WPF

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using System;<br />
using System.Collections.Generic;<br />
using System.Linq;<br />
using System.Threading;<br />
using System.ServiceModel;<br />
using System.ServiceModel.Description;<br />
using System.Collections;<br />
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namespace ServerConsole<br />
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{<br />
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    [ServiceContract ]<br />
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    public interface IService1<br />
    {<br />
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        [OperationContract]<br />
        String GetMessage(String name);<br />
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        [OperationContract]<br />
        string GetData(int value);<br />
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    }<br />
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    [ServiceBehavior(InstanceContextMode = InstanceContextMode.Single, ConcurrencyMode = ConcurrencyMode.Single)]<br />
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     //   [ServiceBehavior( InstanceContextMode = InstanceContextMode.Single, ConcurrencyMode = ConcurrencyMode.Multiple)]<br />
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    //[ServiceBehavior(InstanceContextMode = InstanceContextMode.PerSession, ConcurrencyMode = ConcurrencyMode.Single)]<br />
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   // [ServiceBehavior(InstanceContextMode = InstanceContextMode.PerSession, ConcurrencyMode = ConcurrencyMode.Multiple)]<br />
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 // [ServiceBehavior(InstanceContextMode = InstanceContextMode.PerCall, ConcurrencyMode = ConcurrencyMode.Single)]<br />
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    //[ServiceBehavior(InstanceContextMode = InstanceContextMode.PerCall, ConcurrencyMode = ConcurrencyMode.Multiple)]<br />
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    public class Service1 : IService1<br />
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    {<br />
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       //Dictionary<int, string> d = new Dictionary<int, string>();<br />
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       Int32 someNumber;<br />
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        Service1()<br />
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        {<br />
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            Console.WriteLine("{0} : Created new instance ", System.DateTime.Now);<br />
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        }<br />
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        public string GetData(int value)<br />
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        {<br />
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            //Console.WriteLine("{0} : Get data called on thread {1}", System.DateTime.Now, Thread.CurrentThread.ManagedThreadId);<br />
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            someNumber = value;<br />
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            Random rand = new Random();<br />
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            Thread.Sleep(rand.Next(1000));<br />
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            // show the current value of the field and parameter<br />
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            // with percall, they will always be the same<br />
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            Console.WriteLine("parameter = {0}, somenumber = {1}, thread = {2}\n",<br />
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              value.ToString(),<br />
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              someNumber.ToString(),<br />
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              Thread.CurrentThread.ManagedThreadId);<br />
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            return string.Format("You entered: {0}", value);<br />
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           <br />
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        }<br />
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        public String GetMessage(String name)<br />
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        {<br />
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            Console.WriteLine("{0} : Get Message called on thread {1}", System.DateTime.Now, Thread.CurrentThread.ManagedThreadId);<br />
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            return "Hello world from " + name + "!";<br />
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        }<br />
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    }<br />
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    class Program<br />
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    {<br />
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        static void Main(string[] args)<br />
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        {<br />
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            ServiceHost serviceHost = new ServiceHost(typeof(Service1), new Uri("http://localhost:8001/ServerConsole"));<br />
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            serviceHost.AddServiceEndpoint(typeof(IService1), new WSHttpBinding(), "");<br />
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            ServiceMetadataBehavior smb = new ServiceMetadataBehavior();<br />
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            smb.HttpGetEnabled = true;<br />
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            serviceHost.Description.Behaviors.Add(smb);<br />
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            serviceHost.Open();<br />
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            Console.ReadKey();<br />
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            serviceHost.Close();<br />
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        }<br />
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    }<br />
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}<br />
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but through this code i cannot understand properly  the concurrency mode,<br />
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do any one have code to under stand concurrency mode clearly.<br />
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