using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Xml.Serialization;

using System.Xml;

using System.IO;

using System.Diagnostics;

using System.Collections.ObjectModel;

using System.Threading;

using System.ComponentModel;

using System.Xml.Linq;

using System.Reflection;

using System.Data;

using System.Xml.Schema;

using System.Text.RegularExpressions;

using System.Net;

using System.Xml.XPath;

using System.Globalization;

using System.ComponentModel.DataAnnotations;

using System.Collections;

using System.Runtime.InteropServices;

using System.Runtime.Serialization;

​

using xmls = System.Xml.Serialization;

​

    // https://stackoverflow.com/questions/47119999/constructor-of-a-xmlserializer-serializing-a-listt-throws-an-invalidoperatione

​

​

    [XmlRoot(ElementName = "TextureParameter")]

    public class TextureParameter

    {

        [XmlAttribute(AttributeName = "pname")]

        public string Pname { get; set; }

        [XmlAttribute(AttributeName = "value")]

        public string Value { get; set; }

    }

​

    //[XmlArray("texparams")] -- uncomment and compilation will fail

    //[XmlArrayItem("texparam")]  -- uncomment and compilation will fail

    public class TextureParameterList : List<TextureParameter>

    {

    }

​

    class TestClass

    {

        public static void Test()

        {

            var list = new List<TextureParameter>

            {

                new TextureParameter { Pname = "TextureMinFilter", Value = "9729" },

                new TextureParameter { Pname = "TextureMagFilter", Value = "9728" },

            };

            var serializer = MakeListSerializer<TextureParameter>("texparams", "texparam");

​

            var xml = list.GetXml(serializer, true);

​

            Console.WriteLine("Result of serializing {0} with the custom {1}:", list, serializer);

            Console.WriteLine(xml);

        }

​

        static XmlSerializer MakeListSerializer<T>(string rootName, string elementName)

        {

            xmls.XmlAttributeOverrides attributeOverrides = new xmls.XmlAttributeOverrides();

            attributeOverrides.Add(typeof(List<T>), new xmls.XmlAttributes()

            {

                XmlRoot = new xmls.XmlRootAttribute(rootName),

            });

            attributeOverrides.Add(typeof(T), new xmls.XmlAttributes()

            {

                XmlType = new xmls.XmlTypeAttribute(elementName),

            });

​

            return new XmlSerializer(typeof(List<T>), attributeOverrides);

        }

    }

    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 static class XmlSerializationHelper

    {

        public static T LoadFromXml<T>(this string xmlString, XmlSerializer serial = null)

        {

            serial = serial ?? new XmlSerializer(typeof(T));

            T returnValue = default(T);

            using (StringReader reader = new StringReader(xmlString))

            {

                object result = serial.Deserialize(reader);

                if (result is T)

                {

                    returnValue = (T)result;

                }

            }

            return returnValue;

        }

​

        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 Program

    {

        public static void Main()

        {

            Console.WriteLine("Environment version: " + Environment.Version);

            Console.WriteLine();

​

            TestClass.Test();

        }

    }

​