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Problem parsing through multiple elements in the XUnit XML file using XElement

I'm having trouble using XElement to parse multiple elements through an XUnit XML file and return the value.
Here is the XML File
<assemblies timestamp="07/31/2018 14:58:48">
<assembly name="C:\Users\bf\Documents\Visual Studio 2015\Projects\xUnitDemo\xUnitDemo\bin\Debug\xUnitDemo.DLL" environment="64-bit .NET 4.0.30319.42000 [collection-per-class, parallel (1 threads)]" test-framework="xUnit.net 2.3.1.3858" run-date="2018-07-31" run-time="14:58:47" config-file="C:\Users\bf\Documents\Visual Studio 2015\Projects\xUnitDemo\packages\xunit.runner.console.2.4.0\tools\net452\xunit.console.exe.Config" total="15" passed="14" failed="1" skipped="0" time="0.257" errors="0">
<errors />
<collection total="2" passed="1" failed="1" skipped="0" name="Test collection for xUnitDemo.SimpleTests" time="0.070">
<test name="xUnitDemo.SimpleTests.PassingTest" type="xUnitDemo.SimpleTests" method="PassingTest" time="0.0636741" result="Pass">
<traits>
<trait name="test" value="test" />
<trait name="requirement" value="test" />
<trait name="labels" value="test" />
</traits>
</test>
<test name="xUnitDemo.SimpleTests.FailingTest" type="xUnitDemo.SimpleTests" method="FailingTest" time="0.0059474" result="Fail">
<failure exception-type="Xunit.Sdk.EqualException">
<message><![CDATA[Assert.Equal() Failure\r\nExpected: 5\r\nActual: 4]]></message>
<stack-trace><![CDATA[ at xUnitDemo.SimpleTests.FailingTest() in C:\Users\smsf\documents\visual studio 2015\Projects\xUnitDemo\xUnitDemo\SimpleTests.cs:line 30]]></stack-trace>
</failure>
</test>
</collection>
</assembly>
</assemblies>
I'm able to parse through test element using this code.
private static List<TestResults> GetTestAutomationExecutionResult(string filePath)
{
List<TestResults> testResults = new List<TestResults>();
XElement xelement = XElement.Load(filePath);
IEnumerable<XElement> results = xelement.Elements().Where(e => e.Name.LocalName == "test");
foreach (var result in results)
{
if (result.Attribute("result").Value == "Fail")
{
testResults.Add(new TestResults(result.Attribute("result").Value, "this is where the failure message would go"));
}
else
{
testResults.Add(new TestResults(result.Attribute("result").Value, ""));
}
}
But I'm having a hard time trying to find and add message inside of failure element in the foreach.
result.Attribute("message").Value

Your code has a couple problems:
The <result> elements are not direct children of the root element, so xelement.Elements().Where(e => e.Name.LocalName == "test") does not select anything. You need to descend deeper into the hierarchy, e.g. with Descendants().
The message text is contained in an indirect child element of the <test> node, specifically failure/message. You need to select this element to get the message.
result.Attribute("message").Value will not work because the XElement.Attribute(XName) method selects an XML attribute rather than an element.
See: XML attribute vs XML element.
Putting those two points together, your code should look like:
private static List<TestResults> GetTestAutomationExecutionResult(string filePath)
=> GetTestAutomationExecutionResult(XElement.Load(filePath));
private static List<TestResults> GetTestAutomationExecutionResult(XElement xelement)
{
var query = from e in xelement.Descendants()
where e.Name.LocalName == "test"
let r = e.Attribute("result").Value
let m = r == "Fail" ? e.Elements("failure").Elements("message").FirstOrDefault()?.Value : ""
select new TestResults(r, m);
return query.ToList();
}
Demo fiddle here.

