C# 读出XML每个节点的值

[Eric290]

xml文档如下：
<?xml version="1.0" encoding="UTF-8"?>
<packet>
<proto name="geninfo" pos="0" showname="General information" size="1470">
<field name="num" pos="0" show="1" showname="Number" value="1" size="1470"/>
<field name="len" pos="0" show="1470" showname="Packet Length" value="5be" size="1470"/>
<field name="caplen" pos="0" show="1470" showname="Captured Length" value="5be" size="1470"/>
<field name="timestamp" pos="0" show="Mar 25, 2009 11:59:55.676114000" showname="Captured Time" value="1237953595.676114000" size="1470"/>
</proto>
<proto name="frame" showname="Frame 1 (1470 bytes on wire, 1470 bytes captured)" size="1470" pos="0">
<field name="frame.time" showname="Arrival Time: Mar 25, 2009 11:59:55.676114000" size="0" pos="0" show="Mar 25, 2009 11:59:55.676114000"/>
<field name="frame.time_delta" showname="Time delta from previous captured frame: 0.000000000 seconds" size="0" pos="0" show="0.000000000"/>
<field name="frame.time_delta_displayed" showname="Time delta from previous displayed frame: 0.000000000 seconds" size="0" pos="0" show="0.000000000"/>
<field name="frame.time_relative" showname="Time since reference or first frame: 0.000000000 seconds" size="0" pos="0" show="0.000000000"/>
<field name="frame.number" showname="Frame Number: 1" size="0" pos="0" show="1"/>
<field name="frame.pkt_len" showname="Packet Length: 1470 bytes" hide="yes" size="0" pos="0" show="1470"/>
<field name="frame.len" showname="Frame Length: 1470 bytes" size="0" pos="0" show="1470"/>
<field name="frame.cap_len" showname="Capture Length: 1470 bytes" size="0" pos="0" show="1470"/>
<field name="frame.marked" showname="Frame is marked: False" size="0" pos="0" show="0"/>
<field name="frame.protocols" showname="Protocols in frame: eth:ip:udp:data" size="0" pos="0" show="eth:ip:udp:data"/>
</proto>
<proto>
.
.
.
</proto>
</packet>
我想要读取XML每个节点showname和show的值,代码我已经写了，但是显示有问题...
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(@"C:\\wireshark.XML");
XmlNode root = xmlDoc.DocumentElement;
for (int i = 0; i < root.SelectNodes("packet").Count; i++)
{
for (int j = 0; i < root.SelectNodes("packet")[i].SelectNodes("proto").Count;j++ )
{
XmlNode field = root.SelectNodes("packet")[i].SelectNodes("proto")[j].SelectSingleNode("field");
string showname = field.Attributes["showname"].Value;
string show = field.Attributes["show"].Value;
Console.WriteLine(showname);
Console.WriteLine(show);
for (int k = 0; k < root.SelectNodes("packet")[i].SelectNodes("proto")[j].SelectNodes("field")[k].SelectNodes("field").Count; k++)
{
XmlNode fields = root.SelectNodes("packet")[i].SelectNodes("proto")[j].SelectNodes("field")[k].SelectSingleNode("field");
string showname1 = fields.Attributes["showname"].Value;
Console.WriteLine(showname1);
}
}
}

出现的问题是<proto>中有多个<field>但显示出来的只有第一个<field>的showname 和show的值....
希望大虾帮忙

[gxtiou]

SelectSingleNode呀 就是选出单个的意思
SelectNodes

[justindreams]

SelectSingleNode，选单个
SelectNodes，选多个
或者循环读取
或者递归读取

[zhuanshen712]

root.SelectNodes("packet")[i].SelectNodes("proto")[j]这个就是 XmlNode field 了吧?
=======
XmlNode field = root.SelectNodes("packet")[i].SelectNodes("proto")[j].SelectSingleNode("field");
改成:XmlNode field = root.SelectNodes("packet")[i].SelectNodes("proto")[j];
试试看

[linaren]

XmlNodeList fields = root.SelectNodes("packet")[i].SelectNodes("proto")[j].SelectNodes("field");

[我姓区不姓区]

