The metadata is to describe how to interact with the service's endpoints. We could generate Proxy class for the Client as well as it updates the .config files[App.config/Web.config] for the Client Application.
For example Svcutil.exe could automatically generated client code for accessing the service..
Trough Visual Studio 2008/2005 with WCF extension, we can "Add Service Reference" which does the entire necessary task for us.

For is purpose it is the following code added to the Service Code.

using System.ServiceModel.Description;

ServiceMetadataBehavior svcMetaBehav = new ServiceMetadataBehavior();
svcMetaBehav.HttpGetEnabled = true;
svcHost.Description.Behaviors.Add(svcMetaBehav);

The WSDL of this service looks like as following:
  

Step 5. Create New Console Project for creating Client Application the Service - Start running the Service when you generate the Proxy of the Service

5.1- Added Service Reference of the created Service

5.2- Created Proxy Class of the created Service - In service explorer click on show all files then a set of files will be showing which are auto generated, the proxy class file is here Reference.cs

 5.3 This also generates the service binding details in App.config file

 5.3 Auto generated Binding Details of the service in App.config file

    <bindings>

      <basicHttpBinding>

        <binding name="BasicHttpBinding_IMyFirstService" closeTimeout="00:01:00"

          openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"

          allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard"

          maxBufferSize="65536" maxBufferPoolSize="524288" maxReceivedMessageSize="65536"

          messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered"

          useDefaultWebProxy="true">

          <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384"

            maxBytesPerRead="4096" maxNameTableCharCount="16384" />

          <security mode="None">

            <transport clientCredentialType="None" proxyCredentialType="None"

              realm="" />

            <message clientCredentialType="UserName" algorithmSuite="Default" />

          </security>

        </binding>

      </basicHttpBinding>

    </bindings>

5.3 Auto generated End Point of the service in App.config file

    <client>

      <endpoint address="http://abu:8080/WCFKolkataNET/HOL/MyService" binding="basicHttpBinding"

        bindingConfiguration="BasicHttpBinding_IMyFirstService" contract="MyFirstServiceClient.IMyFirstService"

        name="BasicHttpBinding_IMyFirstService" />

    </client>

5.4 Code in Prorgarm.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Runtime.Serialization;

using System.ServiceModel;

namespace KolkataNETWCFHelloWorld

{

    class Program

    {

        static void Main(string[] args)

        {

            EndpointAddress endPointAddr = new EndpointAddress("http://abu:8080/WCFKolkataNET/HOL/MyService");

            MyFirstServiceClient clientProxy = new MyFirstServiceClient(new BasicHttpBinding(), endPointAddr);

            string strResponse = clientProxy.MyFirstMethod();

            Console.WriteLine(string.Format("Response from MyFirstService: {0}", strResponse));

            Console.WriteLine();

            Console.ReadLine();

        }

    }

}

 Run the Client Application

Step 1. Created one Console Project

Step 2. Created one Project in the same Solution IMyFirstService.csproj for declaring/designing Service contact

2.1- Added reference to System.ServiceModel

using System;

using System.Runtime.Serialization;

using System.ServiceModel;

namespace KolkataNETWCFHelloWorld

{

    [ServiceContract(Namespace="http://KolkataNET.WCF.HOL")]

    public interface IMyFirstService

    {

        [OperationContract]

        string MyFirstMethod();

    }

}

2.2 Design Simple Service Contract with one

    [ServiceContract(Namespace="http://KolkataNET.WCF.HOL")]

    public interface IMyFirstService

2.3 Design Simple Operation [Method/Function] using Attribute [OperationContract] by declaring the method name MyFirstMethod

Step 3. Created one Project in the same Solution MyFirstService.csproj for declaring/designing Service

3.1- Added reference to System.ServiceModel

using System;

using System.Runtime.Serialization;

using System.ServiceModel;

namespace KolkataNETWCFHelloWorld

{

    public class MyFirstService : IMyFirstService

    {

        public string MyFirstMethod()

        {

            return string.Format("Hello World. Welcome KolkataNET!!!");

        }

    }

}

3.2 Design Simple Service implementing the above service Contract

    public class MyFirstService : IMyFirstService

3.3 Design Simple Operation [Method/Function]

    public class MyFirstService : IMyFirstService

    {

        public string MyFirstMethod()

        {

            return string.Format("Hello World. Welcome KolkataNET!!!");