LINQ to XML how compare children with repeater items

I've got a print button that gives XML data to filling an adobe lifecycle template. I'm trying to compare ROWID in XML with a repeater rowid to make it print the information about the row the button was clicked on.
Int32 rownum = Convert.ToInt32(e.CommandArgument.ToString());
string xmlROWID = Xmld.Descendants("ROWID").First().Value;
Here are 2 of the children in the XML:
<VKRSADL>
<CUSTOMER_SADLS>
<TABLEVALUE>
<ROW>
<ROWID>0</ROWID>
<ID>Съкредитополучател</ID>
<TYPE>48</TYPE>
<TYPEID>1</TYPEID>
<TYPECODE>1</TYPECODE>
<CRSCODE>777</CRSCODE>
<EGN />
<NAME />
<XML>
<SADL0>
<OwnerCrsCode />
<TABLEVALUE />
</SADL0>
</XML>
<XMLCHECK />
</ROW>
<ROW>
<ROWID>1</ROWID>
<ID>Съкредитополучател</ID>
<TYPE>48</TYPE>
<TYPEID>2</TYPEID>
<TYPECODE>1</TYPECODE>
<CRSCODE>123123</CRSCODE>
<EGN />
<NAME />
<XML>
<SADL1>
<OwnerCrsCode />
<TABLEVALUE />
</SADL1>
</XML>
<XMLCHECK />
</ROW>
</TABLEVALUE>
</CUSTOMER_SADLS>
</VKRSADL>
Comparing it to the First() gives me only the first ROWID, and there can be multiple. How can I compare the repeater rowid it to each of the ROWID's I've got saved?
I've tried this:
foreach (var child in Xmld.Root.Element("REQUEST").Element("VKRSADL").Element("CUSTOMER_SADLS").Element("TABLEVALUE").Elements("ROW").Elements()) {
//DO SOMETHING
}
but I get an error:
An exception of type 'System.NullReferenceException' occurred in App_Web_f2rvuyke.dll but was not handled in user code
Additional information: Object reference not set to an instance of an object.

As I understand from your question, you want to iterate through ROW element to get all elements which their ROWID is equal to a certain value.
You can use below code to get all ROW elements, then you can do what ever you want with each ROW, in my example below I print ROWID to console window:
string xml = "<VKRSADL><CUSTOMER_SADLS><TABLEVALUE><ROW><ROWID>0</ROWID><ID>Съкредитополучател</ID><TYPE>48</TYPE><TYPEID>1</TYPEID><TYPECODE>1</TYPECODE><CRSCODE>777</CRSCODE><EGN /><NAME /><XML><SADL0><OwnerCrsCode /><TABLEVALUE /></SADL0></XML><XMLCHECK /></ROW><ROW><ROWID>1</ROWID><ID>Съкредитополучател</ID><TYPE>48</TYPE><TYPEID>2</TYPEID><TYPECODE>1</TYPECODE><CRSCODE>123123</CRSCODE><EGN /><NAME /><XML><SADL1><OwnerCrsCode /><TABLEVALUE /></SADL1></XML><XMLCHECK /></ROW></TABLEVALUE></CUSTOMER_SADLS></VKRSADL>";
XDocument xDoc = XDocument.Parse(xml);
foreach (var child in xDoc.Element("VKRSADL").Element("CUSTOMER_SADLS").Element("TABLEVALUE").Elements().Where(e => e.Name == "ROW"))
{
Console.WriteLine(child.Element("ROWID").Value);
}
Note: Above example assume that the XML schema will not be changed, and if it changed then an exception could be occurred.

Try following :
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.Xml.Linq;
namespace ConsoleApplication1
{
class Program
{
const string FILENAME = #"c:\temp\test.xml";
static void Main(string[] args)
{
XDocument doc = XDocument.Load(FILENAME);
var results = doc.Descendants("ROW").Select(x => new {
rowID = (int)x.Element("ROWID"),
id = (string)x.Element("ID"),
type = (int)x.Element("TYPE"),
typeID = (int)x.Element("TYPEID"),
typeCode = (int)x.Element("TYPECODE"),
crsCode = (int)x.Element("CRSCODE"),
}).ToList();
}
}
}

