关于用C#对一树型的XML树型文件的操作

[IT_Fish]

麻烦大家能不能帮我看看一个树型的XML文件的相关操作
XML因为比较复杂,所以我放在下面的地址,麻烦各位下载看下

http://www.szqyjy.com/TEMP/XML.rar

现在我的难点是怎么对其数据进行操作:
1.添加一个新的实例到XML中;
2.对树型XML中的某个实例的节点的增减

我参考了些资料,可是还是没法下手,不得已,只能寻求下帮助,请各位帮忙看看.

如果分不够我可以再开.谢谢了.

[xiaoliangwh]

up

[haoya1]

Xml.XmlElement已经提供了大量操作XML的方法，要操作XML首选是要懂得xPath

[zzzapple]

试试将XML反序列化为一个对象，对对象进行你要的操作，再序列化回XML

[wangsaokui]

using System;
using System.Xml.Serialization;
using System.Xml;
using System.IO;

namespace XMLOperate
{
class Class1
{
[STAThread]
static void Main(string[] args)
{
try
{
// XmlTextWriter writer = new XmlTextWriter("coil.xml", null);
// writer.Formatting = Formatting.Indented;
// writer.WriteStartElement("coils");
// writer.WriteEndElement();
// writer.Flush();
// writer.Close();

XmlDocument doc = new XmlDocument();
doc.Load("coil.xml");
XmlElement root = doc.DocumentElement;

// Add_Node(doc,root);
Query_Node(root);
//Delete_Node(doc,root);
// Console.WriteLine("Begin....................");
show_child_node(root);
// Console.WriteLine("End......................");
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
finally
{
Console.ReadLine();
}
}

public static void Add_Node(XmlDocument doc, XmlNode root)
{
XmlElement masterelem = doc.CreateElement("coil");
root.AppendChild(masterelem);

XmlElement detailelem = doc.CreateElement("coil_id");
detailelem.InnerText="A131";
masterelem.AppendChild(detailelem);

Console.WriteLine("sucessful 1");

detailelem = doc.CreateElement("coil_length");
detailelem.InnerText="12345";
masterelem.AppendChild(detailelem);

Console.WriteLine("sucessful 2");

detailelem = doc.CreateElement("coil_width");
detailelem.InnerText="1780";
masterelem.AppendChild(detailelem);

detailelem = doc.CreateElement("coil_thickness");
detailelem.InnerText="500";
masterelem.AppendChild(detailelem);

detailelem = doc.CreateElement("coil_weight");
detailelem.InnerText="21345";
masterelem.AppendChild(detailelem);

doc.Save("coil.xml");

Console.WriteLine("append finish!");
}

public static bool Query_Node(XmlNode rootNode)
{

XmlNode elem = rootNode.SelectSingleNode("descendant::coil[coil_id='A131']");
if (elem!=null)
{
Console.WriteLine(elem.ChildNodes[1].InnerText.ToString());
return true;
}
else
{
Console.WriteLine("not found node");
return false;
}
}

public static void Delete_Node(XmlDocument doc, XmlNode rootNode)
{
if (Query_Node(rootNode))
{
XmlNode elem = rootNode.SelectSingleNode("descendant::coil[coil_id='A121']");
elem.RemoveAll();
doc.Save("coil.xml");

Console.WriteLine("already delete from xml file");
}
}

public static void show_child_node(XmlNode Node)
{
if (Node.HasChildNodes)
{
for (int i=0; i<Node.ChildNodes.Count; i++)
{
Console.WriteLine(Node.ChildNodes[i].Name + "--" + Node.ChildNodes[i].InnerText.ToString());
show_child_node(Node.ChildNodes[i]);
}
}
}
}
}

相应的XML见下:
<coils>
<coil>
<coil_id>A135</coil_id>
<coil_length>12345</coil_length>
<coil_width>1780</coil_width>
<coil_thickness>500</coil_thickness>
<coil_weight>21345</coil_weight>
</coil>
<coil>
<coil_id>A131</coil_id>
<coil_length>12345</coil_length>
<coil_width>1780</coil_width>
<coil_thickness>500</coil_thickness>
<coil_weight>21345</coil_weight>
</coil>
</coils>

[wangsaokui]

这个例子涉及了添加、删除、查询，基本上可以满足你的需求，你的XML我没有时间看，自己改改吧

[IT_Fish]

忘了说下,我是用在WinForm下开发的

[IT_Fish]

谢谢大家，结贴！