Develop Reference

Error while DeSerializing XML with namespaces to C# Object

I have an XML file which starts something like this:-
<?xml version="1.0" encoding="UTF-8"?>
<Deal xmlns="http://schemas.datacontract.org/2004/07/DealioCapLinkLib.Dealio.Models" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
<AccountingDate>2019-09-30</AccountingDate>
When I try to convert this object to XML like below, I get an error:-
private static void Prod_Error_Test()
{
string prodRequestXml = File.ReadAllText("ProdXml.xml");
var serializer = new XmlSerializer(typeof(Service.Deal));
Service.Deal request ;
var reader = new StringReader(prodRequestXml);
request = (Service.Deal)serializer.Deserialize(reader);
}
The Error Message is "There is an error in XML document (2, 2).". The Inner Exception Message is "<Deal xmlns='http://schemas.datacontract.org/2004/07/DealioCapLinkLib.Dealio.Models'> was not expected."
Service.Deal is a WCF Proxy.So I may not be able to add any attributes. Can anyone suggest what to do here ?

Being a WCF proxy doesn't preclude adding attributes; in particular, it is usually a partial class, which means you can have your own separate file, with:
namespace Service
{
[XmlRoot("Deal", Namespace = "http://schemas.datacontract.org/2004/07/DealioCapLinkLib.Dealio.Models")]
partial class Deal {}
}
But ultimately: if the type doesn't conveniently fit the XML: stop fighting it - create a new separate type that fits the XML and works well with XmlSerializer, and then map between the two types in your own code.

Validate XML against XSD error: This is an invalid xsi:type

I am writing a routine in C# to validate an Xml file using XmlDocument. Everything seems to be fine except something that i cant understand.
my xml:
<?xml version="1.0" encoding="utf-8"?>
<bdo_fosfec:RegistrosPagosElement xsi:type="bdo_fosfec:RegistrosPagos"
xmlns:bdo_fosfec="http://asocajas.hp.com/bdo_fosfec"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<registro54 xsi:type="bdo_fosfec:Registro54">
<registro82 xsi:type="bdo_fosfec:Registro82">
...
</registro82>
</registro54>
<registro54 xsi:type="bdo_fosfec:Registro54">
<registro82 xsi:type="bdo_fosfec:Registro82">
...
</registro82>
</registro54>
</bdo_fosfec:RegistrosPagosElement>
and the xsd:
<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema xmlns="http://asocajas.hp.com/bdo_fosfec" xmlns:tns1="http://asocajas.hp.com/bdo_fosfec" xmlns:ecore="http://www.eclipse.org/emf/2002/Ecore" xmlns:xsd="http://www.w3.org/2001/XMLSchema" targetNamespace="http://asocajas.hp.com/bdo_fosfec">
<xsd:annotation>
<xsd:documentation>BOMORIGIN::platform:/resource/bdo_Fosfec/Business%20Objects/bdo_Fosfec.bom#_rs4Sa9itEeSR9aIqvSWzoQ</xsd:documentation>
</xsd:annotation>
...
</xsd:schema>
here is my code to validate my xml against xsd,
XmlDocument xml = new XmlDocument();
xml.Schemas.Add("http://asocajas.hp.com/bdo_fosfec", PathFileXSD);
//load my xml
xml.LoadXml(stringXml);
//event handler to manage the errors from XmlDocument object
ValidationEventHandler veh = new ValidationEventHandler(ErrorValidacion);
//validate my xml
xml.Validate(veh);
and the event handler ErrorValidacion will show me the error
private void ErrorValidacion(object sender, ValidationEventArgs e)
{
string concat = string.Empty;
switch (e.Severity)
{
case XmlSeverityType.Error:
concat = string.Format("Error: {0}", e.Message);
break;
case XmlSeverityType.Warning:
concat = string.Format("Warning {0}", e.Message);
break;
}
}
When run my program the error msj is:
This is an invalid xsi:type 'http://asocajas.hp.com/bdo_fosfec:RegistrosPagos'.
The thing is.. why this message?, The xsi:type for my xml isn't
http://asocajas.hp.com/bdo_fosfec:RegistrosPagos
The xsi:type for my xml is
xsi:type="bdo_fosfec:RegistrosPagos"
Where does the xsi:type http://asocajas.hp.com/bdo_fosfec:RegistrosPagos come from?
So, How can I solve this issue without having to modify the xml? (Because the xml is based on an xslt)