Detecting structural differences in XML using Linq and XElement

I'm trying to audit some XML that is used in a bespoke piece of software. Im able to detect changes in identical structures using 'XNode.DeepEquals' and then adding an extra attribute to the elements that have changed so I can highlight them.
My problem is that, when the structure does change this methodology fails. ( I'm enumerating over both XElements at the same time performing a DeepEquals, if they are not equal - recursively calling the same method to filter out where the exact changes occurr )
Obviously this now falls apart when I'm enumerating and the nodes being compared are not the same. See Below Sample:
Before
<?xml version="1.0" encoding="utf-16"?>
<Prices xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<Price default="true">
<Expression operator="Addition">
<LeftOperand>
<AttributeValue field="ccx_bandwidth" />
</LeftOperand>
<RightOperand>
<Constant value="10" type="Integer" />
</RightOperand>
</Expression>
</Price>
<Price default="false">
<Expression operator="Addition">
<LeftOperand>
<AttributeValue field="ccx_bandwidth" />
</LeftOperand>
<RightOperand>
<Constant value="99" type="Integer" />
</RightOperand>
</Expression>
</Price>
<RollupChildren />
After
<?xml version="1.0" encoding="utf-16"?>
<Prices xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<Price default="true">
<Expression operator="Addition">
<LeftOperand>
<AttributeValue field="ccx_bandwidth" />
</LeftOperand>
<RightOperand>
<Constant value="10" type="Integer" />
</RightOperand>
</Expression>
</Price>
<RollupChildren />
So you can see that the latter Price Node has been removed and I need to show this change.
At the moment I have access to both pieces of xml and modify them on load of the audit application with an 'auditchanged' attribute which in my silverlight app i bind the background too with a converter.
I'd been playing around with Linq to Xml and looking at joining the two XElements in a query but wasn't sure how to proceed.
Ideally what I would like to do is merge the two XElements together but add a seperate attribute depending on if it's added or removed which i can then bind to with a converter to say highlight in red or green appropriately.
Does anyone have any bright ideas on this one? ( I'd been looking at XmlDiff however I can't use that in Silverlight, I don't think? )

I have a generic differ class in the codeblocks library http://codeblocks.codeplex.com
Loading your XML documents and treating each document as an IEnumerable (flattened XML tree) should allow you to use the differ as shown here: http://codeblocks.codeplex.com/wikipage?title=Differ%20Sample&referringTitle=Home
Here's the source code for differ.cs: http://codeblocks.codeplex.com/SourceControl/changeset/view/96119#1887406
Diff prototype is:
static IEnumerable<DiffEntry> Diff(IEnumerable<T> oldData, IEnumerable<T> newData, Comparison<T> identity, Comparison<T> different)

The important part here is the descendants query. It turns every element in the first doc in a list of its ancestors, where every item contains the name of the element and it's index among its siblings of the same name. I think this can be somehow used for joining, though I have no idea how to do full outer join with linq. So instead i just use these lists to find elements in the second document, and then depending on the result, probably mark it as either deleted or changed.
var doc = XDocument.Load(in_A);
var doc2 = XDocument.Load(in_B);
var descendants = doc.Descendants().Select(d =>
d.AncestorsAndSelf().Reverse().Select(el =>
new {idx = el.ElementsBeforeSelf(el.Name).Count(), el, name = el.Name}).ToList());
foreach (var list in descendants) {
XContainer el2 = doc2;
var el = list.Last().el;
foreach (var item in list) {
if (el2 == null) break;
el2 = el2.Elements(item.name).Skip(item.idx).FirstOrDefault();
}
string changed = "";
if (el2 == null) changed += " deleted";
else {
var el2e = el2 as XElement;
if (el2e.Attributes().Select(a => new { a.Name, a.Value })
.Except(el.Attributes().Select(a => new { a.Name, a.Value })).Count() > 0) {
changed += " attributes";
}
if (!el2e.HasElements && el2e.Value != el.Value) {
changed += " value";
}
el2e.SetAttributeValue("found", "found");
}
if (changed != "") el.SetAttributeValue("changed", changed.Trim());
}
doc.Save(out_A);
doc2.Save(out_B);

