Develop Reference

Get Each Value on an XML Node

I have an XML that looks like this:
<HiddenTopicsValues TopicCodes="TopicValues">
<Topic>
<Code>topic_aboutme</Code>
<Value>1</Value>
</Topic>
<Topic>
<Code>topic_aboutyou</Code>
<Value>1</Value>
</HiddenTopicsValues>
My goal is to create a Dictionary that lets the <Code> act as the Key, and <Value> as the Value (of the Dictionary). I declared the dictionary as shown below:
Dictionary<string,int> dictionary_topics = new Dictionary<string,int>();
And used a for loop to iterate all the values in the XML:
// Load XML Document
XmlDocument xmlTopics = new XmlDocument();
xmlTopics.Load(path);
// Get All Hidden Topics
XmlNodeList ndTopics = xmlTopics.GetElementsByTagName("Topic");
for (int i = 0; i < ndTopics.Count; i++)
{
string _topicCode = ndTopics[i].InnerText[0].ToString();
int _topicValue = ndTopics[i].InnerText[1].ToString();
// Add Topic to Dictionary
dictionary_topics.Add(_topicCode, _topicValue);
}
I thought that this: ndTopics[i].InnerText[0] would return this: topic_aboutme
And this: ndTopics[0].InnerText[1] would return this: 1
Based on the given XML.
I tried displaying ndTopics[0].InnerText and it shows this:
topic_aboutme1
How can I separate the topic_aboutme(<Code>) and 1(<Value>)?
Forgive my naiveness, I'm not really used in utilising XML.

Real easy in Xml Linq :
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);
Dictionary<string, string> dict = doc.Descendants("Topic")
.GroupBy(x => (string)x.Element("Code"), y => (string)y.Element("Value"))
.ToDictionary(x => x.Key, y => y.FirstOrDefault());
}
}
}

Finding Specific xml nodes using XDocument

I am trying to find specific nodes in xml using XDocument. The xml also has a namespace which am importing.
Below is the xml specs
<?xml version="1.0" encoding="UTF-8"?>
<tns:response xmlns:tns="http://amazon.com/amazonservices">
<tns:responseDirect>
<tns:responseExtract>
<tns:A>ExtractName</tns:A>
</tns:responseExtract>
<tns:responses>
<tns:Name>Response1</tns:Name>
<tns:Include>No</tns:Include>
</tns:responses>
<tns:responses>
<tns:Name>Response2</tns:Name>
<tns:Include>Yes</tns:Include>
</tns:responses>
<tns:responses>
<tns:Name>Response3</tns:Name>
</tns:responses>
</tns:responseDirect>
I want to retrieve all responses and also only those nodes which have Include nodes present.
I am trying below code to fetch it but I am getting none of the nodes.
XDocument document = XDocument.Parse(xml);
var name = from nm in document.Elements("responses")
select nm;
Can anyone let me know how to fix the issue?I need to only fetch the response node.
Thanks in Advance

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);
XNamespace ns = doc.Root.GetNamespaceOfPrefix("tns");
var results = doc.Descendants(ns + "responses")
.Where(x => x.Elements(ns + "Include").Any())
.Select(x => new {
include = (string)x.Element(ns + "Include"),
name = (string)x.Element(ns + "Name")
}).ToList();
}
}
}

Add additional elements from a dictionary to the XML during serialization in C#

A part of the XML looks like this.
<element>
<subelment1>text</subelement1>
<subelement2>text2</subelement2>
...
</element>
It has a lot of sub elements.
I would like to add additional elements during the serialization, but the number and name is always different.
So it will be something like this:
<element>
<subelment1>text</subelement1>
<subelement2>text2</subelement2>
...
<additionalelement1>element1text</additionalelement1>
<additionalelement2>element2text</additionalelement2>
...
</element>
The additional elements are stored in a dictionary, where the element name is the key.
Is there a way to accomplish this with the XmlSerializer or any other serializer?

I post this solution a lot :
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.Xml.Linq;
namespace ConsoleApplication34
{
class Program
{
const string FILENAME = #"c:\temp\test.xml";
static void Main(string[] args)
{
XDocument doc = XDocument.Load(FILENAME);
XElement element = doc.Descendants("element").FirstOrDefault();
Dictionary<string,string> dict = element.Elements().GroupBy(x => x.Name.LocalName, y => (string)y)
.ToDictionary(x => x.Key, y => y.FirstOrDefault());
}
}
}

Deserialize XML containing a Dictionary

I have an XML file containing identifiers that I would like Get, the xml look like
<Dictionary
x:TypeArguments="x:String, x:Object"
xmlns="clr-namespace:System.Collections.Generic;assembly=mscorlib"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
>
<List x:TypeArguments="x:Int32" x:Key="key" Capacity="4">
<x:Int32>60371408</x:Int32>
<x:Int32>60371409</x:Int32>
</List>
</Dictionary>
The identifiers that I want to get is 60371408, 60371409

I just found a solution :
Thank you for your reaction :D

Create an XmlSerializer:
var serializer = new XmlSerializer(typeof(Dictionary<string, object>));
...then deserialize. You haven't specified what form this XML is in, whether you have a string or a stream, for example. Here's how you'd deserialize an XML string:
var reader = new StringReader(xml);
var dict = serializer.Deserialize(reader);
Now you have your Dictionary<string, object>, but since values are plain objects, you'll need to cast the values:
var list = (List<int>)dict["key"];