The error message is saying that the XSD does not include a declaration for RegistrosPagos in the http://asocajas.hp.com/bdo_fosfec namespace.
It is using the expanded form of the namespace to report the error instead of the namespace prefix because the namespace prefix is arbitrary and insignificant by definition. This is entirely proper.
In fact, the XSD you've posted does not include a RegistrosPagos in the http://asocajas.hp.com/bdo_fosfec namespace.
See also: How to restrict the value of an XML element using xsi:type in XSD?

C#/XNA XML serialization

First time using serialization in XNA so forgive me if I'm over looking soemthing obvious.
Basically, in my game, I have two objects, Square (storing data about each square in the game) and one called Enemy (storing information and behaviours about the enemey).
I want to serialize this data so I can save and load it in at a later date.
I've put them both into a single object called Data and serialised that.
However the xml data reads like so:
<?xml version="1.0" encoding="utf-8"?>
<Data xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<squares>
<Square />
<Square />
<Square />
<Square />
<Square />
<Square />
<Square />
<Square />
<Square />
etc
My code:
Data.cs
public class Data
{
public Square[] squares;
public Enemy[] enemies;
public Data()
{
}
}
SaveFucntion:
Data data = new Data();
data.squares = squares;
data.enemies = enemies;
StreamWriter file2 = new StreamWriter(Content.RootDirectory + "\\xml.txt");
XmlSerializer x = new XmlSerializer(typeof(Data));
x.Serialize(file2, data);
What am I doing wrong? or what would be the best way to achieve this?

XmlDocument and getting specific Attributes using xPath

I have seen a couple of examples on here where Xpath is used in conjunction with XmlDocument to get a specific attribute from an XmlDocument Node.... Example
Console.WriteLine(xmlDocument.SelectSingleNode("//dataTemplateSpecification/templates/template/elements/element/#name").Value.ToString());
For some reason I am getting a "Object reference not set to an instance of an object." exception. Whenever I run across that particular line of code. I have a little test app that I have set up to test out different things before I put them into my main project...
Here is the code for that...
namespace ReadXml
{
class Program
{
static void Main(string[] args)
{
//string fulXmlPath = System.Web.Hosting.HostingEnvironment.MapPath("~/App_Data/templateExample.xml");
XDocument xDocument = XDocument.Load("C:\\Users\\derekww\\Documents\\XML Documents\\templateExample.xml");
XElement elem = xDocument.Element("dataTemplateSpecification"); ;
XmlDocument xmlDocument = new XmlDocument();
StreamReader file = new StreamReader("C:\\Users\\derekww\\Documents\\XML Documents\\templateExample.xml");
xmlDocument.Load(file);
//XmlDocument theDoc = new XmlDocument();
//using (var xmlReader = xDocument.CreateReader())
//{
// xmlDocument.Load(xmlReader);
//}
//Console.WriteLine(elem.ToString());
XmlNode xNode = xmlDocument.SelectSingleNode("//dataTemplateSpecification/templates/template/elements/element");
Console.WriteLine("WORK PLEASE!!!! {0}", xNode.Value.ToString());
//Console.WriteLine(xmlDocument.SelectSingleNode("//dataTemplateSpecification/templates/template/elements/element/#name").Value.ToString());
//Console.WriteLine("This better Work>>>> {0}", xmlDocument.Attributes["/dataTemplateSpecification/templates/template/elements/element/#name"].Value);
Console.ReadLine();
//Console.WriteLine("This better Work>>>> {0}", xmlDocument.SelectSingleNode("//dataTemplateSpecification/templates/template/elements/element/#name").Value);
//foreach (String AttVal in xmlDocument.SelectSingleNode("//dataTemplateSpecification/templates/template/elements/element/#name").Value)
{
//Console.WriteLine("This better Work>>>> {0}", AttVal);
}
}
}
}
Here is part of the XML that I used...
<?xml version="1.0" encoding="utf-8"?>
<dataTemplateSpecification id="id1" name="name1" xmlns="http://EADIS.upmc.com /DataTemplateSpecification.xsd">
<description xmlns="">
<html>text</html>
</description>
<templates xmlns="">
<template>
<elements>
<element id="element0" name="PatientId" display="Patient ID" dataType="String" value="0101010111111" visable="false" readOnly="true">
<validation>
<rules>
<rule id="0" test="#element0.value == ''">
<fail>
<html><b>Patient ID is null, value must be present</b></html>
</fail>
</rule>
</rules>
</validation>
</element>
</elements>
</template>
<templates>
I just showed you the part that you need to understand the xml structure. I assure you that it is well formed. I think I asked this question before but somehow or the other it didn't get posted (maybe I forgot, who knows). Any help with this would be greatly appreciated. If I come up with a reason for why it isn't working I will be sure to let you guys know.
Thank You.

