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Hosting WCF Service in Windows Service Managed Environment. Create RESTful WCF Service API: Step By Step Guide. Download source - 9.29 KB Introduction Windows Communication Foundation (WCF) is an SDK for developing and deploying services on Windows. WCF provides a runtime environment for your services, enabling you to expose CLR types as services, and to consume other services as CLR types. In this article, I am going to explain how to implement restful service API using WCF 4.0 . The Created API returns XML and JSON data using WCF attributes. What is REST? Based on the Roy Fielding theory "Representational State Transfer (REST), attempts to codify the architectural style and design constraints that make the Web what it is. Actually only the difference is how clients access our service. REST uses some common HTTP methods to insert/delete/update/retrieve information which is below: Why and Where to Use REST? Few days back, I was writing a service which was supposed to be accessed by heterogeneous language/platform/system. .

Step by Step Guide First of all launch Visual Studio 2010. And that’s it. C# - Client configuration to consume WCF JSON web service. Enumeration Types in Data Contracts. Enumerations can be expressed in the data contract model. This topic walks through several examples that explain the programming model. The following example shows two classes. The first uses the enumeration and the second defines the enumeration. [DataContract] public class Car { [DataMember] public string model; [DataMember] public CarConditionEnum condition; } [DataContract(Name = "CarCondition")] public enum CarConditionEnum { [EnumMember] New, [EnumMember] Used, [EnumMember] Rental, Broken, Stolen } Enumeration Member Values In the preceding example, if condition is set to Used and the data is serialized to XML, the resulting XML is <condition>Used</condition> and not <condition>1</condition>.

[DataContract(Name = "CarCondition")] public enum CarConditionWithNumbers { [EnumMember] New = 10, [EnumMember] Used = 20, [EnumMember] Rental = 30, } For example, you can use CarConditionEnum on the sending side and CarConditionWithNumbers on the receiving side. There are two exceptions to this: Creating a REST JSON WCF Service with C# .NET. | Hopefully Informative Hints | Mike J McGuire. “Boring conversation anyway.” – Han Solo. Ok, I think this post possibly has too many acronyms in the title. This post is about creating a WCF service that can be consumed by a client using the REST (representational state transfer) architectural style, and using JSON (JavaScript Object Notation) for data transfer. Why would we do this? Partly, and I can’t stress this one enough, it’s actually loads of fun… Additionally, with XML no longer being flavour of the month, JSON has become much more popular for transferring data in this situation.

I needed to determine how to do this recently to enable an existing application system on Linux that uses REST/JSON to access a WCF service without asking them to convert to SOAP/XML. I’ve created a couple of posts already describing how to use WCF in C#/.NET. It’s actually quite a simple change. Here’s the response data type. Here’s the “before” interface.The WCF calls for this service would have used SOAP/XML. Super cool. Enjoy. ~ Mike Like this: How to create a JSON WCF RESTful Service in 60 seconds. Download source code - 4.14 KB WCF makes it very easy to expose JSON data over a RESTful interface, as long as you are aware of a couple of “gotchas” in advance.

This article will explain those to you, so you can focus on your business logic rather than configuration of your WCF services. We start this example by creating a WCF Service Library project: Next we need to add a reference to the System.ServiceModel.Web framework. Right click on your project file and select Add Reference… As this framework is not part of the .Net Framework 4 Client Profile, Visual Studio kindly informs us that it will update our target Framework to the full version of .Net Framework 4.

We are now ready to update our code. Copy and paste the following code into the App.Config file: Hide Copy Code Notice the binding is set to webHttpBinding as opposed to the normal project template default of wsHttpBinding. The other important change is the addition of an endpointBehavior for WebHttp. REST / SOAP endpoints for a WCF service. WCF the Manual Way… the Right Way. Visual Studio 2008 as well as the .NET 3.0 extensions for Visual Studio 2005 add several new templates that allow you to quickly create .NET 3.0 items such as WPF forms, Workflows, and WCF services.

