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How can I XML Serialize an object that is the base class and has 4 derived classes

So this is my base class:
[Serializable]
public class Clienti:IComparable
{
public String Nume { get; set; }
public String Prenume { get; set; }
public String Adresa { get; set; }
public long CNP { get; set; }
public String SerieBuletin { get; set; }
public String DataNasterii { get; set; }
public String Telefon { get; set; }
public List<Asigurari> listaAsigurari { get; set; }
}
The class that is the List in Clienti is this one:
[Serializable]
public abstract class Asigurari
{
//atribute cu AutoProperties
public String denumireBun { get; set; }
public String numeAsigurator { get; set; }
public String locatieBun { get; set; }
public float sumaAsigurare { get; set; }
public String dataPolitaInceput { get; set; }
public String dataPolitaSfarsit { get; set; }
public String tipAsigurare { get; set; }
}
and practically this one is the base clase for the other 4 classes:
[Serializable]
public class Automobil:Asigurari
{
public String marca { get; set; }
public String model { get; set; }
public String numarImatriculare { get; set; }
public String serieSasiu { get; set; }
public int capacitateCilindrica { get; set; }
public int numarLocuri { get; set; }
public int masaMaximaAdmisa { get; set; }
}
[Serializable]
public class AlteBunuri:Asigurari
{
public String detaliiBun { get; set; }
}
[Serializable]
public class Locuinta:Asigurari
{
public String Adresa { get; set; }
public tipLocuinta tip { get; set; }
public int numarNiveluri { get; set; }
public float suprafataTotala { get; set; }
public float suprafataUtilizabila { get; set; }
public int numarCamere { get; set; }
}
[Serializable]
public class Viata:Asigurari
{
public int varsta { get; set; }
public String grupaSangvina { get; set; }
public float inaltime { get; set; }
public float greutate { get; set; }
public Gen gen { get; set; }
public StareCivila stareCivila { get; set; }
}
every class of these 4 has contructor with params, and without.
And my code for XML Serialise and Deserialize is this :
private void xMLToolStripMenuItem_Click(object sender, EventArgs e)
{
XmlSerializer xmlSerializer = new XmlSerializer(typeof(List<Clienti>),new Type[] { typeof(Asigurari)});
System.IO.FileStream fs = File.Create("lista.xml");
xmlSerializer.Serialize(fs, listaClienti);
fs.Close();
MessageBox.Show("Serializare cu succes in lista.xml");
}
private void coleToolStripMenuItem_Click(object sender, EventArgs e)
{
XmlSerializer xml = new XmlSerializer(typeof(List<Clienti>));
try
{
FileStream fs = File.OpenRead("lista.xml");
listaClienti = xml.Deserialize(fs) as List<Clienti>;
fs.Close();
populareLV();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
and I get this error:
Sorry for the long post or if I did not explain it so well.

As the exception message says, you need to let the base class know of derived types like
[XmlInclude(typeof(Automobil))]
public abstract class Asigurari
{
//atribute cu AutoProperties
public String denumireBun { get; set; }
public String numeAsigurator { get; set; }
public String locatieBun { get; set; }
public float sumaAsigurare { get; set; }
public String dataPolitaInceput { get; set; }
public String dataPolitaSfarsit { get; set; }
public String tipAsigurare { get; set; }
}

Use the XmlIncludeAttribute when you call the Serialize or Deserialize method of the XmlSerializer class.
You should specify the [XmlInclude(typeof(DerivedType1), XmlInclude(typeof(DerivedType2)...] attributes on the base class