Get InnerText from Collection

Is there a way to get the innertext of a node when the node is inside a collection
Currently i have this
Collection<string> DependentNodes = new Collection<string>();
foreach (XmlNode node in nodes)
{
for (int i = 0; i < node.ChildNodes.Count; i++)
{
DependentNodes.Add(node.ChildNodes[i].InnerXml);
//the reason i'm using InnerXml is that it will return all the child node of testfixture in one single line,then we can find the category & check if there's dependson
}
}
string selectedtestcase = "abc_somewords";
foreach (string s in DependentNodes)
{
if(s.Contains(selectedtestcase))
{
MessageBox.Show("aaa");
}
}
When i debug string s or the index has this inside of it[in a single line]
<testfixture name="1" description="a">
<categories>
<category>abc_somewords</category>
</categories>
<test name="a" description="a">
<dependencies>
<dependson typename="dependsonthis" />
</dependencies>
</test>
</testfixture>
What i'm trying to do is when we reach "testfixture 1" it will find "abc_somewords" & search the "dependson typename"node(if any) and get the "typename"(which is "dependonthis").

Could you use linq to xml. Something like the below might be a decent start
xml.Elements("categories").Where(x => x.Element("category").Value.Contains(selectedtestcase));
This is off the top of my head so might will need refining
P.S. Use XElement.Load or XElement.Parse to get your xml into XElements

Since you already working with XmlNode you could use a XPath expression to select the desired textfixture node, and select the dependency value:
XmlDocument doc = // ...
XmlNode node = doc.SelectSingleNode("//testfixture[contains(categories/category, \"abc\")]/test/dependencies/dependson/");
if (node != null)
{
MessageBox.Show(node.Attributes["typename"]);
}
This selects the dependson node which belongs to a testfixture node with a category containing "abc". node.Attributes["typename"] will return the value of the typename attribute.
Edited:
Updated XPath expression to the more specific question information

Assumptions
As you are looping in your code and wanting to create a collection I'm assuming the actual Xml File has several testfixture nodes inside such as the below assumed example:
<root>
<testfixture name="1" description="a">
<categories>
<category>abc_somewords</category>
</categories>
<test name="a" description="a">
<dependencies>
<dependson typename="dependsonthis" />
</dependencies>
</test>
</testfixture>
<testfixture name="2" description="a">
<categories>
<category>another_value</category>
</categories>
<test name="b" description="a">
<dependencies>
<dependson typename="secondentry" />
</dependencies>
</test>
</testfixture>
<testfixture name="3" description="a">
<categories>
<category>abc_somewords</category>
</categories>
<test name="c" description="a">
<dependencies>
<dependson typename="thirdentry" />
</dependencies>
</test>
</testfixture>
</root>
The Code using Linq to Xml
To use Linq you must reference the following name spaces:
using System.Linq;
using System.Xml.Linq;
Using Linq To Xml on the above assumed xml file structure would look like this:
// To Load Xml Content from File.
XDocument doc1 = XDocument.Load(#"C:\MyXml.xml");
Collection<string> DependentNodes = new Collection<string>();
var results =
doc1.Root.Elements("testfixture")
.Where(x => x.Element("categories").Element("category").Value.Contains("abc_somewords"))
.Elements("test").Elements("dependencies").Elements("dependson").Attributes("typename").ToArray();
foreach (XAttribute attribute in results)
{
DependentNodes.Add(attribute.Value.Trim());
}
Result
The resulting Collection will contain the following:
As you can see, only the text of the typename attribute has been extracted where the dependson nodes where in a testfixture node which contained a category node with the value of abc_somewords.
Additional Notes
If you read the xml from a string you can also use this:
// To Load Xml Content from a string.
XDocument doc = XDocument.Parse(myXml);
If your complete Xml structure is different, feel free to post it and I change the code to match.
Have Fun.

