如何动态生成一个xml格式的字符串，并对此串进行添加、删除的操作？

[Blue_moon]

我想生成一个类似于以下格式的xml串（存在数据库中）：
<TREENODES>
<TREENODE ID="1" Name="合同文档">
<TREENODE Name="合同1" />
</TREENODE>
</TREENODES>
可以进行添加子节点操作，如添加一个<TREENODE Name="合同2" />后，xml串为：
<TREENODES>
<TREENODE ID="1" Name="合同文档">
<TREENODE Name="合同1" />
<TREENODE Name="合同2" />
</TREENODE>
</TREENODES>
可以删除子节点，可以修改某个子节点的属性，如何实现呢？（最好有代码）谢谢！

[saucer]

play with:


using System;
using System.Xml;

XmlDocument doc = new XmlDocument();
XmlElement e = doc.CreateElement("TREENODES");
doc.AppendChild(e);

XmlElement e2 = doc.CreateElement("TREENODE");
e.AppendChild(e2);

e2.SetAttribute("ID","1");
e2.SetAttribute("Name","合同文档");

XmlElement e3 = doc.CreateElement("TREENODE");
e2.AppendChild(e3);
e3.SetAttribute("Name","合同1");

string sXml = doc.InnerXml;
Response.Write(sXml);

doc = new XmlDocument();
doc.LoadXml(sXml);

XmlElement ex = (XmlElement)doc.SelectSingleNode("TREENODES/TREENODE");
//XmlElement ex = (XmlElement)doc.SelectSingleNode("TREENODES/TREENODE[@Name = '合同文档']");
//XmlElement ex = (XmlElement)doc.SelectSingleNode("TREENODES/TREENODE[@ID='1' and @Name = '合同文档']");

if (ex != null)
{
XmlElement ey = doc.CreateElement("TREENODE");
ey.SetAttribute("Name","合同2");
ex.AppendChild(ey);
}

sXml = doc.InnerXml;
Response.Write(sXml);

doc = new XmlDocument();
doc.LoadXml(sXml);

ex = (XmlElement)doc.SelectSingleNode("//TREENODE[@Name = '合同2']");
if (ex != null)
ex.ParentNode.RemoveChild(ex);

sXml = doc.InnerXml;
Response.Write(sXml);

[gOODiDEA]

XmlTextWriter textWriter = new XmlTextWriter( m_XmlFile, null );
textWriter.WriteStartDocument();
textWriter.WriteStartElement("chartdatalist");
textWriter.WriteStartElement("chartdataisland");
for ( int i = 0; i < RowNum; i++ )
{
for ( int j = 0; j < CellNum; j++ )
{
textWriter.WriteStartElement("chartdata", "");

textWriter.WriteStartElement( "x" );
textWriter.WriteString( i.ToString() );
textWriter.WriteEndElement();
textWriter.WriteStartElement( "y" );

textWriter.WriteString( "ssssssssssssssss" );
textWriter.WriteEndElement();
textWriter.WriteStartElement( "color" );
textWriter.WriteString( "xxx" );
textWriter.WriteEndElement();

textWriter.WriteEndElement();
}
}
textWriter.WriteEndElement();
textWriter.WriteEndElement();
textWriter.WriteEndDocument();
textWriter.Close();

[liuzhonghe]

看sdk里关于XmlDocument和XmlTextWriter类里的例子，里面的例子很详细了，如果你熟javascript的话，一看就知道了。

[xueqs]

up

[alphawin]

datagrid 就是XML格式的

[bpy]

学习