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Finding and replacing values of a tag in XML with c sharp

<TestCase Name="DEBUG">
<ActionEnvironment Name="Carved records indication">
<Define Name="_TestedVersionPath" Value="{CustomParam {paramName=PA tested version installer folder path}, {appName=PA installer}, {hint=\\ptnas1\builds\Temp Builds\Forensic\Physical Analyzer\PA.Test\UFED_Analyzer_17.02.05_03-00_6.0.0.128\EncryptedSetup}}"/>
<Define Name="_PathOfdata" Value="SharedData\myfolder\mydata.xml"/>
<ActionSet Name="DEBUG">
<Actions>
<SpecialAction ActionName="myactionname">
<CaseName>123</CaseName>
<UaeSendQueryValues>
<URL>192.168.75.133</URL>
<RestURL></RestURL>
<UserName>user1</UserName>
<Password>aaa</Password>
<PathOfQuery>_PathOfdata</PathOfQuery>
<Method>GET</Method>
<ParamsFromFile></ParamsFromFile>
</UaeSendQueryValues>
</SpecialAction>
</Actions>
</ActionSet>
</ActionEnvironment>
I have the above xml. i need to find every PathOfQuery tag, get the text of it (in the example _PathOfdata) and then go up in the xml tree and find the first Define tag who's name = to text of PathofQuery tag and get its value (in the example "SharedData\myfolder\mydata.xml")
then i would like to replace that value with another string.
i need to do this for each PathofQuery tag that appears in the xml (it could be more then one) and i want to find always the first apparition of the Define tag (could be more than one) when i travel the tree up from the point where the PathofQuery tag was found.
I want to do this on C Sharp
any help will be appreciated.

Let's assume string s holds the above Xml. Then the following code will work for you:
XmlDocument xDoc = new XmlDocument();
xDoc.LoadXml(s);
XmlNode pathOfQuery = xDoc.SelectSingleNode("//PathOfQuery");
string pathOfQueryValue = pathOfQuery.InnerText;
Console.WriteLine(pathOfQueryValue);
XmlNode define = xDoc.SelectSingleNode("//Define[#Name='" + pathOfQueryValue + "']");
if(define!=null)
{
string defineTagValue = define.Attributes["Value"].Value;
Console.WriteLine(defineTagValue);
pathOfQuery.InnerText = defineTagValue;
Console.WriteLine(pathOfQuery.InnerText);
}

I want to create an array containing my xmldocument nodes in c#

Hello I have created an xml file with motivational quotations, and I want to read those quotations into an array.
Here is what my xml file looks like:
<?xml version="1.0" encoding="utf-8" ?>
<MotivationalQuotes>
<quotation>
<quote>Life is about making an impact, not making an income</quote>
<author>Kevin Kruse</author>
</quotation>
<quotation>
<quote>Whatever the mind of man can conceive and believe, it can achieve</quote>
<author>Napoleon Hill</author>
</quotation>
</MotivationalQuotes>
I am trying to store each individual quotation (without the author) into an array, so far I have the below code working - which creates a message box and iterates through the xml file displaying the text from each quotation.
1) How can I modify this code to create a string array, where each item in the array is a quotation (i.e. each item in the array is the contents that is currently being displayed to the messagebox in my foreach loop?
2) how do I return a random item from the array, once it is created?
3) As an extension to my question... my xml file only has motivational quotes in at the moment, but it will have more inspirational, funny etc... how can I specify to only include quotations into the array if they are inside the MotivationalQuotes tag.
Thanks for the help!
public void motivate()
{
XmlDocument doc = new XmlDocument();
doc.Load("quotations.xml");
XmlNode Node = doc.DocumentElement;
foreach (XmlNode Node1 in Node.ChildNodes)
{
MessageBox.Show(Node1.FirstChild.InnerText);
}
}

You should use XDocument and LINQ.
To get all quotes
using System.Xml.Linq;
var quotes = XDocument
.Load("quotations.xml")
.Descendants("quote")
.Select(q => q.Value)
.ToArray();

