xpath 只选择相关节点

Question

嗨，我有一些 xml 文件，我正在尝试通过从 xml 中获取“mapfile”属性值（如下所示）来使用 xpath，然后从外部 mapfile 中获取所有“key”值，我没问题。

然后我需要从下面的 xml 文件中获取与此映射文件相对应的所有“关键”数字。问题是我可以将它们全部取出，但我需要取出它们并单独检查每个文件，而不是全部。

xml 被分成“listsections”，每个“listsection”都有一个映射文件。我想对照地图文件中的“键”值检查“列表部分”中的“键”值。

所以我尝试的是

//get the list of mapfiles
XmlNodeList mapfiles = xmlDoc.SelectNodes("//a:listsection/a:views/a:explodeddiagram", nsmgr);

//get the mapfiles
foreach (XmlNode mapfile in mapfiles)
{
            string mapfilename = mapfile.Attributes["mapfile"].Value;

        //load the mapfile and read it and get the key values from it.
        XmlDocument xmlDockey = new XmlDocument();
        xmlDochot.Load(parentdir + "\\" + mapfilename);
        XmlNodeList xmlkeyfrommapfile = xmlDockey.SelectNodes("//*[name()='area'][@key]");

        foreach (XmlNode keynode in xmlkeyfrommapfile)
        {
                string keyTextmapfile = keynode.Attributes["key"].Value;
                //So here i've got all the values I need for each "mapfile"
                list1.Add(keyTextmapfile );
        }

}

 //now I get the values of the "key" from the xml file (xml shown below)
 //get the values for the keys from the list file (xml shown below)
 XmlNodeList keysfromlistfile = xmlDoc.SelectNodes("//*[name()='key']");
 foreach (XmlNode keyfromlistfile in keysfromlistfile)
 {
                            string keyTextlistfile = keyfromlistfile.InnerText;
                            list2.Add(keyTextlistfile);
 }

重申一下：我明白了。我只想检查每个文件中同一“listsection”中的“key”值有多个“listsections”有时超过 20 个。

<Thislist>
 <listsection>
  <views>
   <explodeddiagram title="Some image title1" graphicfile="SomeFilename1.tif" mapfile="SomeFilename1.xml" />
  </views>
   <rows>
    <row>
     <key>1</key>
     <remark>(Generic Remark 1)</remark>
        <part>
         <number>25376.0000</number>
         <description>Generic Description</description>
       </part>
     <qty>1</qty>
    </row>
    <row>
    <key>2</key>
     <remark>(Generic Remark 4)</remark>
        <part>
        <number>253767890002</number>
        <description>Generic Description</description>
       </part>
     <qty>1</qty>
    </row>
    <row>
     <key>2</key>
     <remark>(Generic Remark 3)</remark>
       <part>
        <number>253764560001</number>
        <description>Generic Description</description>
       </part>
     <qty>1</qty>
    </row>
    <row>
     <key>3</key>
     <remark>(Generic Remark 5)</remark>
       <part>
        <number>209213231004</number>
        <description>Generic Description</description>
       </part>
     <qty>1</qty>
    </row>
   </rows>
 </listsection>
<listsection>
  <views>
    <explodeddiagram title="Some image title2" graphicfile="SomeFilename2.tif" mapfile="SomeFilename2.xml" />
  </views>
   <rows>
    <row>
     <key>1</key>
     <remark>(Generic Remark 6)</remark>
       <part>
        <number>25376656560000</number>
        <description>Cover Assy, Top SST</description>
       </part>
     <qty>1</qty>
    </row>
    <row>
     <key>2</key>
     <remark>(Generic Remark 7)</remark>
       <part>
        <number>2537677902</number>
        <description>Generic Description</description>
       </part>
     <qty>1</qty>
    </row>
    <row>
     <key>2</key>
     <remark>(Generic Remark 8)</remark>
       <part>
        <number>25376457881</number>
        <description>Generic Description</description>
       </part>
     <qty>1</qty>
    </row>
    <row>
     <key>3</key>
     <remark>(Generic Remark 9)</remark>
       <part>
        <number>209288004</number>
        <description>Generic Description</description>
       </part>
     <qty>1</qty>
    </row>
   </rows>
 </listsection>
</Thislist>

地图文件示例

<?xml version="1.0" encoding="utf-8"?>
<mapfile xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="hotspot.xsd">
  <map name="SomeMapName">
    <area shape="rect" coords="169,210,199,252" key="3" />
    <area shape="rect" coords="2094,881,2124,924" key="1" />
    <area shape="rect" coords="2094,1031,2124,1074" key="2" />
    <area shape="rect" coords="2094,1145,2124,1187" key="6" />
  </map>
</mapfile>

Answer 1

我想通了，我需要

1. 选择 Thislist xml 文件中的每个部分节点
2. 获取 Thislist xml 文件中每个部分的映射文件值。
3. 将该部分的映射文件中的所有键值读取到一个列表中
4. 从 Thislist xml 文件中获取该部分的所有键值到一个列表中
5. 比较这两个列表，看看是否缺少任何列表

6. 如果有遗漏的请标记

                 // namespace
                   var nsmgr = new XmlNamespaceManager(xmlDoc.NameTable);
                   nsmgr.AddNamespace("a", "http://tempuri.org/XMLSchema.xsd");
                      //get every section in "Thislist" xml file.
                   XmlNodeList sections = xmlDoc.SelectNodes("//a:section", nsmgr);
                   foreach (XmlNode section in sections)
                   {
               //Get all the explodeddiagrams out for the section
                       XmlNodeList Views = section.SelectNodes("a:views/a:explodeddiagram", nsmgr);
   
   
                       foreach (XmlNode ExplodedDiagram in Views)
                       {
                           //get the mapfile attribute which gives us the explodeddiagram filename
                           string mapfile = ExplodedDiagram.Attributes["mapfile"].Value;
                           //load the mapfile as xmlDocmap
                           XmlDocument xmlDocmap = new XmlDocument();
                           xmlDocmap.Load(mapfile);
   
                           //go through everymap file in the section and get the key values.
                           XmlNodeList xmlmapkeylist = xmlDocmap.SelectNodes("//*[name()='area'][@key]");
                           foreach (XmlNode areakey in xmlmapkeylist)
                           {
                               string keyText = areakey.Attributes["key"].Value;
                               //add the key values from the mapfile into a list
                               listmapkeys.Add(keyText);
                           }
                       }
   
                     //get all the key values from the "Thislist" xml file.
                       XmlNodeList keys = section.SelectNodes("a:partslistsectionrows/a:partslistsectionrow/a:key", nsmgr);
                       foreach (XmlNode ListKey in keys)
                       {
   
                           //add the key values from the each section in "Thislist"xml into a list
                           listsectionkeys.Add(ListKey.InnerText);
                       }
                   }
   
                   foreach (string mapkey in listmapkeys)
                   {
                   //if the section doesn't contain a key value present in the mapfile. 
                       if(!listsectionkeys.Contains(mapkey))
                       {//output the differences or discrepencies this is going to listBox1 in this case
                           listBox1.Items.Add(hotspot + " not in partslist");
                       }
   
                   }
   
               }