Deserializing Server returned String to JSON

I am using the SharePoint REST API to do a search. I am pulling back the JSON results and reading them as follows:
HttpWebRequest endpointRequest = (HttpWebRequest)HttpWebRequest.Create(querystring);
endpointRequest.Method = "GET";
endpointRequest.Accept = "application/json; odata=verbose";
endpointRequest.UseDefaultCredentials = true;
HttpWebResponse endpointResponse =(HttpWebResponse)endpointRequest.GetResponse();
Stream webStream = endpointResponse.GetResponseStream();
StreamReader responseReader = new StreamReader(webStream);
var results = responseReader.ReadToEnd();
This works fine, I can see the results in JSON format. So I created a class from the JSON in VS 2017 and here is the classes created from the JSON (this was done automatically with File=>Paste Special=>Paste JSON As Classes:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApplication1
{
class SharePointRESTResults
{
public class Rootobject
{
public D d { get; set; }
}
public class D
{
public Query query { get; set; }
}
public class Query
{
public __Metadata __metadata { get; set; }
public int ElapsedTime { get; set; }
public Primaryqueryresult PrimaryQueryResult { get; set; }
public Properties1 Properties { get; set; }
public Secondaryqueryresults SecondaryQueryResults { get; set; }
public string SpellingSuggestion { get; set; }
public Triggeredrules TriggeredRules { get; set; }
}
public class __Metadata
{
public string type { get; set; }
}
public class Primaryqueryresult
{
public __Metadata1 __metadata { get; set; }
public Customresults CustomResults { get; set; }
public string QueryId { get; set; }
public string QueryRuleId { get; set; }
public object RefinementResults { get; set; }
public Relevantresults RelevantResults { get; set; }
public object SpecialTermResults { get; set; }
}
public class __Metadata1
{
public string type { get; set; }
}
public class Customresults
{
public __Metadata2 __metadata { get; set; }
public object[] results { get; set; }
}
public class __Metadata2
{
public string type { get; set; }
}
public class Relevantresults
{
public __Metadata3 __metadata { get; set; }
public object GroupTemplateId { get; set; }
public object ItemTemplateId { get; set; }
public Properties Properties { get; set; }
public object ResultTitle { get; set; }
public object ResultTitleUrl { get; set; }
public int RowCount { get; set; }
public Table Table { get; set; }
public int TotalRows { get; set; }
public int TotalRowsIncludingDuplicates { get; set; }
}
public class __Metadata3
{
public string type { get; set; }
}
public class Properties
{
public Result[] results { get; set; }
}
public class Result
{
public __Metadata4 __metadata { get; set; }
public string Key { get; set; }
public string Value { get; set; }
public string ValueType { get; set; }
}
public class __Metadata4
{
public string type { get; set; }
}
public class Table
{
public __Metadata5 __metadata { get; set; }
public Rows Rows { get; set; }
}
public class __Metadata5
{
public string type { get; set; }
}
public class Rows
{
public Result1[] results { get; set; }
}
public class Result1
{
public __Metadata6 __metadata { get; set; }
public Cells Cells { get; set; }
}
public class __Metadata6
{
public string type { get; set; }
}
public class Cells
{
public Result2[] results { get; set; }
}
public class Result2
{
public __Metadata7 __metadata { get; set; }
public string Key { get; set; }
public object Value { get; set; }
public string ValueType { get; set; }
}
public class __Metadata7
{
public string type { get; set; }
}
public class Properties1
{
public Result3[] results { get; set; }
}
public class Result3
{
public __Metadata8 __metadata { get; set; }
public string Key { get; set; }
public string Value { get; set; }
public string ValueType { get; set; }
}
public class __Metadata8
{
public string type { get; set; }
}
public class Secondaryqueryresults
{
public __Metadata9 __metadata { get; set; }
public object[] results { get; set; }
}
public class __Metadata9
{
public string type { get; set; }
}
public class Triggeredrules
{
public __Metadata10 __metadata { get; set; }
public object[] results { get; set; }
}
public class __Metadata10
{
public string type { get; set; }
}
}
}
So I now am trying to deserialize the results as follows:
SharePointRESTResults resultX = JsonConvert.DeserializeObject<SharePointRESTResults>(results());
The results I need should be in the Result2 Class. The problem I have is that this line is setting resultX = to "ConsoleApplication1.SharePointRESTResults" and nothing more. I looked in the JSON Serializing and Deserializing here: JSON Documentation but still cannot get the results into the class so I can pull out the data. I appreciate any help.

The main points are -
The Account Declaration.
JsonProperty attribute.
NOTE : If you have an object Which keys can change, Then you need to use a
Dictionary<string, T>
. A regular class won't work for that; neither will a
List<T>
.

How to specify a class that may contain another class

I want to create a class that have a class but this second class may be different each time the first class is called. For example:
public class ServerResponseObject
{
public string statusCode { get; set; }
public string errorCode { get; set; }
public string errorDescription { get; set; }
public Object obj { get; set; }
public ServerResponseObject(Object obje)
{
obj = obje;
}
}
public class TVChannelObject
{
public string number { get; set; }
public string title { get; set; }
public string FavoriteChannel { get; set; }
public string description { get; set; }
public string packageid { get; set; }
public string format { get; set; }
}
public class ChannelCategoryObject
{
public string id { get; set; }
public string name { get; set; }
}
How can I do it to call the ServerResponseObject with different objects each time, once with TVChannelObject and once with ChannelCategoryObject?

