using System.Runtime.Serialization;
using System.ServiceModel;

namespace Server.Service
{
    #region ComplexData
    [DataContract]
    public class ComplexData
    {
        #region Constructor's

        public ComplexData(string strValue, int intValue)
        {
            StrValue = strValue;
            IntValue = intValue;
        }

        #endregion

        #region StrValue

        [DataMember]
        public string StrValue
        {
            get;
            set;
        }

        #endregion

        #region IntValue

        [DataMember]
        public int IntValue
        {
            get;
            set;
        }

        #endregion
    }

    #endregion

    #region IService

    [ServiceContract]
    public interface IService
    {
        [OperationContract]
        string GetStrValue(int intVal);

        [OperationContract]
        ComplexData GetComplexData(int intVal);
    }    #endregion

    #region ServiceImpl

    class ServiceImpl: IService
    {
        public string GetStrValue(int intVal)
        {
            return intVal.ToString();
        }

        public ComplexData GetComplexData(int intVal)
        {
            return new ComplexData( intVal.ToString(), intVal );
        }
    }

    #endregion
}

using System;
using System.ServiceModel;
using System.ServiceModel.Description;
using Server.Service;

namespace Server
{
    class Program
    {
        static void Main(string[] args)
        {
            Uri baseAddress = new Uri("http://localhost:8000/Service");

            var host = new ServiceHost(typeof(ServiceImpl), baseAddress);
            using(host)
            {
                ServiceMetadataBehavior smb = new ServiceMetadataBehavior();
                smb.HttpGetEnabled = true;
                host.Description.Behaviors.Add(smb);

                var httpEndPointAdress = baseAddress + "/http";
                var httpEndPoint = host.AddServiceEndpoint(typeof(IService), new BasicHttpBinding(), httpEndPointAdress);

                host.Open();

                Console.WriteLine("Host started.");
                Console.WriteLine("Press any key...");
                Console.ReadKey( true );

                host.Close();
            }
        }
    }
}