Develop Reference

How to get the value of a child element in xml

I am trying to edit a existing XML file through C# and need to identify the sections I want (block name="treeDeadTree01" and block name="treeDeadTree02") Then get the value of "count" in the child element "drop". I have been able to identify the elements (block name="treeDeadTree01" and block name="treeDeadTree02") but cant figure out how to get the value of "count" from the element "drop" of the specific elements (block name="treeDeadTree01" and block name="treeDeadTree02")
The XML file is a config file from the game 7 Days To Die and I am trying to make a application to more easily edit the configs of the game. After I find the value of "count" I am putting it into a DataGridView.
My question is, how after I find the block element I want do I find the value of "count" in the "drop" child element of the block element?
This is a section of the XML file I am trying to edit
<blocks>
<block name="treeDeadTree01">
<property name="Extends" value="treeMaster" />
<property name="Model" value="Entities/Trees/White_Oak22Prefab" />
<property name="ModelOffset" value="0,-0.3,0" />
<property name="MultiBlockDim" value="1,4,1" />
<property name="BigDecorationRadius" value="4" />
<property name="Collide" value="movement,melee,bullet,arrow,rocket" />
<drop event="Harvest" name="resourceWood" count="515" tag="oreWoodHarvest" />
<property name="ParticleOnDeath" value="treeGib_dead_01" />
<!-- <drop event="Destroy" name="treePlantedMaple1m" count="x"/> -->
<property name="SortOrder2" value="0140" />
<!-- SortTree -->
</block>
<block name="treeDeadTree02">
<!-- almost a shrub -->
<property name="Extends" value="treeMaster" />
<property name="IsTerrainDecoration" value="true" />
<property name="Model" value="Entities/Trees/Haunted_Shrub_WastelandPrefab" />
<property name="ModelOffset" value="0,-0.3,0" />
<property name="Collide" value="melee,rocket" />
<!-- no movement effect on Shape="ModelTree" -->
<drop event="Harvest" name="resourceWood" count="215" tag="oreWoodHarvest" />
<property name="ParticleOnDeath" value="treeGib_dead_02" />
<!-- <drop event="Destroy" name="treePlantedMaple1m" count="x"/> -->
<property name="FilterTags" value="foutdoor,ftrees,fshrubbery" />
<property name="SortOrder1" value="a060" />
</block>
</blocks
My current code
string[] GatherRateNames = {"treeDeadTree01", "treeDeadTree02"};
string XMLBlocksPath = "F:\\SteamLibrary\\steamapps\\common\\7 Days To Die\\Data\\Config\\blocks.xml";
private void makeGatherRatesList()
{
XmlDocument doc = new XmlDocument();
doc.Load(XMLBlocksPath);
XmlNodeList aNodes = doc.SelectNodes("/blocks/block");
foreach (XmlNode aNode in aNodes)
{
XmlAttribute idAttribute = aNode.Attributes["name"];
if (GatherRateNames.Contains(idAttribute.ToString()))
{
addItemToList(idAttribute.ToString(),"Value of count");
}
}
}
private void addItemToList(string itemName, int itemValue)
{
}
In the end I want to get the name of the block like "treeDeadTree01" then get the value of "count" inside the element "drop" of that block and put both of those in a DataGridView and be able to edit the value of count through the DataGridView then repeat that with every block I need.