I don't know what is "nodes" you are using.
Here is code with your requirement(What I understood).
Collection<XmlNode> DependentNodes = new Collection<XmlNode>();
XmlDocument xDoc = new XmlDocument();
xDoc.Load(#"Path_Of_Your_xml");
foreach (XmlNode node in xDoc.SelectNodes("testfixture")) // Here I am accessing only root node. Give Xpath if ur requrement is changed
{
for (int i = 0; i < node.ChildNodes.Count; i++)
{
DependentNodes.Add(node.ChildNodes[i]);
}
}
string selectedtestcase = "abc_somewords";
foreach (var s in DependentNodes)
{
if (s.InnerText.Contains(selectedtestcase))
{
Console.Write("aaa");
}
}

using System;
using System.Xml;
namespace ConsoleApplication6
{
class Program
{
private const string XML = "<testfixture name=\"1\" description=\"a\">" +
"<categories>" +
"<category>abc_somewords</category>" +
"</categories>" +
"<test name=\"a\" description=\"a\">" +
"<dependencies>" +
"<dependson typename=\"dependsonthis\" />" +
"</dependencies>" +
"</test>" +
"</testfixture>";
static void Main(string[] args)
{
var document = new XmlDocument();
document.LoadXml(XML);
var testfixture = document.SelectSingleNode("//testfixture[#name = 1]");
var category = testfixture.SelectSingleNode(".//category[contains(text(), 'abc_somewords')]");
if(category != null)
{
var depends = testfixture.SelectSingleNode("//dependson");
Console.Out.WriteLine(depends.Attributes["typename"].Value);
}
Console.ReadKey();
}
}
}
Output: dependsonthis

Query an XDocument for elements by name at any depth

I have an XDocument object. I want to query for elements with a particular name at any depth using LINQ.
When I use Descendants("element_name"), I only get elements that are direct children of the current level. I'm looking for the equivalent of "//element_name" in XPath...should I just use XPath, or is there a way to do it using LINQ methods?

Descendants should work absolutely fine. Here's an example:
using System;
using System.Xml.Linq;
class Test
{
static void Main()
{
string xml = #"
<root>
<child id='1'/>
<child id='2'>
<grandchild id='3' />
<grandchild id='4' />
</child>
</root>";
XDocument doc = XDocument.Parse(xml);
foreach (XElement element in doc.Descendants("grandchild"))
{
Console.WriteLine(element);
}
}
}
Results:
<grandchild id="3" />
<grandchild id="4" />

An example indicating the namespace:
String TheDocumentContent =
#"
<TheNamespace:root xmlns:TheNamespace = 'http://www.w3.org/2001/XMLSchema' >
<TheNamespace:GrandParent>
<TheNamespace:Parent>
<TheNamespace:Child theName = 'Fred' />
<TheNamespace:Child theName = 'Gabi' />
<TheNamespace:Child theName = 'George'/>
<TheNamespace:Child theName = 'Grace' />
<TheNamespace:Child theName = 'Sam' />
</TheNamespace:Parent>
</TheNamespace:GrandParent>
</TheNamespace:root>
";
XDocument TheDocument = XDocument.Parse( TheDocumentContent );
//Example 1:
var TheElements1 =
from
AnyElement
in
TheDocument.Descendants( "{http://www.w3.org/2001/XMLSchema}Child" )
select
AnyElement;
ResultsTxt.AppendText( TheElements1.Count().ToString() );
//Example 2:
var TheElements2 =
from
AnyElement
in
TheDocument.Descendants( "{http://www.w3.org/2001/XMLSchema}Child" )
where
AnyElement.Attribute( "theName" ).Value.StartsWith( "G" )
select
AnyElement;
foreach ( XElement CurrentElement in TheElements2 )
{
ResultsTxt.AppendText( "\r\n" + CurrentElement.Attribute( "theName" ).Value );
}

You can do it this way:
xml.Descendants().Where(p => p.Name.LocalName == "Name of the node to find")
where xml is a XDocument.
Be aware that the property Name returns an object that has a LocalName and a Namespace. That's why you have to use Name.LocalName if you want to compare by name.

Descendants will do exactly what you need, but be sure that you have included a namespace name together with element's name. If you omit it, you will probably get an empty list.

There are two ways to accomplish this,
LINQ to XML
XPath
The following are samples of using these approaches,
List<XElement> result = doc.Root.Element("emails").Elements("emailAddress").ToList();
If you use XPath, you need to do some manipulation with the IEnumerable:
IEnumerable<XElement> mails = ((IEnumerable)doc.XPathEvaluate("/emails/emailAddress")).Cast<XElement>();
Note that
var res = doc.XPathEvaluate("/emails/emailAddress");
results either a null pointer, or no results.

