[Fork] questions/52108420/remove-arrayof-when-serializing-a-listt

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.IO;
using System.Data;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Binary;
using System.IO.Compression;

//https://stackoverflow.com/questions/52108420/remove-arrayof-when-serializing-a-listt

    public static class XObjectExtensions
    {
        public static XElement SerializeToXElement<T>(this T obj, XContainer parent = null, XmlSerializer serializer = null, XmlSerializerNamespaces ns = null)
        {
			if (obj == null)
				throw new ArgumentNullException();
			// Initially, write to a fresh XDocument to cleanly avoid the exception described in
			// https://stackoverflow.com/questions/19045921/net-xmlserialize-throws-writestartdocument-cannot-be-called-on-writers-created
			var doc = new XDocument();
            using (var writer = doc.CreateWriter())
			{
                (serializer ?? new XmlSerializer(obj.GetType())).Serialize(writer, obj, ns ?? NoStandardXmlNamespaces());
			}
			// Now move to the incoming parent.
			var element = doc.Root;
			if (element != null)
			{
				element.Remove();
				if (parent != null)
				{
					parent.Add(element);
				}
			}
			return element;
        }
		
        public static XmlSerializerNamespaces NoStandardXmlNamespaces()
        {
            var ns = new XmlSerializerNamespaces();
            ns.Add("", ""); // Disable the xmlns:xsi and xmlns:xsd lines.
            return ns;
        }
	}

	public class WikiEntry
	{
		public string Id { get; set; }
		public string Title { get; set; }
		public string Content { get; set; }
		[XmlArray]
		public List<Category> Categories { get; set; }
	}

	public class Category
	{
		[XmlAttribute]
		public string Id { get; set; }
		[XmlAttribute]
		public string Text { get; set; }
	}

    public class TestClass
    {
        public static void Test()
        {
			var initialXml = @"<Wiki>
  <Categories></Categories>
  <Tags></Tags>
  <WikiEntries></WikiEntries>
</Wiki>";
			var xDoc = XDocument.Parse(initialXml);
			
			Test(xDoc);
			Test(xDoc);
        }
		
		static void Test(XDocument xDoc)
		{
			WikiEntry wiki = new WikiEntry
			{
			   Id = Guid.NewGuid().ToString(),
			   Title = "Simple title",
			   Content = "Simple content here",
			   Categories = new List<Category>
				 {
				   new Category
				   {
					 Id = Guid.NewGuid().ToString(),
					 Text = "SCL"
				   },
				   new Category
				   {
					 Id = Guid.NewGuid().ToString(),
					 Text = "KFL"
				   }
				}
			};

			var categories = xDoc.Root.Element("Categories");
			foreach (var category in wiki.Categories)
			{
				category.SerializeToXElement(categories);
			}

			Console.WriteLine(xDoc);
		}
    }

	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;
			}
		}
	}