迭代XML文档 [英] Iterate through an XML document
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问题描述
我有一个XML文档，想要迭代直到我找到一个特定元素并获取特定属性中的值。
XML是一个片段关注
I have an XML document and want to iterate through until I find a particular element and get a value in a particular attribute.
The XML is a snippet as follows
<?xml version="1.0" encoding="utf-8"?>
<Eib:Root xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="" modificationDate="2015-08-14T17:15:11.647" version="1702.02.00BUILD202_DISCO" remoteShutdownAllowed="true" ModelBuilderVersion="6.3" E39Compatible="false" xmlns:Eib="urn:peergroup-com:Eib">
<Eib:Log name="LogManager">
<Eib:DatedFileLog rolloverOnStartup="true" rolloverOnMidnight="true" rolloverOnSize="5000" rolloverAgeLimit="0" rolloverFileCountLimit="0" logFilePath="C:\Temp\Logs" loggingLevel="4" enabled="true" />
</Eib:Log>
<Eib:Units enabled="true">
<Eib:Unit name=" per min" symbol="/min" enabled="true" />
<Eib:Unit name="10x6deg" symbol="10^-6deg" enabled="true" />
<Eib:Unit name="10x_3deg" symbol="10^-3deg" enabled="true" />
<Eib:Unit name="bps" symbol="bps" enabled="true" />
<Eib:Unit name="chips" symbol="chips" enabled="true" />
<Eib:Unit name="kilobel" symbol="kB" enabled="true" />
<Eib:Unit name="lines" symbol="lines" enabled="true" />
<Eib:Unit name="mJ per cm2" symbol="mJ/cm2" enabled="true" />
<Eib:Unit name="nanometer per second (plane)" symbol="nm/sec" enabled="true" />
<Eib:Unit name="Pixel" symbol="Pixel" enabled="true" />
<Eib:Unit name="Times" symbol="Times" enabled="true" />
<Eib:Unit name="works" symbol="works" enabled="true" />
</Eib:Units>
<Eib:Clock name="Clock" clockSetMethod="useOffset" />
<Eib:ExceptionManager name="ExceptionManager" />
<EibModel:EquipmentElements>
<EibModel:Module name="GenericService" elementType="GenericService" function="GenericService" immutableID="GenericService" make="GenericService" model="GenericService" modelRevision="GenericService" supplier="GenericService" pollingInterval="0" processName="GenericService" processType="Process" recipeType="GenericService" enabled="true">
<EibModel:CustomAttributes enabled="true">
<EibModel:CustomAttribute name="ACCUM_UNIT_PROCESSED_RUNTIME_COUNTER" parameterType="Double" group="GenericService" value="0" classification="Configuration" accessLevel="0" persistValue="false" enabled="true" />
<EibModel:CustomAttribute name="TEMP_PATH" parameterType="StringData" group="GenericService" value="C:\Temp\DS-DISCO-DFD6361-017" classification="Configuration" accessLevel="0" persistValue="false" enabled="true" />
<EibModel:CustomAttribute name="THRESHOLD" parameterType="IntegerCount" group="GenericService" value="5" classification="Configuration" accessLevel="0" persistValue="false" enabled="true" />
</EibModel:CustomAttributes >
</EibModel:Module>
<EibModel:IODevice name="EquipmentConstantsContainer" uid="7eec9303-6f9f-4c10-ab78-8cd5435730ff" elementType="EquipmentConstantsContainer" function="EquipmentConstantsContainer" immutableID="EquipmentConstantsContainer" make="EquipmentConstantsContainer" model="EquipmentConstantsContainer" modelRevision="EquipmentConstantsContainer" supplier="EquipmentConstantsContainer" pollingInterval="0" enabled="true">
<EibModel:CustomAttributes enabled="true">
<EibModel:CustomAttribute name="AB_MODE" parameterType="StringData" group="EquipmentConstants" classification="Configuration" description="Min: NORMAL, Max: SPECIAL" accessLevel="0" persistValue="false" enabled="true" />
</EibModel:CustomAttributes>
</EibModel:IODevice>
</EibModel:EquipmentElements>
我想在一个元素中得到1个特定值，让我说我想要TEMP_PATH值
< b>我尝试了什么：
I want to get 1 particular value in an element lets say I want TEMP_PATH value
What I have tried:
if (!isFound)
{
if (currentNode.Name != "EibModel:CustomAttribute")
{
//check if node has children
if (currentNode.HasChildNodes)
{
XmlNodeList nodelist = currentNode.ChildNodes;
foreach (XmlNode node in nodelist)
{
checkNode(eibPath, node);
}
}
else //has no children
{
if (currentNode.NextSibling != null)
{
checkNode(eibPath, currentNode.NextSibling);
}
}
}
else if (currentNode.Name == "EibModel:CustomAttribute")
{
if (currentNode.OuterXml.Contains("EQP_NAME"))
{
eqpName = currentNode.Attributes.GetNamedItem("value").Value;
tempPath = string.Concat(tempPath + eqpName);
}
if (currentNode.OuterXml.Contains("TEMP_PATH"))
{
isFound = true;
if (txtResults.Text != string.Empty)
txtResults.AppendText(Environment.NewLine);
txtResults.AppendText("Attempting to Process File : " + eibPath + Environment.NewLine);
string val = currentNode.Attributes.GetNamedItem("value").Value;
//create directory before changing EIB file
log.Info("Attempting to create folder: " + tempPath);
// Determine whether the directory exists.
if (Directory.Exists(tempPath))
{
txtResults.SelectionColor = Color.OrangeRed;
txtResults.AppendText(tempPath + " already exists." + Environment.NewLine);
}
else
{
// Try to create the directory.
DirectoryInfo di = Directory.CreateDirectory(tempPath);
txtResults.SelectionColor = Color.Green;
txtResults.AppendText(tempPath + " created succesfully." + Environment.NewLine);
}
currentNode.Attributes.GetNamedItem("value").Value = val.Replace(val, tempPath);
txtResults.AppendText("Old TEMP_PATH= " + val + " New TEMP_PATH= " + tempPath + Environment.NewLine);
//return isFound;
}
}
else { };
}
return isFound;
}推荐答案
I would build a supporting model in code, load and parse the entire xml file, and then use LINQ on the model to find what I’m after.
I would build a supporting model in code, load and parse the entire xml file, and then use LINQ on the model to find what I'm after.
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