What you're looking for is a generic type parameter:
public class ServerResponseObject<T>
{
public ServerResponseObject(T obj)
{
Obj = obj;
}
public T Obj { get; set; }
}

How to Serialize to a "Collection with an Attribute" Using the XML Serializer

I have this model:
[XmlArray(ElementName = "Listing")]
[XmlArrayItem(ElementName = "Classification")]
public List<Classification> classifications { get; set; }
[XmlRoot("Listing")]
public class Classification
{
[XmlAttribute("Name")]
public string name { get; set; }
[XmlText]
public string Value { get; set; }
}
That gives me this:
<Listing>
<Classification Name="Location">AsiaPacific</Classification>
</Listing>
How should I modify my class to get this:
<Listing reference = "MyReference">
<Classification Name="Location">AsiaPacific</Classification>
</Listing>

After a few (hundreds) trial and error, I got the result that I need by modifying the model to:
[XmlElement(ElementName = "Listing")]
public ClassificationWrapper classificationWrapper { get; set; }
public class ClassificationWrapper
{
[XmlAttribute("reference")]
public string ref= "MyReference";
[XmlElement("Classification", typeof(Classification))]
public List<Classification> classifications { get; set; }
public ClassificationWrapper() { this.classifications = new List<Classification>(); }
}
public class Classification
{
[XmlAttribute("Name")]
public string name { get; set; }
[XmlText]
public string Value { get; set; }
}

Could Not Serialize object to .\Sample.xml

I am trying to serialize an object to xml, and I have the error below:
: Could Not Serialize object to .\Sample.xml
The inner exception is:
There was an error reflecting type 'SiteProvisioningFramework.Entities.SiteDefinition'.
The serializing code is:
static void Main(string[] args)
{
var siteDefinition = new SiteDefinition();
siteDefinition.Name = "ContosoIntranet";
siteDefinition.Version = "1.0.0.0";
siteDefinition.MasterPages = new List<SiteProvisioningFramework.MasterPage>()
{
new MasterPage(){
Name="seattle.master",
ServerFolder ="_catalogs/ContosoIntranet/",
UIVersion = "15",
Url="",
LocalFolder = ".MasterPages/seattle.master"
}
};
Utilities.XmlHelper.ObjectToXml(siteDefinition, #".\Sample.xml");
}
public static void ObjectToXml(object obj, string path_to_xml)
{
//serialize and persist it to it's file
try
{
System.Xml.Serialization.XmlSerializer ser = new System.Xml.Serialization.XmlSerializer(obj.GetType());
FileStream fs = File.Open(
path_to_xml,
FileMode.OpenOrCreate,
FileAccess.Write,
FileShare.ReadWrite);
ser.Serialize(fs, obj);
}
catch (Exception ex)
{
throw new Exception(
"Could Not Serialize object to " + path_to_xml,
ex);
}
}
The classes are:
public class SiteDefinition
{
[XmlAttribute ()]
public string Name { get; set; }
[XmlAttribute()]
public string Version { get; set; }
public List<MasterPage> MasterPages { get; set; }
public List<File> Files { get; set; }
public List<PageLayout> PageLayouts { get; set; }
public List<Feature> Features { get; set; }
public List<ContentType> ContentTypes { get; set; }
public List<StyleSheet> StyleSheets { get; set; }
}
public class MasterPage : File
{
[XmlAttribute()]
public string UIVersion { get; set; }
[XmlAttribute()]
public string MasterPageDescription { get; set; }
}
public class File
{
[XmlAttribute()]
public string Url { get; set; }
[XmlAttribute()]
public string Name { get; set; }
[XmlAttribute()]
public string LocalFolder { get; set; }
[XmlAttribute()]
public string ServerFolder { get; set; }
}
public class Field
{
public string Guid { get; set; }
public string Name { get; set; }
public string GroupName { get; set; }
}
public class Feature
{
public string Guid { get; set; }
}
public class ContentType
{
public string Guid { get; set; }
public string Name { get; set; }
public string GroupName { get; set; }
public List<Field> Fields { get; set; }
}
public class List
{
public List<ContentType> ContentTypes { get; set; }
public string Name { get; set; }
}
public class PageLayout : File
{
public string UIVersion { get; set; }
public string MasterPageDescription { get; set; }
}
public class StyleSheet : File
{
public string Name { get; set; }
}
public class Theme
{
public string Name { get; set; }
public string ColorFilePath { get; set; }
public string FontFilePath { get; set; }
public string BackgroundImagePath { get; set; }
public MasterPage MasterPage { get; set; }
}
any idea?

The error lies with one property in your SiteDefinition class -
public List<ContentType> ContentTypes { get; set; }
A System.Net.Mime.ContentType apparently can't be serialized. If you put an XmlIgnore attribute on it, the code runs fine.
[XmlIgnore]
public List<ContentType> ContentTypes { get; set; }
Edit:
Your ContentType is a custom class - so that is not it. But your Name property in your StyleSheet class is hiding the exact same property in the class that it inherits from (File) - this is causing the serialization error.