I am using XPathSelectElements extension method which works in the same way to XmlDocument.SelectNodes method:
using System;
using System.Xml.Linq;
using System.Xml.XPath; // for XPathSelectElements
namespace testconsoleApp
{
class Program
{
static void Main(string[] args)
{
XDocument xdoc = XDocument.Parse(
#"<root>
<child>
<name>john</name>
</child>
<child>
<name>fred</name>
</child>
<child>
<name>mark</name>
</child>
</root>");
foreach (var childElem in xdoc.XPathSelectElements("//child"))
{
string childName = childElem.Element("name").Value;
Console.WriteLine(childName);
}
}
}
}

Following #Francisco Goldenstein answer, I wrote an extension method
using System.Collections.Generic;
using System.Linq;
using System.Xml.Linq;
namespace Mediatel.Framework
{
public static class XDocumentHelper
{
public static IEnumerable<XElement> DescendantElements(this XDocument xDocument, string nodeName)
{
return xDocument.Descendants().Where(p => p.Name.LocalName == nodeName);
}
}
}

This my variant of the solution based on LINQ and the Descendants method of the XDocument class
using System;
using System.Linq;
using System.Xml.Linq;
class Test
{
static void Main()
{
XDocument xml = XDocument.Parse(#"
<root>
<child id='1'/>
<child id='2'>
<subChild id='3'>
<extChild id='5' />
<extChild id='6' />
</subChild>
<subChild id='4'>
<extChild id='7' />
</subChild>
</child>
</root>");
xml.Descendants().Where(p => p.Name.LocalName == "extChild")
.ToList()
.ForEach(e => Console.WriteLine(e));
Console.ReadLine();
}
}
Results:
For more details on the Desendants method take a look here.

We know the above is true. Jon is never wrong; real life wishes can go a little further.
<ota:OTA_AirAvailRQ
xmlns:ota="http://www.opentravel.org/OTA/2003/05" EchoToken="740" Target=" Test" TimeStamp="2012-07-19T14:42:55.198Z" Version="1.1">
<ota:OriginDestinationInformation>
<ota:DepartureDateTime>2012-07-20T00:00:00Z</ota:DepartureDateTime>
</ota:OriginDestinationInformation>
</ota:OTA_AirAvailRQ>
For example, usually the problem is, how can we get EchoToken in the above XML document? Or how to blur the element with the name attribute.
You can find them by accessing with the namespace and the name like below
doc.Descendants().Where(p => p.Name.LocalName == "OTA_AirAvailRQ").Attributes("EchoToken").FirstOrDefault().Value
You can find it by the attribute content value, like this one.

(Code and Instructions is for C# and may need to be slightly altered for other languages)
This example works perfect if you want to read from a Parent Node that has many children, for example look at the following XML;
<?xml version="1.0" encoding="UTF-8"?>
<emails>
<emailAddress>jdoe#set.ca</emailAddress>
<emailAddress>jsmith#hit.ca</emailAddress>
<emailAddress>rgreen#set_ig.ca</emailAddress>
</emails>
Now with this code below (keeping in mind that the XML File is stored in resources (See the links at end of snippet for help on resources) You can obtain each email address within the "emails" tag.
XDocument doc = XDocument.Parse(Properties.Resources.EmailAddresses);
var emailAddresses = (from emails in doc.Descendants("emailAddress")
select emails.Value);
foreach (var email in emailAddresses)
{
//Comment out if using WPF or Windows Form project
Console.WriteLine(email.ToString());
//Remove comment if using WPF or Windows Form project
//MessageBox.Show(email.ToString());
}
Results
jdoe#set.ca
jsmith#hit.ca
rgreen#set_ig.ca
Note: For Console Application and WPF or Windows Forms you must add the "using System.Xml.Linq;" Using directive at the top of your project, for Console you will also need to add a reference to this namespace before adding the Using directive. Also for Console there will be no Resource file by default under the "Properties folder" so you have to manually add the Resource file. The MSDN articles below, explain this in detail.
Adding and Editing Resources
How to: Add or Remove Resources