MCVE questions/50047542/xmlserializer-aborts-reading-after-reader-read

CSharp · Console

/Program.cs

using System;
using System.Collections.Generic;
using System.Text;
using System.Linq;
using System.Xml.Serialization;
using System.Xml;
using System.Xml.Linq;
using System.Xml.Schema;
using System.IO;
using System.Data;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Binary;
using System.IO.Compression;

// https://stackoverflow.com/questions/50047542/xmlserializer-aborts-reading-after-reader-read?noredirect=1#comment87133934_50047542

    public class SerializableClass : IXmlSerializable
    {
        public string Title { get; set; } = "Test title";
        public string Description { get; set; } = "Super description";
        public int Number { get; set; } = (int)(DateTime.Now.Ticks % 99);

        public XmlSchema GetSchema()
        {
            return null;
        }

        public void ReadXml(XmlReader reader)
        {
            reader.Read();
        }

        public void WriteXml(XmlWriter writer)
        {
            writer.WriteStartElement(nameof(this.Title));
            writer.WriteString(this.Title);
            writer.WriteEndElement();

            writer.WriteStartElement(nameof(this.Description));
            writer.WriteString(this.Description);
            writer.WriteEndElement();

            writer.WriteStartElement(nameof(this.Number));
            writer.WriteString(this.Number.ToString());
            writer.WriteEndElement();

        }
    }

    public class MainModel
    {
        public int Count { get => ChildItems.Count; }
        public List<Child> ChildItems { get; set; } = new List<Child>();


        public MainModel(bool createDemoContent) : this()
        {
            if (createDemoContent)
            {
                ChildItems.Add(new Child() { Id = 0, Nickname = DateTime.Now.ToLongDateString() });
                System.Threading.Thread.Sleep(1);
                ChildItems.Add(new Child() { Id = 1, Nickname = DateTime.Now.AddHours(-99).ToLongDateString() });
                System.Threading.Thread.Sleep(1);
                ChildItems.Add(new Child() { Id = 2, Nickname = DateTime.Now.AddDays(-99).ToLongDateString() });
            }
        }

        public MainModel()
        {

        }
    }

    public class Child
    {
        public int Id { get; set; }
        public string Nickname { get; set; }
        public SerializableClass SerializableClass { get; set; } = new SerializableClass();
    }

    public class SubChildren
    {
        public string Title { get; set; }
    }

    public class TestClass
    {
        public static void Test()
        {
			var xml = GetXml();
			
			var mainModel = xml.LoadFromXml<MainModel>();
			
			var xml2 = mainModel.GetXml();
			
			Console.WriteLine("\nOriginal XML: ");
			Console.WriteLine(xml);
			Console.WriteLine("\nDeserialized and re-serialized XML: ");
			Console.WriteLine(xml2);
			
			Assert.IsTrue(XNode.DeepEquals(XElement.Parse(xml), XElement.Parse(xml2)));
        }
		
		static string GetXml()
		{
			var xml = @"<?xml version=""1.0"" encoding=""utf-8""?>
<MainModel  xmlns:xsd=""http://www.w3.org/2001/XMLSchema"" xmlns:xsi=""http://www.w3.org/2001/XMLSchema-instance"">
  <ChildItems>
    <Child>
      <Id>0</Id>
      <Nickname>Freitag, 27. April 2018</Nickname>
      <SerializableClass>
        <Title>Test title 1</Title>
        <Description>Super description 1</Description>
        <Number>53</Number>
      </SerializableClass>
    </Child>
    <Child>
      <Id>1</Id>
      <Nickname>Montag, 23. April 2018</Nickname>
      <SerializableClass>
        <Title>Test title 2</Title>
        <Description>Super description 2</Description>
        <Number>79</Number>
      </SerializableClass>
    </Child>
    <Child>
      <Id>2</Id>
      <Nickname>Donnerstag, 18. Januar 2018</Nickname>
      <SerializableClass>
        <Title>Test title 3</Title>
        <Description>Super description 3</Description>
        <Number>9</Number>
      </SerializableClass>
    </Child>
  </ChildItems>
</MainModel>";
			return xml;
		}
    }

    public static class XmlSerializationHelper
    {
        public static T LoadFromXml<T>(this string xmlString, XmlSerializer serial = null)
        {
            serial = serial ?? new XmlSerializer(typeof(T));
            using (var reader = new StringReader(xmlString))
            {
				return (T)serial.Deserialize(reader);
            }
        }

        public static string GetXml<T>(this T obj, bool omitStandardNamespaces)
        {
			return obj.GetXml(null, omitStandardNamespaces);
        }
		
        public static string GetXml<T>(this T obj, XmlSerializer serializer = null, bool omitStandardNamespaces = false)
        {
            XmlSerializerNamespaces ns = null;
            if (omitStandardNamespaces)
            {
                ns = new XmlSerializerNamespaces();
                ns.Add("", ""); // Disable the xmlns:xsi and xmlns:xsd lines.
            }			
            using (var textWriter = new StringWriter())
            {
                var settings = new XmlWriterSettings() { Indent = true }; // For cosmetic purposes.
                using (var xmlWriter = XmlWriter.Create(textWriter, settings))
                    (serializer ?? new XmlSerializer(obj.GetType())).Serialize(xmlWriter, obj, ns);
                return textWriter.ToString();
            }
        }
    }
				
    public class AssertionFailedException : System.Exception
    {
        public AssertionFailedException() : base() { }

        public AssertionFailedException(string s) : base(s) { }
    }

    public static class Assert
    {
        public static void IsTrue(bool value)
        {
            IsTrue(value, "failed");
        }

        public static void IsTrue(bool value, string message)
        {
            if (value == false)
                throw new AssertionFailedException(message ?? "failed");
        }
    }
						
	public class Program
	{
		public static void Main()
		{
			Console.WriteLine("Roslyn 2.0 Compiler; Environment version: " + Environment.Version);
			Console.WriteLine();

			try
			{
				TestClass.Test();
			}
			catch (Exception ex)
			{
				Console.WriteLine("Uncaught exception: ");
				Console.WriteLine(ex);
				throw;
			}
		}
	}