Why can't you use this XPath:
xmlDocument.SelectSingleNode("//templates/template/elements/element/#name").Value

You need to specify the namespace of the XML file in your code.
See here for more info: How to select xml root node when root node has attribute?

XML: Object reference not set to an instance of an object

<?xml version="1.0" encoding="utf-8" ?>
<siteMap xmlns="http://schemas.microsoft.com/AspNet/SiteMap-File-1.0" >
<siteMapNode url="~/" title="Úvodní stránka">
<siteMapNode url="Pocitace" title="Počítače" />
<siteMapNode url="Elektronika" title="Elektronika" />
</siteMapNode>
</siteMap>
And I write to this file new data:
XmlDocument originalXml = new XmlDocument();
originalXml.Load(Server.MapPath("../../Web.sitemap"));
XmlAttribute title = originalXml.CreateAttribute("title");
title.Value = newCategory;
XmlAttribute url = originalXml.CreateAttribute("url");
url.Value = seoCategory;
XmlNode newSub = originalXml.CreateNode(XmlNodeType.Element, "siteMapNode", null);
newSub.Attributes.Append(title);
newSub.Attributes.Append(url);
originalXml.SelectSingleNode("siteMapNode").AppendChild(newSub);
But I get:
Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.
Source Error:
Line 49: newSub.Attributes.Append(title);
Line 50: newSub.Attributes.Append(url);
Line 51: originalXml.SelectSingleNode("siteMapNode").AppendChild(newSub);
Line 51 si red. Can u help me?
(Web.sitemap i have in root file and code I have in Someting/Someting/Someting.aspx, so adrress is correct i think.)

The call to originalXml.SelectSingleNode("siteMapNode") returns null. You need to specify the namespace.
Update:
Use this code instead of the line that throws the exception (Line 51):
XmlNamespaceManager nsmanager = new XmlNamespaceManager(originalXml.NameTable);
nsmanager.AddNamespace("x", "http://schemas.microsoft.com/AspNet/SiteMap-File-1.0");
originalXml.SelectSingleNode("x:siteMap/x:siteMapNode", nsmanager).AppendChild(newSub);
Explanation:
You made two mistakes:
Your XPath query to find the siteMapNode was not correct. The way you wrote it, it looked only at the root tag for the tag with the name "siteMapNode"
The root tag "siteMap" specifies a namespace. You need to use that namespace in your call to SelectSingleNode

I think, the xpath you give to the SelectSingleNode is wrong and it will return with null.