using System;

using System.Collections.Generic;

using System.Linq;

using System.Xml.Serialization;

using System.Xml;

using System.Xml.Linq;

using System.IO;

​

    public partial class location

    {

        bool nil;

​

        [XmlAttribute("nil", Namespace = "http://www.w3.org/2001/XMLSchema-instance")]

        public bool Nil { 

            get 

            {

                return nil;

            } 

            set 

            {

                nil = value;

            } 

        }

​

        public bool ShouldSerializeNil() { return nil == true; }

    }

​

    public partial class location

    {

        private string cityField;

​

        private string countryField;

​

        private string stateField;

​

        private string textField;

​

        /// <remarks/>

        [System.Xml.Serialization.XmlAttributeAttribute()]

        public string city

        {

            get

            {

                return this.cityField;

            }

            set

            {

                this.cityField = value;

            }

        }

​

        /// <remarks/>

        [System.Xml.Serialization.XmlAttributeAttribute()]

        public string country

        {

            get

            {

                return this.countryField;

            }

            set

            {

                this.countryField = value;

            }

        }

​

        /// <remarks/>

        [System.Xml.Serialization.XmlAttributeAttribute()]

        public string state

        {

            get

            {

                return this.stateField;

            }

            set

            {

                this.stateField = value;

            }

        }

​

        /// <remarks/>

        [System.Xml.Serialization.XmlTextAttribute()]

        public string Text

        {

            get

            {

                return this.textField;

            }

            set

            {

                this.textField = value;

            }

        }

    }

​

    [System.Xml.Serialization.XmlRootAttribute("locations", Namespace = "")]

    public class LocationList

    {

        [XmlElement("location", IsNullable = false)] // Manually changed to false

        public List<location> Locations { get; set; }

    }

​

    [System.Xml.Serialization.XmlRootAttribute("locations", Namespace = "")]

    public class LocationListLocationsIsNullableTrue

    {

        [XmlElement("location", IsNullable = true)] // When left as true, all xsi:nil="true" entries are deserialized to null

        public List<location> Locations { get; set; }

    }

​

    public static class XmlSerializationHelper

    {

        public static T LoadFromXML<T>(this string xmlString)

        {

            using (StringReader reader = new StringReader(xmlString))

            {

                return (T)new XmlSerializer(typeof(T)).Deserialize(reader);

            }

        }

​

        public static string GetXml<T>(this T obj, 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, IndentChars = "    " }; // For cosmetic purposes.

                using (var xmlWriter = XmlWriter.Create(textWriter, settings))

                    new XmlSerializer(obj.GetType()).Serialize(xmlWriter, obj, ns);

                return textWriter.ToString();

            }

        }

    }

​

    public class Program

    {

        static string GetXml()

        {

            var xml = @"<locations xmlns:xsd=""http://www.w3.org/2001/XMLSchema"" xmlns:xsi = ""http://www.w3.org/2001/XMLSchema-instance"">

    <location country=""PARAGUAY"" city=""Ciudad del Este"" state=""Alto Parana""/>

    <location country=""PARAGUAY"" city=""Ciudad del Este"" state=""Alto Parana""/>

    <location country=""BRAZIL"" city=""Passo Fundo"" state=""Rio Grande do Sul"" xsi:nil=""true""/>

    <location country=""PARAGUAY"" city=""Ciudad del Este"" state=""Alto Parana""/>

    <location country=""BRAZIL"" city=""Passo Fundo"" state=""Rio Grande do Sul"" xsi:nil=""true""/>

    <location country=""PARAGUAY"" city=""Ciudad del Este"" state=""Alto Parana""/>

    <location country=""PARAGUAY"" city=""Ciudad del Este"" state=""Alto Parana""/>

</locations>";

            return xml;

        }

        static void Test<T>(string xml)

        {

            var root = xml.LoadFromXML<T>();

​

            var xml2 = root.GetXml(false);

​

            Console.WriteLine(string.Format("Deserialized and re-serialized {0} XML: ", typeof(T)));

            Console.WriteLine(xml2);

            Console.WriteLine("");

        }

        public static void Main()

        {

            var xml = GetXml();

​

            Console.WriteLine("Original XML: ");

            Console.WriteLine(xml);

            Console.WriteLine("");

​

            Test<LocationList>(xml);

            Test<LocationListLocationsIsNullableTrue>(xml);

        }

    }