Using Xml Linq :
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.Xml.Linq;
using System.Globalization;
namespace ConsoleApplication1
{
class Program
{
const string FILENAME = #"c:\temp\test.xml";
static void Main(string[] args)
{
CultureInfo culture = (CultureInfo)CultureInfo.InvariantCulture.Clone();
culture.NumberFormat.NumberDecimalSeparator = ",";
culture.NumberFormat.NumberGroupSeparator = ".";
XmlReader reader = XmlReader.Create(FILENAME);
List<Block> blocks = new List<Block>();
while (!reader.EOF)
{
if (reader.Name != "block")
{
reader.ReadToFollowing("block");
}
if (!reader.EOF)
{
Block newBlock = new Block();
blocks.Add(newBlock);
XElement xBlock = (XElement)XElement.ReadFrom(reader);
newBlock.name = (string)xBlock.Attribute("name");
XElement drop = xBlock.Element("drop");
if (drop != null)
{
object count = drop.Attribute("count");
newBlock.count = (count == null)? null : (decimal?)decimal.Parse((string)count, culture);
}
}
}
}
public class Block
{
public string name { get; set; }
public decimal? count { get; set; }
}
}
}

How to read xml element from the following file?

I have the following xml file and I am trying to read name element which I am not able to, any idea how can I read that and other elements ?
<?xml version="1.0" encoding="us-ascii"?>
<WLANProfile xmlns="http://www.microsoft.com/networking/WLAN/profile/v1">
<name>tata</name>
<SSIDConfig>
<SSID>
<name>SampleSingleSignOn</name>
</SSID>
</SSIDConfig>
<connectionType>ESS</connectionType>
<connectionMode>auto</connectionMode>
<autoSwitch>false</autoSwitch>
<MSM>
<security>
<authEncryption>
<authentication>WPA2</authentication>
<encryption>AES</encryption>
<useOneX>true</useOneX>
</authEncryption>
<OneX xmlns="http://www.microsoft.com/networking/OneX/v1">
<cacheUserData>true</cacheUserData>
<maxAuthFailures>3</maxAuthFailures>
<authMode>user</authMode>
<singleSignOn>
<type>preLogon</type>
<maxDelay>10</maxDelay>
</singleSignOn>
<EAPConfig>
<EapHostConfig xmlns="http://www.microsoft.com/provisioning/EapHostConfig"
xmlns:eapCommon="http://www.microsoft.com/provisioning/EapCommon"
xmlns:baseEap="http://www.microsoft.com/provisioning/BaseEapMethodConfig">
<EapMethod>
<eapCommon:Type>25</eapCommon:Type>
<eapCommon:AuthorId>0</eapCommon:AuthorId>
</EapMethod>
<Config xmlns:baseEap="http://www.microsoft.com/provisioning/BaseEapConnectionPropertiesV1"
xmlns:msPeap="http://www.microsoft.com/provisioning/MsPeapConnectionPropertiesV1"
xmlns:msChapV2="http://www.microsoft.com/provisioning/MsChapV2ConnectionPropertiesV1">
<baseEap:Eap>
<baseEap:Type>25</baseEap:Type>
<msPeap:EapType>
<msPeap:ServerValidation>
<msPeap:DisableUserPromptForServerValidation>false</msPeap:DisableUserPromptForServerValidation>
<msPeap:TrustedRootCA />
</msPeap:ServerValidation>
<msPeap:FastReconnect>true</msPeap:FastReconnect>
<msPeap:InnerEapOptional>0</msPeap:InnerEapOptional>
<baseEap:Eap>
<baseEap:Type>26</baseEap:Type>
<msChapV2:EapType>
<msChapV2:UseWinLogonCredentials>true</msChapV2:UseWinLogonCredentials>
</msChapV2:EapType>
</baseEap:Eap>
<msPeap:EnableQuarantineChecks>false</msPeap:EnableQuarantineChecks>
<msPeap:RequireCryptoBinding>false</msPeap:RequireCryptoBinding>
<msPeap:PeapExtensions />
</msPeap:EapType>
</baseEap:Eap>
</Config>
</EapHostConfig>
</EAPConfig>
</OneX>
</security>
</MSM>
</WLANProfile>
And I am reading like this:
XDocument xdoc = XDocument.Load("xmlfile1.xml");
xdoc.Root.Element("name")
it returns null element.

