ServiceContractAttribute Name and Namespace - The name and namespace are the optional attibutes. Default name is same as the contract type and namespace is http://tempuri.org . It is always recommondable to use Namespace to specify proper namespace which remove the conflict of the datatype/contract. CallbackContract - Return contract in a two-way (duplex) conversation . HasProtectionLevel and ProtectionLevel - Specifies whether all messages supporting the contract have a explicit ProtectionLevel

RESTful WCF Services works by identifing the Resources & Action from Uniform Resource Identifiers (URIs). A RESTful web service is called by a unique URI to refer a resource and HTTP verb is to define actions to the resource. HTTP Method - Verb GET – Fetch PUT – Update/Insert DELETE – Delete POST – Append webHttpBinding is a new WCF binding in Fx 3.5 to develop RESTful services. This does not use SOAP envelopes HTTP and HTTPS Transports. It supports XML, JSON and Binary

The evolution of programming languages have been categorized as 1GL, 2GL, 3GL, 4GL....E.g. Machine Language -> Assembly Language -> C / Fortran -> SQL / Focus 4GL. The evolution of these languages are towards Low level language to High Level language. In 1995, I stated learning computer languages. First I learned C, just after going through Fundamentals of Computer. In my first Academic project using C, I spent lots of time only for writing thousands lines of code. During this period I have

Microsoft’s forthcoming modeling platform is OSLO. More on http://www.microsoft.com/soa/products/oslo.aspx "Oslo" realted Downloads are available here http://msdn.microsoft.com/en-us/oslo/cc748654.aspx "Oslo" SDK download - Download the "Oslo" SDK October 2008 CTP

Download - The Service and Client Application

Windows Communication Foundation (WCF) application is divided two layers namely Services and Clients The WCF services can be exposed in different ways through Web, Windows Service, Self Hosting [Running Console Application]. The Endpoint [Which is having the Address, Binding, Contract(ABC)] is definded to expose service or consume it. In our sample code so far we have developed Console Based application for both Service and Client Applications; then we have deployed the serive in IIS 6.0 in Windows

Now after creating "Hello World" most easy Service we will very happy to see by getting access throug a browser to access WSDL file and can be used in any other application by adding Service Reference. Yes, we can access it just like to .asmx web service through .svc file. To host one service using IIS 6.0 - Windows Server 2003, we have to map .svc file ISAPI extention. Here is the the .SVC, Web.config files to download

This is one of my most interesting eBook which gives the real concepts of SOA. I am here to share this... Click on the book's image to download

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

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