Styjun

Since XmlSerializer can not serialize any other properties when the class is inherited from List <>, I try to solve them with the DataContractSerializer. This should work, as described here: When a class is inherited from List<>, XmlSerializer doesn't serialize other attributes

But I get the same results. If the object is inherited from List <> the TestValue property is not serialized.

using System.Runtime.Serialization;

[Serializable]
public class XSerBase 

 [DataMember]
 public XSerTest XSerTest get; set; = new XSerTest();


[Serializable]
public class XSerTest : List<string>

 [DataMember]
 public string TestValue get; set; 


// my serialize / deserialize example

 XSerBase objectSource = new XSerBase();
 objectSource.XSerTest.TestValue = "QWERT";

 MemoryStream mem = new MemoryStream();
 DataContractSerializer dcsSource = new DataContractSerializer(typeof(XSerBase));
 dcsSource.WriteObject(mem, objectSource);
 mem.Position = 0;

 XSerBase objectDestination = null;
 DataContractSerializer dcsDestination = new DataContractSerializer(typeof(XSerBase));
 objectDestination = (dcsDestination.ReadObject(mem) as XSerBase);

 // objectDestination.XSerTest.TestValue is null
 // objectDestination.XSerTest.TestValue is "QWERT", when XSerTest is not inherited from List<string>

Am I missing an attribute?

I tried to get an inherited class List to work and was not successful. This is the best I could do

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Globalization;
using System.Xml;
using System.Xml.Serialization;

namespace ConsoleApplication106


 class Program
 
 const string FILENAME = @"c:temptest.xml";
 static void Main(string[] args)
 
 XSerBase test = new XSerBase()
 
 XSerTest = new List<XSerTest>() 
 new XSerTest() TestValue = "123",
 new XSerTest() TestValue = "456"
 
 ;


 XmlSerializer serializer = new XmlSerializer(typeof(XSerBase));

 XmlWriterSettings settings = new XmlWriterSettings();
 settings.Indent = true;
 XmlWriter writer = XmlWriter.Create(FILENAME,settings);

 serializer.Serialize(writer, test);

 writer.Flush();
 writer.Close();

 

 
 public class XSerBase
 
 [XmlElement("XSerTest")]
 public List<XSerTest> XSerTest get; set; 
 
 public class XSerTest
 
 public string TestValue get; set;