You have to take the XML namespace into account:
XNamespace ns = "http://www.microsoft.com/networking/WLAN/profile/v1";
XElement name = xdoc.Root.Element(ns + "name");

How to extract all nodes of same level

I am trying to get all folder caption attribute and want to store in list
Below is my XML File
<?xml version="1.0" encoding="utf-16" ?>
<Folders Name="MyFolderName">
<Folder Caption="Bank">
<Card Caption="BankName1">
<Property Type="String" Caption="Bank">Bank1</Property>
</Card>
<Card Caption="BankName2">
<Property Type="String" Caption="Bank">Bank2</Property>
</Card>
</Folder>
<Folder Caption="Bills">
<Card Caption="BillName1">
<Property Type="Numeric" Caption="BillName">BillName1Data</Property>
</Card>
<Card Caption="BillName2">
<Property Type="Numeric" Caption="BillName1">BillName2Data</Property>
</Card>
</Folder>
</Folders>
below is my query
public static List<Folder> ExtractFolders()
{
XDocument doc = XDocument.Load(#"I:\WindowsPhone\xmlTesting\xmlTesting\Data\VaultData.xml");
List<Folder> folders = (from c in doc.Descendants("Folders")
select new Folder()
{
Caption = c.Element("Folder").Attribute("Caption").Value
}).ToList<Folder>();
return folders;
}
I am getting only first folder
How can I can I get list of folders

Change
List<Folder> folders = (from c in doc.Descendants("Folders")
select new Folder()
{
Caption = c.Element("Folder").Attribute("Caption").Value
}).ToList<Folder>();
to
List<Folder> folders = (from c in doc.Descendants("Folder")
select new Folder()
{
Caption = c.Attribute("Caption").Value
}).ToList<Folder>();

Changing values in XML file

I need to change password values in my configuration.xml .
Password need to be changed for following users :
tsuer1
github
wtsntro
wtsntrw and so on.
Format of configuration.xml file is like following :
<?xml version="1.0" encoding="UTF-8"?>
<server xmlns="urn:jboss:domain:1.2">
<extensions>
<extension module="org.jboss.as.clustering.infinispan" />
<extension module="org.jboss.as.cmp" />
<extension module="org.jboss.as.ejb3" />
</extensions>
<system-properties>
<property name="SERVER" value="JBOSS" />
<property name="FTP_USER" value="adobenet\wtsntrw" />
<property name="FTP_PASSWORD" value="password value" />
<property name="FTP_READ_USER" value="adobenet\\wtsntro" />
<property name="FTP_READ_PASS" value="password value" />
<property name="API_SECRET_KEY" value="wxrocks" />
<property name="API_ENV" value="regular" />
<property name="PRERELEASE_PASSWORD" value="prerelease" />
<property name="watson.git_user" value="github" />
<property name="watson.git_pwd" value="password value" />
<property name="teststudio.user" value="tsuser1" />
<property name="teststudio.pwd" value="password value" />
</system-properties>
</server>
And following is the code i tried but failed :
XmlDocument doc = new XmlDocument();
string path = #"C:\Users\karansha\Desktop\configuration.xml"; // location of configuration.xml file.
doc.Load(path);
// Using foreach loop for specific Xmlnodes.
foreach (XmlNode selectNode in doc.SelectNodes("server/system-properties/property"))
{
if (selectNode.Attributes["name"].Value == "teststudio.pwd") // tsuser1
{
selectNode.Attributes["value"].Value = "new password"; // changes password value for "FTP_USER".
}
if (selectNode.Attributes["name"].Value == "watson.git_pwd") //github
{
selectNode.Attributes["value"].Value = "new passwordx"; // changes password value for "FTP_READ_USER".
}
if (selectNode.Attributes["name"].Value == "FTP_READ_PASS") // wtsntro
{
selectNode.Attributes["value"].Value = "new_passwordy"; // changes password value for "FTP_PASSWORD".
}
}
doc.Save(path); // Save changes.
Console.WriteLine("Password changed successfully");
Console.ReadLine();