Find and delete all occurrences of a string that starts with x

I'm parsing an XML file, to compare it to another XML file. XML Diff works nicely, but we have found there are a lot of junk tags that exist in one file, not in the other, that have no bearing on our results, but clutter up the report. I have loaded the XML file into memory to do some other things to it, and I'm wondering if there is an easy way at the same time to go through that file, and remove all tags that start with, as an example color=. The value of color is all over the map, so not easy to grab them all remove them.
Doesn't seem to be any way in XML Diff to specify, "ignore these tags".
I could roll through the file, find each instance, find the end of it, delete it out, but I'm hoping there will be something simpler. If not, oh well.
Edit: Here's a piece of the XML:
<numericValue color="-103" hidden="no" image="stuff.jpg" key="More stuff." needsQuestionFormatting="false" system="yes" systemEquivKey="Stuff." systemImage="yes">
<numDef increment="1" maximum="180" minimum="30">
<unit deprecated="no" key="BPM" system="yes" />
</numDef>
</numericValue>

If you are using Linq to XML, you can load your XML into an XDocument via:
var doc = XDocument.Parse(xml); // Load the XML from a string
Or
var doc = XDocument.Load(fileName); // Load the XML from a file.
Then search for all elements with matching names and use System.Xml.Linq.Extensions.Remove() to remove them all at once:
string prefix = "L"; // Or whatever.
// Use doc.Root.Descendants() instead of doc.Descendants() to avoid accidentally removing the root element.
var elements = doc.Root.Descendants().Where(e => e.Name.LocalName.StartsWith(prefix, StringComparison.Ordinal));
elements.Remove();
Update
In your XML, the color="-103" substring is an attribute of an element, rather than an element itself. To remove all such attributes, use the following method:
public static void RemovedNamedAttributes(XElement root, string attributeLocalNamePrefix)
{
if (root == null)
throw new ArgumentNullException();
foreach (var node in root.DescendantsAndSelf())
node.Attributes().Where(a => a.Name.LocalName == attributeLocalNamePrefix).Remove();
}
Then call it like:
var doc = XDocument.Parse(xml); // Load the XML
RemovedNamedAttributes(doc.Root, "color");

Read XML Attribute using C#

<Block ID="Ar0010100" BOX="185 211 825 278" ELEMENT_TYPE="h1" SEQ_NO="0" />
This is an example from my XML code. In C# I need to store ONLY ID'S inside of a block element in one variable, and ONLY Box's inside of a block element. I have been trying to do this for two days, and I don't know how to narrow down my question.
XmlNodeList idList = doc.SelectNodes("/Block/ID");
doesn't work... Any version of doc.selectnode, doc.GetElementBy... doesn't return the right element/children/whatever you call it. I'm not able to find documentation that tells me what I'm trying to reference. i don't know if ID or BOX are children, if they're attributes or what. This is my first time using XML, and I can't seem to narrow down my problem.

You can simply use following code
XmlNodeList elemList = doc.GetElementsByTagName("Your Element");
for (int i = 0; i < elemList.Count; i++)
{
string attrVal = elemList[i].Attributes["ID"].Value;
}
Demo: https://dotnetfiddle.net/5PpNPk
the above code is taken from here Read XML Attribute using XmlDocument

The problem is that ID is actually neither child nor part.
It's a node's attribute. You can access it this way:
doc.SelectSingleNode("/Block").GetAttribute("ID")
// or
doc.SelectSingleNode("/Block").Attributes["ID"].Value
Of course, you can iterate through them:
foreach (XmlElement element in doc.SelectNodes("/Block"))
{
Console.WriteLine(element.GetAttribute("ID"));
}
You also can ensure that it contains ID attribute, so, you won't get NullReferenceException or other exception. Use the following XPath:
foreach (XmlElement element in doc.SelectNodes("/Block[#ID]"))
{
Console.WriteLine(element.GetAttribute("ID"));
}

Your attempted xpath tried to find <Block> element having child element <ID>. In xpath, you use # at the beginning of attribute name to reference an attribute, for example /Block/#ID.
Given a correct xpath expression as parameter, SelectNodes() and SelectSingleNode() are capable of returning attributes. Here is an example :
var xml = #"<Block ID=""Ar0010100"" BOX=""185 211 825 278"" ELEMENT_TYPE=""h1"" SEQ_NO=""0"" />";
var doc = new XmlDocument();
doc.LoadXml(xml);
XmlNodeList idList = doc.SelectNodes("/Block/#ID");
foreach(XmlNode id in idList)
{
Console.WriteLine(id.Value);
}
Demo

How to get data from an XML File in C# using XMLDocument class?

