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Can not read values/nodes from xml using c#

I'm trying to read values from following xml (which is previously fetched from FTP):
<?xml version="1.0" encoding="utf-8"?>
<eventdata xmlns="http://www.demoweb.net/xml/eventdata" >
<site>
<sitelink>demotesting</sitelink>
<user>15101991</user>
<measurement>
<nodelink>012019120312064500</nodelink>
<containername>A1</containername>
<time>2020-04-30T11:25:35</time>
<value type="n_v_unitvalue">0.04</value>
<value type="n_v_unitvalue_diff">0.040</value>
</measurement>
<measurement>
<nodelink>012019120312064501</nodelink>
<containername>A2</containername>
<time>2020-04-30T11:25:35</time>
<value type="n_v_unitvalue">0.0</value>
<value type="n_v_unitvalue_diff">-0.001</value>
</measurement>
<measurement>
<nodelink>012019120312064502</nodelink>
<containername>A3</containername>
<time>2020-04-30T11:25:34</time>
<value type="n_v_unitvalue">0.0</value>
<value type="n_v_unitvalue_diff">0.000</value>
</measurement>
</site>
<createdate>2020-04-30T11:25:35</createdate>
</eventdata>
Before I start, file is sucessfully loaded into memory :)
As you can see root node is eventdata, and site is the node where all data is contained.
So basically I need to loop all measurement nodes and get the data.
I also were struggling to get out user node.. here's what I've tried so far:
using (StreamReader xml_reader = new StreamReader(xml_response.GetResponseStream()))
{
string xml = xml_reader.ReadToEnd();
XmlDocument xmldoc = new XmlDocument();
xmldoc.LoadXml(xml);
XmlNodeList mainFileContent = xmldoc.SelectNodes("eventdata");
// XmlNodeList mainFileContent = xmldoc.SelectNodes("eventdata/site");
XmlElement root = xmldoc.DocumentElement;
if (mainFileContent != null)
{
foreach (XmlNode node in mainFileContent)
{
var user = node["user"].InnerText;
}
}
}
What I'm missing?
THANKS GUYS
CHEERS

Your eventdata node has own xmlns declaration, you should properly handle it using XmlNamespaceManager and select the nodes with x:eventdata/x:site XPath expression
var xmldoc = new XmlDocument();
xmldoc.LoadXml(xml);
var nsmgr = new XmlNamespaceManager(xmldoc.NameTable);
nsmgr.AddNamespace("x", xmldoc.DocumentElement.NamespaceURI);
var mainFileContent = xmldoc.SelectNodes("x:eventdata/x:site", nsmgr);
foreach (XmlNode node in mainFileContent)
{
var user = node["user"]?.InnerText;
}

Use below code to read measurement
using (StreamReader xml_reader = new StreamReader(xml_response.GetResponseStream()))
{
string xml = xml_reader.ReadToEnd();
XmlDocument xmldoc = new XmlDocument();
xmldoc.LoadXml(xml);
var nsmgr = new XmlNamespaceManager(xmldoc.NameTable);
nsmgr.AddNamespace("ns", "http://www.demoweb.net/xml/eventdata");
XmlNodeList mainFileContent = xmldoc.SelectNodes("ns:eventdata/ns:site",nsmgr);
XmlElement root = xmldoc.DocumentElement;
if (mainFileContent != null)
{
foreach (XmlNode site in mainFileContent)
{
var user = site["user"].InnerText;
XmlNodeList measurements = site.SelectNodes("ns:measurement", nsmgr);
if (measurements != null)
{
foreach (XmlNode measurement in measurements)
{
var containername = measurement["containername"].InnerText;
var time = measurement["time"].InnerText;
XmlNodeList values = measurement.SelectNodes("ns:value", nsmgr);
if (values != null)
{
foreach (XmlNode value in values)
{
var type = value.Attributes["type"].Value;
var v2 = value.InnerText;
}
}
}
}
}
}
}

How to get attribute xml without loop c#

i have xml file like this
> <?xml version='1.0' ?>
<config>
<app>
<app version="1.1.0" />
> </app>
</config>
and i want to read attribute version from node app
without any loop like this
while(reader.read()) or foreach etc.
Thanks

XmlDocument document = new XmlDocument();
document.Load("D:/source.xml");
XmlNode appVersion1 = document.SelectSingleNode("//app[#version]/#version");
XmlNode appVersion2 = document["config"]["app"]["app"].Attributes["version"];
Console.WriteLine("{0}, {1}",
appVersion1.Value,
appVersion2.Value);

