using System;

using System.Collections.Generic;

using System.Xml.Serialization;

​

public class Program

{

    public static void Main()

    {

        //Console.WriteLine("Hello World");

        List<ListType> list = new List<ListType>();

        list.Add(new ListType{ StringProperty = "hello"} );

        list.Add(new ListType{StringProperty="world"});

        EnvelopDto obj = new EnvelopDto{ ListProperty=list  };

        var settings = new System.Xml.XmlWriterSettings

         {

              Indent = true,

              OmitXmlDeclaration = true

         };

         var ns = new XmlSerializerNamespaces(new[] { System.Xml.XmlQualifiedName.Empty });

    /*

        using(var stringwriter = new System.IO.StringWriter())

        { 

            var serializer = new XmlSerializer(typeof(EnvelopDto));

            serializer.Serialize(stringwriter, obj,ns);

            Console.Write(stringwriter.ToString());

        }

        */

         using (var stream = new System.IO.StringWriter())

     using (var writer = System.Xml.XmlWriter.Create(stream, settings))

     {

         var serializer = new XmlSerializer(typeof(EnvelopDto));

         serializer.Serialize(writer, obj, ns);

             Console.Write(stream.ToString());

     }

    }

}

​

public class ListType

{

    public string StringProperty {get;set;}

}

public class EnvelopDto

{

    public List<ListType> ListProperty{get;set;}

}