Your Xml elements are contained in a NameSpace, so your XPath needs to account for that.
See:
XPath on an XML document with namespace
XML Namespaces and How They Affect XPath and XSLT
XmlDocument doc = new XmlDocument();
doc.Load(path);
var nm = new XmlNamespaceManager(doc.NameTable);
nm.AddNamespace("jb", "urn:jboss:domain:1.2");
foreach (XmlNode selectNode in doc.SelectNodes("jb:server/jb:system-properties/jb:property", nm))
{
if (selectNode.Attributes["name"].Value == "teststudio.pwd") // tsuser1
{
selectNode.Attributes["value"].Value = "new password"; // changes password value for "FTP_USER".
}
if (selectNode.Attributes["name"].Value == "watson.git_pwd") //github
{
selectNode.Attributes["value"].Value = "new passwordx"; // changes password value for "FTP_READ_USER".
}
if (selectNode.Attributes["name"].Value == "FTP_READ_PASS") // wtsntro
{
selectNode.Attributes["value"].Value = "new_passwordy"; // changes password value for "FTP_PASSWORD".
}
}
doc.Save(path); // Save changes.
Console.WriteLine("Password changed successfully");

You have to specify the namespace:
var nm = new XmlNamespaceManager(doc.NameTable);
if (doc.ChildNodes.Count != 2)
throw new XmlException("Document is not well formated.");
var serverNode = doc.ChildNodes[1];
nm.AddNamespace("a", serverNode.NamespaceURI);
foreach (XmlNode selectNode in
doc.SelectNodes("a:server/a:system-properties/a:property", nm))
{
// ...
}

How can I iterate on XML elements from an XML using XMLReader and bypass whitespaces?

Let say you have an XML like this:
<?xml version="1.0" encoding="utf-8"?>
<Class HashCode="307960707">
<Person>
<Class HashCode="-2020100801">
<FullName>
<FirstName>Dan</FirstName>
<LastName>K</LastName>
</FullName>
</Class>
<Age>20</Age>
<Class HashCode="-439631396">
<Address>
<Street>abc</Street>
<City>new york</City>
<ZipCode>30500</ZipCode>
<PhoneNumber>1245</PhoneNumber>
</Address>
</Class>
<Class HashCode="-1436395737">
<Person>
<Class HashCode="-1303968324">
<FullName>
<FirstName>katty</FirstName>
<LastName>G</LastName>
</FullName>
</Class>
<Age>18</Age>
<Class HashCode="-439631396">
<Address />
</Class>
<Class HashCode="307960707">
<Person />
</Class>
</Person>
</Class>
I want to be able to iterate only elements with XMLReader in the order they appear, which means class->Person-> class->FullName ,etc..
I was trying to navigate with methods like XMLReader.ReadStartElement() and it didn't work especially when I read a whitespaces like "\n" which appears to be an element also. :/
I was trying to bypass that whitespace with method XMLReader.Read() with no success.
Please help me understand how should I navigate that way.

XmlReader constructor has an overload that takes an XmlReaderSettings object. The XmlReaderSettings object has an IgnoreWhitespace property.
In order to read only the next elements you can implement an extension method on XmlReader.
Here's an example:
public static class ExtensionMethods
{
public static bool ReadNextElement(this XmlReader reader)
{
while (reader.Read())
if (reader.NodeType == XmlNodeType.Element)
return true;
return false;
}
}
And here's a little console application that will demonstrate this:
public class Program
{
public static void Main(string[] args)
{
var settings = new XmlReaderSettings();
settings.IgnoreWhitespace = true;
settings.IgnoreComments = true;
settings.IgnoreProcessingInstructions = true;
var reader = XmlReader.Create("XMLFile1.xml", settings);
while (reader.ReadNextElement())
Console.WriteLine(reader.Name);
}
}