        }

    }

4.1- Added reference to System.ServiceModel - For hosting the service and exposing MEX - Metadata Exchange of the Service

using System;

using System.Runtime.Serialization;

using System.ServiceModel;

using System.ServiceModel.Description;

namespace KolkataNETWCFHelloWorld

{

    class Program

    {

        static void Main(string[] args)

        {

            Uri svcBaseAddress = new Uri("http://abu:8080/WCFKolkataNET/HOL");

            ServiceHost svcHost = new ServiceHost(typeof(MyFirstService), svcBaseAddress);

            svcHost.AddServiceEndpoint(

                               typeof(IMyFirstService),

                               new BasicHttpBinding(),

                               "MyService");

            ServiceMetadataBehavior svcMetaBehav = new ServiceMetadataBehavior();

            svcMetaBehav.HttpGetEnabled = true;

            svcHost.Description.Behaviors.Add(svcMetaBehav);

            svcHost.Open();

            Console.WriteLine("<ENTER> to stop the service - MyFirstService");

            Console.WriteLine();

            Console.ReadLine();

            svcHost.Close();

        }

    }

}

4.2 Defining Base Address to host the Service

Uri svcBaseAddress = new Uri("http://abu:8080/WCFKolkataNET/HOL");

            ServiceHost svcHost = new ServiceHost(typeof(MyFirstService), svcBaseAddress);

            svcHost.AddServiceEndpoint(

                               typeof(IMyFirstService),

                               new BasicHttpBinding(),

                               "MyService");

4.3 Allowing to expose MEX of the Service

            ServiceMetadataBehavior svcMetaBehav = new ServiceMetadataBehavior();

            svcMetaBehav.HttpGetEnabled = true;

            svcHost.Description.Behaviors.Add(svcMetaBehav);

4.3 Running the service until <ENTER> key has been pressed

svcHost.Open();

4.4 Closing the service when <ENTER> key has been pressed

svcHost.Close();

Here is the code...

Click to Download

This is my first post for WCF HOL. I will be posting series of Lab Sessions with code and explanations for the whole series. I have noticed in one UG Session people who don't have any WCF backround but who are familiars of ASP.NET/.NET for them this series will be useful as a tutorial with practical.

Step by step I will be covering all the possible aspects of WCF. Same time I will be covering the SOA / Service based real life application scope especially for Connected and Distributed systems.

Please note that in the sample application every where I have used abu - which is my machine name, now for your case this will be your machine name

In Service Code
Uri svcBaseAddress = new Uri(http://abu:8080/WCFKolkataNET/HOL); // Change "abu" by your machine name

In Client Code
EndpointAddress endPointAddr = new EndpointAddress(http://abu:8080/WCFKolkataNET/HOL/MyService); // Change "abu" by your machine name

This series of Webcast includes A2Z[complete] ASP.NET AJAX Client Libraries - calling Web services, object-oriented development, creating controls, creating behaviors, and tips and tricks for development

WCF Services from ASP.NET AJAX

• MSDN WEBCAST: CALLING WINDOWS COMMUNICATION FOUNDATION SERVICES WITH ASP.NET AJAX CLIENT LIBRARIES (PART 1 OF 2)
• MSDN WEBCAST: CALLING WINDOWS COMMUNICATION FOUNDATION SERVICES WITH ASP.NET AJAX CLIENT LIBRARIES (PART 2 OF 2) (LEVEL 200)

ASP.NET AJAX Client Library

• MSDN Webcast: ASP.NET AJAX Client Libraries: Overview
• MSDN Webcast: ASP.NET AJAX Client Libraries: Calling Web Services
• MSDN Webcast: ASP.NET AJAX Client Libraries: Object-Oriented Development
• MSDN Webcast: ASP.NET AJAX Client Libraries: Creating Controls
• MSDN Webcast: ASP.NET AJAX Client Libraries: Creating Behaviors and Extenders
• MSDN Webcast: ASP.NET AJAX Client Libraries: Development Tips and Tricks
• MSDN Webcast: ASP.NET AJAX Client Libraries: Session Review
• MSDN Webcast: Events in the ASP.NET AJAX Client Libraries
• MSDN Webcast: Services in ASP.NET AJAX Client Libraries
• MSDN Webcast: Security in ASP.NET AJAX Client Applications

The series blog post on REST in WCF

One of my interesting thing is "URL Rewriting". The first time I have implemented it through implementing HTTPHandler using .NET 1.1. Same concept I have applied to a Document Management Service [DMS] project to PUT the document and GET the document by an .ASMX WebService. There I added verb * using wild charater in IIS 6.0 as well as added  <httpHandler> node in web.config. Then we got in different way in .NET 2.0. Finally this time we got using URITemplate, WebGet, WebInvoke in WCF 3.5 SP1.