            XmlDocument doc = new XmlDocument();
            doc.Load("C:\\wireshark.XML");
            foreach (XmlNode node in doc.GetElementsByTagName("proto"))
            {
                foreach (XmlNode xn in node.ChildNodes)
                {
                    Console.WriteLine(xn.Attributes["showname"].Value + "," + xn.Attributes["show"].Value);
                }
            }

[jcyluck]

            XmlDocument xmlDoc = new XmlDocument();
            xmlDoc.Load(@"C:\\wireshark.XML");
            XmlNode root = xmlDoc.DocumentElement;
            for (int i = 0; i < root.SelectNodes("packet").Count; i++)
            {
                int ch=root.SelectNodes("packet")[i].ChildNodes.Count;
                for (int j = 0; i < ch; j++)
                {
                    XmlNode field = root.SelectNodes("packet")[i].ChildNodes[j];
                    string showname = field.Attributes["showname"].Value;
                    string show = field.Attributes["show"].Value;
                    Console.WriteLine(showname);
                    Console.WriteLine(show);
                    int ch1 = field.ChildNodes.Count;
                    for (int k = 0; k < ch1; k++)
                    {
                        XmlNode fields = field.ChildNodes[k];
                        string showname1 = fields.Attributes["showname"].Value;
                        Console.WriteLine(showname1);
                    }
                }
            }

如何你的XML文件确定只有两层可以用你的方法
如果不能确定节点的级别，建议你用递归

[zhuanshen712]

XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(@"C:\\wireshark.XML");
XmlElement root = xmlDoc.DocumentElement;
for (int i = 0; i < root.GetElementsByTagName("proto").Count; i++) //得到TagName为proto的节点数组
{
XmlNode par=root.GetElementsByTagName("proto")[i];//这个数组的每一项（即：一个proto节点）
for (int j = 0; j < par.ChildNodes.Count;j++ )//遍历每一个proto节点的孩子节点
{
XmlNode field = par.ChildNodes[j];//得到proto节点的第j各孩子节点，既为field节点
string showname = field.Attributes["showname"].Value;
string show = field.Attributes["show"].Value;
Console.WriteLine(showname);
Console.WriteLine(show);
}

}

[Eric290]

<field>下面还有<field>子节点
像
<field name="udp.checksum" showname="Checksum: 0xa147 [validation disabled]" size="2" pos="40" show="0xa147" value="a147">
<field name="udp.checksum_good" showname="Good Checksum: False" size="2" pos="40" show="0" value="a147"/>
<field name="udp.checksum_bad" showname="Bad Checksum: False" size="2" pos="40" show="0" value="a147"/>
</field>
又该继续循环...希望完善

[Eric290]

<packet>包不是只有一个，有多个数据包
算下来还要加循环

[wesleyluo]

顶起，学习下。

[cppfaq]

有Xsd约束文档结构么？

[wuyq11]

递归实现循环查询值

[yooyoozoo]

SelectNodes

[我姓区不姓区]

[Quote=引用 9 楼 youliting290 的回复:]
<packet>包不是只有一个，有多个数据包
算下来还要加循环
[/Quote]
递归一下不就好了:

        static void Main(string[] args)
        {
            XmlDocument doc = new XmlDocument();
            doc.Load("C:\\wireshark.XML");
            foreach (XmlNode node in doc.GetElementsByTagName("packet"))
                GetNodes(node);
        }

        static void GetNodes(XmlNode node)
        {
            if (node.Attributes["showname"] != null && node.Attributes["show"] != null)
                Console.WriteLine("{0},{1}", node.Attributes["showname"].Value, node.Attributes["show"].Value);
            foreach (XmlNode xn in node.ChildNodes)
                GetNodes(xn);
        }

[DREAM_LSQ]

XmlNodeList xmlNL = doc.SelectNodes(@"//field");//读出所有field元素

foreach(XmlNode xmlN in xmlNL) //遍历所有field元素,把属性值显示出来
{
Console.WriteLine(xmlN.Attribute["showname"].value.toString()+" "+ xmlN.Attribute["show"].value.toString());

}

[Teng_s2000]

黑压压的一片，还不知道xml是否封闭

[lfywy]

楼上都有答案了

[Eric290]

谢谢大家啊....

[shanshuang0818]

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