You can do it this way.
XmlDocument doc = new XmlDocument();
string str = "<config><app><app version=" + "\"1.1.0\"" + "/></app></config>";
doc.LoadXml(str);
var nodes = doc.GetElementsByTagName("app");
foreach (XmlNode node in nodes)
{
if (node.Attributes["version"] != null)
{
string version = node.Attributes["version"].Value;
}
}
And you need to this for loop cause you got two nodes with same name App.
If you have a single node with name App,
XmlDocument doc = new XmlDocument();
string str = "<config><app version=" + "\"1.1.0\"" + "/></config>";
doc.LoadXml(str);
var node = doc.SelectSingleNode("//app");
if (node.Attributes["version"] != null)
{
string version = node.Attributes["version"].Value;
Console.WriteLine(version);
}

You can use linq to do
string stringXml= "yourXml Here";
XElement xdoc = XElement.Parse(stringXml);
var result= xdoc.Descendants("app").FirstOrDefault(x=> x.Attribute("version") != null).attribute("version").Value;
or:
var result = xdoc.Descendants("app").Where(x => x.Attribute("version") != null)
.Select(x => new { Version = x.Value });

how to get the value from innerXMl correctly

I plan to retrieve each suggestion in array and then stroe it in to the list. I have trouble retrieve the option node data, in this pattern {aeroplane,aeroplanes, aerobian} {i}, Any kind soul can help me out with it.
XmlDocument findStringDoc = new XmlDocument();
findStringDoc.Load (Application.dataPath+ "/" + filename);
XmlNodeList nodeList = findStringDoc.SelectNodes("/results/error");
//XmlNodeList suggestionNodeList = findStringDoc.SelectNodes("/results/error/suggestions/option");
foreach(XmlNode xn in nodeList){
errorString.Add(xn["string"].InnerText);
errorType.Add(xn["type"].InnerText);
//string temp = xn["suggestion"].InnerXml;
////TODO: Retrieve suggestions here!
XmlNodeList suggestionNodeList = findStringDoc.SelectNodes("/suggestions");
foreach(XmlNode yn in suggestionNodeList){
option[suggestionNodeList.Count] = yn["option"].InnerText;
Debug.Log(yn["option"].InnerText);
}
suggestionResult.Add (option);
//Debug.Log(suggestionResult);
//XmlNodeList suggestionNodeList = findStringDoc.SelectNodes("/results/error[string='{0}']/suggestions/option",errorString[i]);
}
<results>
<error>
<string>aeroplan</string>
<description>Spelling</description>
<precontext>a</precontext>
<suggestions>
<option>aeroplane</option>
<option>aeroplanes</option>
<option>aerobian</option>
</suggestions>
<type>spelling</type>
</error>
<error>
<string>i</string>
<description>Make I uppercase</description>
<precontext></precontext>
<suggestions>
<option>I</option>
</suggestions>
<type>grammar</type>
<url>http://service.afterthedeadline.com/info.slp?text=i&tags=PRP&engine=1</url>
</error>
</results>

You can use my code below:
private static void GetSuggestionOption(string filename, string value, string optionSuggest)
{
XDocument xDoc = XDocument.Parse(filename);
var parentNode = xDoc.Descendants().Where(x => x.Value == value).Ancestors().FirstOrDefault();
var childNode = parentNode.Descendants().Where(x => x.Name == optionSuggest);
childNode.ToList().ForEach(x => Console.WriteLine(x.Value));
}
Calling: GetSuggestionOption(fileName, "aeroplan", "option");
Happy Coding!

You can use XmlDocument.SelectNodes() method passing suitable XPath string parameter to select specific element(s) from XmlDocument, for example :
public void GetSuggestionOption(string keyword)
{
XmlDocument doc = new XmlDocument();
doc.Load (Application.dataPath+ "/" + filename);
string xpath = string.Format("//error[string='{0}']/suggestions/option", keyword);
XmlNodeList optionSuggestionList = doc.SelectNodes(xpath);
foreach (XmlNode option in optionSuggestionList)
{
Debug.Log(option.InnerXml);
}
}
You can call the method this way for example : GetSuggestionOption("aeroplan")