The UriTemplate class provides methods for working with sets of URIs that share a common structure for URL Rewriting.
As this follows based on the URL pattern comprises left portion of URI which is fixed and rest is dynamic where certain parameter is getting manipulated or changed to request a page. System.UriTemplate provides runtime support for URI template syntax.
UriTemplate is to manipulate parameters using ByName and ByPosition.
[WebGet] - supports HTTP GET method
WebOperationContext provides easy access to Web specifics (e.g., headers, status codes)
[WebInvoke] supports other HTTP methods; POST is default method

http://blogs.msdn.com/endpoint/archive/2008/08/22/rest-in-wcf-part-ix-controlling-the-uri.aspx

http://weblogs.asp.net/jgalloway/archive/2007/05/02/mix07-wcf-adding-system-uritemplate-webget-and-webinvoke.aspx

Corresponding to previous version's URL concept the available resources are in

http://msdn.microsoft.com/en-us/library/ms972974.aspx

http://weblogs.asp.net/scottgu/archive/2007/02/26/tip-trick-url-rewriting-with-asp-net.aspx

http://www.simple-talk.com/dotnet/asp.net/a-complete-url-rewriting-solution-for-asp.net-2.0/

So nicely step by step blogged by Eric Lippert for "Covariance and Contravariance" as "Fabulous Adventures In Coding"

Very good resources for the coming version...

Sam Ng

• Dynamic in C# Part One
• Dynamic in C# Part Two

Chris Burrows

• C# Dynamic Part I
• C# Dynamic Part II
• C# Dynamic Part III

Eric Lippert

• The Future of C# Part One
• The Future of C# Part Two
• The Future of C# Part Three
• The Future of C# Part Four

PDC

• TL16: The Future of C#
  • Anders Hejlsberg
• TL10: Deep Dive: Dynamic Languages in .NET
  • Speaker: Jim Hugunin
• TL11: An Introduction to Microsoft F#
  • Speaker: Luca Bolognese
• TL12: Future Directions for Microsoft Visual Basic
  • Speaker: Paul Vick and Lucian Wischik
• TL44 IronRuby: The Right Language for the Right Job
  • Speaker: John Lam
• TL46: Microsoft Visual C# IDE: Tips and Tricks
  • Dustin Campbell
• TL54: Natural Interop with Silverlight, Office and Python
  • Alex Turner
• TL57: A Panel on the Future of Programming Languages
  • G. Bracha, D.Crockford, A. Hejlsberg, E. Meijer, W.Schulte, J. Siek

"What's Next?" - Everybody is interested to know about new and upcoming things. While I purchase new thing, I could not wait to use. Previously I was curious to know abour Whidbey, Orcas, WinFx ( Indigo, Avalon)... Next???

Now it is the case for Oslo too.

Now after PDC 2008, may many of us come to know about Visual Studio 2010.

 "10" - this one very significant number for football player or hockey player; only the most important player are getting No. 10 as their jersey number.

Yes, this time, it is "10" - Visual Studio 2010, VB.NET 10, Visual Studio 10 is the NEXT.

Here are some very useful links related to this.

http://blogs.msdn.com/kirillosenkov/archive/2008/11/20/links-about-visual-studio-2010-and-c-4-0.aspx

http://weblogs.asp.net/pgielens/archive/2008/10/27/the-future-of-c-4-0.aspx

http://code.msdn.microsoft.com/csharpfuture

http://code.msdn.microsoft.com/csharpfuture/Wiki/View.aspx?title=Home&version=4

 http://blogs.msdn.com/bclteam/archive/2008/11/04/what-s-new-in-the-bcl-in-net-4-0-justin-van-patten.aspx

C# Language Enhancement

C# 3,0 LINQ

C# 3.0 and LINQ With Language Extention

C# Dynamic Language Enhancement

C# 4.0 can be found on the Downloads page. The CSharpDynamic samples include several projects showing how to use Dynamic with Office, IronPython and other technologies. There is also a covariance and contravariance example, and an example show how to use the new IDynamicObject interface to create native C# objects that can be called dynamically.

The document New Features in C# 4.0 is a high level description of the additions to the C# language, and the samples are designed to show off the new language features, particularly around the dynamic scenario.

