XmlTextReader reader = new XmlTextReader(Server.MapPath("phone.xml"));

while(reader.Read())

{

if(reader.LocalName.Equals("Name") || reader.LocalName.Equals("Number"))

{

this.Label1.Text += reader.ReadString()+"/t";

}

·作用SqlCommand.ExecuteXmlReader()取得XML

SqlConnecting conn = new SqlConnection(CONNSTR);

SqlCommand cmd = new SqlCommand("select fname from employee for xml auto",conn);

conn.open();

XmlReader reader = cmd.ExecuteXmlReader();

......

################ 所取xml数据格式 #################

<employee fname="aria"/>

<employee fname="carlors"/>......