Try xml linq
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.Xml.Linq;
namespace ConsoleApplication1
{
public class Program
{
const string FILENAME = #"c:\temp\test.xml";
public static void Main()
{
XDocument doc = XDocument.Load(FILENAME);
XElement dictionary = doc.Descendants().Where(x => x.Name.LocalName == "Dictionary").FirstOrDefault();
XNamespace xNs = dictionary.GetNamespaceOfPrefix("x");
var results = dictionary.Descendants(xNs + "Int32").Select(x => (int)x).ToList();
}
}
}

What is the best way to read an attribute from an xml string in c#

I have the following xml as string:
<cfdi:Comprobante version="3.0"
xsi:schemaLocation="http://www.sat.gob.mx/cfd/3 http://www.sat.gob.mx/sitio_internet/cfd/3/cfdv3.xsd"
serie="A"
folio="6"
fecha="2011-07-22T13:51:42"
formaDePago="Pago en una sola exhibición"
sello="XlSJYAxauwYbI"
noCertificado="00001000000101242210"
certificado="YtEQOHw02OGx6E="
condicionesDePago="Paguese a mas tardar el 21/08/2011."
subTotal="123"
Moneda="MXN"
total="123"
tipoDeComprobante="ingreso">
<cfdi:Complemento>
<tfd:TimbreFiscalDigital FechaTimbrado="2011-07-22T13:51:47"
UUID="41C8A54F-4956-1BAD-F2CB-48E8343918FD"
noCertificadoSAT="00001000000102616613"
selloCFD="wrwerewe"
version="1.0"
xsi:schemaLocation="http://www.sat.gob.mx/TimbreFiscalDigital http://www.sat.gob.mx/sitio_internet/timbrefiscaldigital/TimbreFiscalDigital.xsd"/>
</cfdi:Complemento>
</cfdi:Comprobante>
I want to read the attribute UUID inside the node tfd:TimbreFiscalDigital so I was wondering how to do this using c#, this might be silly but please understand I'm new in c#.
Note: This xml is inside a string, not in a file (our provider's webservice returns the xml as string, is not our fault)
Note2: I can use Linq, or any other library, that's not a prob
Thanks!!

I wrapped this in a root node declaring the namespaces. I'm also using XPath to query for the node.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml.Linq;
using System.Xml.XPath;
using System.Xml;
class Program
{
static void Main(string[] args)
{
var doc = #"
<Root xmlns:xsi='http://someuri' xmlns:cfdi='http://someuri2' xmlns:tfd='http://someuri3'>
<cfdi:Comprobante version='3.0'
xsi:schemaLocation='http://www.sat.gob.mx/cfd/3 http://www.sat.gob.mx/sitio_internet/cfd/3/cfdv3.xsd'
serie='A'
folio='6'
fecha='2011-07-22T13:51:42'
formaDePago='Pago en una sola exhibición'
sello='XlSJYAxauwYbI'
noCertificado='00001000000101242210'
certificado='YtEQOHw02OGx6E='
condicionesDePago='Paguese a mas tardar el 21/08/2011.'
subTotal='123'
Moneda='MXN'
total='123'
tipoDeComprobante='ingreso'>
<cfdi:Complemento>
<tfd:TimbreFiscalDigital FechaTimbrado='2011-07-22T13:51:47'
UUID='41C8A54F-4956-1BAD-F2CB-48E8343918FD'
noCertificadoSAT='00001000000102616613'
selloCFD='wrwerewe'
version='1.0'
xsi:schemaLocation='http://www.sat.gob.mx/TimbreFiscalDigital http://www.sat.gob.mx/sitio_internet/timbrefiscaldigital/TimbreFiscalDigital.xsd'/>
</cfdi:Complemento>
</cfdi:Comprobante>
</Root>";
var uuid = XDocument.Parse(doc)
var uuid = XDocument.Parse(doc)
.XPathSelectElement("//*[local-name() = 'TimbreFiscalDigital']")
.Attribute("UUID").Value;
// Work with uuid
Console.Read();
}
}

Because you have namespace prefixes, you'll have to use XNamespace instances to help you reference the elements.
// We use these to establish our namespace prefixes
XNamespace cfdi = #"http://www.sat.gob.mx/cfd/3";
XNamespace tfd = #"http://www.sat.gob.mx/TimbreFiscalDigital";
var xdoc = XDocument.Parse(xml);
// Walk down the XML tree to tfd:TimbreFiscalDigital
var elt = xdoc.Element(cfdi + "Comprobante")
.Element(cfdi + "Complemento")
.Element(tfd + "TimbreFiscalDigital");
// Alternately
// var elt = xdoc.Descendants(tfd + "TimbreFiscalDigital")
// .First();
var uuid = (string)elt.Attribute("UUID");
// You can convert attributes and element values to lots of built-in types
// See the Explicit Conversions for XAttribute and XElement on MSDN
var date = (DateTime)elt.Attribute("FechaTimbrado");
Further reading:
MSDN: XElement Operators
MSDN: XAttribute Operators

I find linq's XDocument and related classes to be particularly simple and straightforward to use:
string uuid = XDocument.Parse(xmlString)
.Descendants("TimbreFiscalDigital")
.Attributes("UUID")
.First()
.Value;