Querying XML document

I am trying to query an xml document, but this code doesn't read xml parts with closed tag notation but reads fine xelement. Can anyone spot what I'm doing wrong?
I have program generated XML document which gives closed tagged file hence its an issue now..
<?xml version="1.0" encoding="utf-8" ?>
<Student>
<Person name="John" city="Auckland" country="NZ" />
<Person>
<Course>GDICT-CN</Course>
<Level>7</Level>
<Credit>120</Credit>
<Date>129971035565221298</Date>
</Person>
<Person>
<Course>GDICT-CN</Course>
<Level>7</Level>
<Credit>120</Credit>
<Date>129971036040828501</Date>
</Person>
</Student>
class Program
{
static void Main(string[] args)
{
XDocument xDoc = XDocument.Load(AppDomain.CurrentDomain.BaseDirectory + "Customers.xml");
IEnumerable<XElement> rows = from row in xDoc.Descendants("Person") select row;
foreach(XElement xEle in rows)
{
IEnumerable<XAttribute>attlist = from att in xEle.DescendantsAndSelf().Attributes() select att;
foreach(XAttribute xatt in attlist)
{
Console.WriteLine(xatt);
}
Console.WriteLine("-------------------------------------------");
}
Console.ReadLine();
}
}

Since you have added Course and other attributes as XElement, so you need to loop on XElements instead of attributes -
foreach (XElement xEle in rows)
{
IEnumerable<XAttribute> attlist = from att in xEle.DescendantsAndSelf()
.Attributes() select att;
foreach (XAttribute xatt in attlist)
{
Console.WriteLine(xatt);
}
foreach (XElement elemnt in xEle.Descendants())
{
Console.WriteLine(elemnt.Value);
}
Console.WriteLine("-------------------------------------------");
}

First you must navigate to Person level and iterate through Persons, then for each Person you can iterate through its attributes.
private static void Main(string[] args)
{
//string path = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
//XDocument xDoc = XDocument.Load(path + "\\Student Data\\data.xml");
XDocument xDoc = XDocument.Load(AppDomain.CurrentDomain.BaseDirectory + "Customers.xml");
IEnumerable<XElement> xElements = xDoc.Descendants("Person");
foreach (XElement element in xElements)
{
foreach (XAttribute attribute in element.Attributes())
{
Console.WriteLine(attribute);
}
Console.WriteLine("-------------------------------------------");
}
Console.ReadLine();
}

Get innertext from XML tags?

I am trying to populate an array with the inner text or value of a XML tag. I can loop though the nodes of the tag i am just having an issue pulling out the stored value.
I am looping though the child nodes of the Properties Tag, XML at bottom of Question.
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load("C://Users//Shaun//Documents//Visual Studio 2010//Projects//LightStoneTestService//LightStoneTestService//FileTest//Testdo.xml");
//XmlNodeList dataNodes = xmlDoc.SelectNodes("//Properties");
XmlNodeList oXMlNodeList = xmlDoc.GetElementsByTagName("Properties");
for (int Count = 0; Count < 27; Count++)
{
foreach (XmlNode node in oXMlNodeList)
{
int Max = node.ChildNodes.Count;
foreach (XmlNode childNode in node.ChildNodes) //For each child node in FieldData
{
if (ArrayProperties[Count].LightStoneTag == childNode.Name)
{
ArrayProperties[Count].Value = node.SelectSingleNode(ArrayProperties[Count].LightStoneTag).InnerText;
}
}
}
}
***** My Xml file looks as follows:
<NewDataSet>
<RequestData xmlns="RequestData">
<Req_ID>3204eba5-07f4-4e83-8b46-d89fa1d70bf6</Req_ID>
</RequestData>
<Properties xmlns="Properties">
<sr_id>19374324</sr_id>
<prop_id>9841107</prop_id>
<DEED_ID>21</DEED_ID>
<PROPTYPE_ID>2</PROPTYPE_ID>
<SS_ID>2315</SS_ID>
<NAD_ID>3048001</NAD_ID>
<property_type>SS</property_type>
<PROVINCE>GA</PROVINCE>
<MUNICNAME>CITY OF JOHANNESBURG</MUNICNAME>
<DEEDTOWN>ALLENS NEK</DEEDTOWN>
<SECTIONAL_TITLE>SS GREENHILLS</SECTIONAL_TITLE>
<UNIT>15</UNIT>
<TownShip>ALLENS NEK</TownShip>
<Purchase_Price>236500</Purchase_Price>
<Purchase_Date>20031020</Purchase_Date>
<Bond_Number>SB37369/2006</Bond_Number>
<Township_alt>ALLEN'S NEK EXT 32</Township_alt>
<RE>false</RE>
</Properties>
</NewDataSet>

It's the namespace issue. Add this portion of code before the for loop:
NameTable nt = new NameTable();
nt.Add("Properties");
XmlNamespaceManager nsmgr = new XmlNamespaceManager(nt);
nsmgr.AddNamespace("ns1", "Properties");
Change the line where you retrieve InnerText to:
ArrayProperties[Count].Value = node
.SelectSingleNode(
String.Concat("//ns1:", ArrayProperties[Count].LightStoneTag),
nsmgr)
.InnerText;