Good Evening All, and happy weekend!.
I have been trying all day to understand how to parse my simple XML file so I can understand it enough to write a personal project I want to work on.
I have been reading articles on this site and others but cannot get past where I am :(
My XML Document is ...
<XML>
<User>
<ID>123456789</ID>
<Device>My PC</Device>
</User>
<History>
<CreationTime>27 June 2013</CreationTime>
<UpdatedTime>29 June 2013</UpdatedTime>
<LastUsage>30 June 2013</LastUsage>
<UsageCount>103</UsageCount>
</History>
<Configuration>
<Name>Test Item</Name>
<Details>READ ME</Details>
<Enabled>true</Enabled>
</Configuration>
</XML>
I am trying to get the value in the details element (READ ME). Below is my code
// Start Logging Progress
Console.WriteLine("Test Application - XML Parsing and Creating");
Console.ReadKey();
// Load XML Document
XmlDocument MyDoc = new XmlDocument(); MyDoc.Load(#"E:\MyXML.XML");
// Select Node
XmlNode MyNode = MyDoc.SelectSingleNode("XML/Configuration/Details");
// Output Node Value
Console.WriteLine(String.Concat("Details: ", MyNode.Value));
// Pause
Console.ReadKey();
My console application is running and outputing "Target: " but not giving me the detail within the element.
Can somebody see why this is happening, and perhaps give me advice if I am completely off the wheel? I have no previous knowledge in reading XML files; hence where I am now :)
Thanks! Tom

With the your XPATH expression
// Select Node
XmlNode MyNode = MyDoc.SelectSingleNode("XML/Configuration/Details");
your are selection an element so the type of the MyNode will be XmlElement but the Value of an XmlElement is always null (see on MSDN) so you need to use XmlElement.InnerText or XmlElement.InnerXml isntead.
So the changed your code to
// Output Node Value
Console.WriteLine(String.Concat("Details: ", MyNode.InnerText));
Or you can select the content of an element with using the XPATH text() function, in this case MyNode will be XmlText where you get its value with Value:
// Select Node
XmlNode MyNode = MyDoc.SelectSingleNode("XML/Configuration/Details/text()");
// Output Node Value
Console.WriteLine(String.Concat("Details: ", MyNode.Value));
As a sidenote if you are anyway learning XML manipulation in C# you should check out LINQ to XML which is another/newer way to working with XML in C#.

Just for interest, a little-known "simple" syntax is this:
XmlDocument myDoc = new XmlDocument();
myDoc.Load(#"D:\MyXML.XML");
string details = myDoc["XML"]["Configuration"]["Details"].InnerText;
Note that this (and the XPath approach) could go pop if your XML doesn't conform to the structure you're expecting, so you'd ideally put some validation in there as well.

U can use Xpath library for that (u must include "System.Xml.XPath"):
XmlDocument document = new XmlDocument();
document.Load("MyXml.xml");
XPathNavigator navigator = document.CreateNavigator();
foreach (XPathNavigator nav in navigator.Select("//Details"))
{
Console.WriteLine(nav.Value);
}
the above code iterate over every node called (Details) extracting information and print it.

If you want to retrieve a particular value from an XML file
XmlDocument _LocalInfo_Xml = new XmlDocument();
_LocalInfo_Xml.Load(fileName);
XmlElement _XmlElement;
_XmlElement = _LocalInfo_Xml.GetElementsByTagName("UserId")[0] as XmlElement;
string Value = _XmlElement.InnerText;
Value contains the text value