Application Architecture Pocket Guides http://blogs.msdn.com/jmeier/archive/tags/AppArch/default.aspx

• Web Application Architecture Pocket Guide
• Mobile Application Architecture Pocket Guide
• RIA Architecture Pocket Guide
• Rich Client Application Architecture Pocket Guide
• Service Architecture Pocket Guide
• Application Architecture Visios Now Available
• Agile Architecture Method Pocket Guide

In my free time I like to see videos from Channel9, TechEd and PDC sessions.

Guide and Self Learning Resources are avilable @

NetFxGuide

http://www.netfxguide.com/guide/wcf.aspx

http://www.netfxguide.com/guide/WPF.aspx

http://www.netfxguide.com/guide/WF.aspx

channel9

http://channel9.msdn.com/tags/WCF/

 http://channel9.msdn.com/tags/WF/

http://channel9.msdn.com/tags/WPF/

A bird’s-eye view from 1000 feet in MSDN... Conceptual diagram whitch cover A2Z Basic Key Words associated with WCF.
http://msdn.microsoft.com/en-us/library/ms733128.aspx

WCF Architecture Digram

 

http://msdn.microsoft.com/en-us/library/aa480210.aspx

A Developer's Primer from Code Project
http://www.devx.com/codemag/Article/31674/0/page/1

http://www.microsoft.com/learning/mcp/mcts/vstudio/2008/default.mspx

MCTS certifications

Preparation Guide for Exam 70-503 - eLearining

TS: Microsoft .NET Framework 3.5 – Windows Communication Foundation Application Development

http://www.microsoft.com/learning/en/us/exams/70-503.mspx

All the papers details...

If you are an ASP.NET, WCF advanced serious developer, would like to play with internals of ASP.NET, Web Service, WCH hosting with IIS 7.0; this this article will be very useful to know it's architecture.

http://learn.iis.net/page.aspx/101/introduction-to-iis7-architecture/

Message-Oriented Web Services
Author Dr. Jim Webber,Service-Oriented Systems Practice Lead, ThoughtWorks

www.acs.org.au/nsw/sigs/ws/presentations/2006-11/Message-OrientedWebServices.ppt

This PPT is very much informative and conceptual; specially for those who is trying to build the concept of SOA/Web Service/WCF, messaging service. Here fundamentals are covered.

A Lap around Windows Communications Foundation
http://download.microsoft.com/download/c/d/5/cd57f3cb-de13-46b0-a526-e1781eea5ecd/ALapAroundtheWCF.ppt

Windows Communication Foundation (Indigo) Hello World Tutorial
http://dotnet.org.za/hiltong/articles/52518.aspx

Windows Communication Foundation Tutorial - Part 2 (DataContract vs Serializable)
http://dotnet.org.za/hiltong/articles/50121.aspx

Windows Communication Foundation Tutorial - Part 3 - Messaging & MessageContracts
http://dotnet.org.za/hiltong/articles/53552.aspx

In the last posted some links related to concept and fundamentals of WCF. It basics of WCF, Contracts[Service, Operational, Data, Message].

A service can be hosted by Internet Information Services (IIS), Windows Process Activation Service (WAS), a Windows service, or by a managed application.

For the hosting model to include Windows Services and Self-Hosting options this is one of the best articles from MSDN http://msdn.microsoft.com/en-us/library/bb332338.aspx

What I feel that here in WCF as many as options are available for hosting. Based on the requirement and available platform the option need be choose. Therefore, it's always require to all the available optios and it's advantages and disadvantages to optimize the same.

This articles covers all the poosible way (intermediate level) for Hosting WCF Services http://www.devx.com/codemag/Article/33655

From MSDN...

Hosting in Internet Information Services
Hosting in Windows Process Activation Service
Hosting in a Windows Service Application
Hosting in a Managed Application

To create robust distributed service with WCF it is very essential to understand WS-* specifications.

List of Web service specifications - http://en.wikipedia.org/wiki/List_of_Web_service_specifications

In .NET this supports as Web Services Enhancements (WSE). http://en.wikipedia.org/wiki/Web_Services_Enhancements

The Web Service Specifications is to provide interoperable protocols for Security, Reliable Messaging, and Transactions http://msdn.microsoft.com/en-us/library/ms951274.aspx

Windows Communication Foundation (WCF) implements a number of Web services protocols. http://msdn.microsoft.com/en-us/library/ms734776.aspx

The article for WCF implementation of the WS-ReliableMessaging http://msdn.microsoft.com/en-us/library/aa480191.aspx is very nice.

Here is wellorganized list of all keynotes and sessions by code and title....

http://blogs.msdn.com/mswanson/pages/PDC2008Sessions.aspx

From this all the session can be downloaded, available presentation slides and sample code, if applicable.