We’ve used templates such as these since the beginning of time to create traditional application elements such as Windows Forms, Web Forms, and User Controls, so you would think that these are equally great; or would you? Unfortunately, creating WCF projects or project items come with more baggage than you can imagine. They also don’t exactly promote the best practices I feel should be considered when designing WCF services. So if you don’t use the built-in templates to create your services, what do you use?

Sometimes, when tools do a lot of work for you, the results may not exactly be the best. Another area where I see developers doing things automatically and falling a bit short is in referencing services from client application. So what Exactly Is Wrong? The "Before" Consuming the Service. Define a Windows Communication Foundation Service Contract. Implementing a WCF Service in the Real World. (Read more interesting articles on WCF 4.0 here.) An important aspect of SOA design is that service boundaries should be explicit, which means hiding all the details of the implementation behind the service boundary.

This includes revealing or dictating what particular technology was used. Furthermore, inside the implementation of a service, the code responsible for the data manipulation should be separated from the code responsible for the business logic. So in the real world, it is always good practice to implement a WCF service in three or more layers. The three layers are the service interface layer, the business logic layer, and the data access layer. Service interface layer: This layer will include the service contracts and operation contracts that are used to define the service interfaces that will be exposed at the service boundary. The service interface layer will be compiled into a separate class assembly and hosted in a service host environment. Creating the service interfaces. WCF for the Real World, Not Hello World | Web and Life. It is assumed that you have created a few commercial WCF projects.

If not, it is recommended that you create a few Hello World projects for getting hand-on experience in WCF. There are tons of tutorials in the Internet for creating a Hello World WCF project, like Implementing a Hello World WCF Project, and Implementing a WCF Service in the Real World. This article is to demonstrate how to manage WCF service development in enterprise environment through team works. You know how good WCF is, and how convenient building Web services using the “WCF Service Application” template is. With simply a few mouse clicks, the VS IDE creates a set of skeleton codes for you so you could rush to coding business features right away, as illustrated in the following screenshots you are already familiar with. For small projects,say less than 2000 lines in the WCF modules, the template has provided a decent RAD support. Interface design Implementation Testing Configuration Client programming Steps: Hints: Getting Started Tutorial. The topics contained in this section are intended to give you quick exposure to the Windows Communication Foundation (WCF) programming experience.

They are designed to be completed in the order of the list at the bottom of this topic. Working through this tutorial gives you an introductory understanding of the steps required to create WCF service and client applications. A service exposes one or more endpoints, each of which exposes one or more service operations. The endpoint of a service specifies an address where the service can be found, a binding that contains the information that describes how a client must communicate with the service, and a contract that defines the functionality provided by the service to its clients.

All of the topics in this section assume you are using Visual Studio 2011 as the development environment. WCF tutorial. A Beginner's Tutorial for Understanding Windows Communication Foundation (WCF) Download source - 144 KB Introduction This article is an introduction to the Windows Communication Foundation (WCF). We will try to see the basic concepts behind WCF and will try to implement a small WCF service.

We will also work out some small examples of how a WCF service can be consumed. Background Like I said in my earlier article on Web Services, communication between applications is very important. Windows Communication Foundation (WCF) comes to the rescue when we find ourselves not able to achieve what we want to achieve using web services, i.e., other protocols support and even duplex communication. The following table illustrates the differences between a web service and a WCF service: Note: Apart from these differences, there are other differences related to instance management, sessions, and data representation and serialization.

A WCF service can be visualized as: Understanding the basics Where is the WCF service located from a client's perspective? Using the code Hide Copy Code. 1. What is REST? REST stands for Representational State Transfer. (It is sometimes spelled "ReST".) It relies on a stateless, client-server, cacheable communications protocol -- and in virtually all cases, the HTTP protocol is used. REST is an architecture style for designing networked applications. The idea is that, rather than using complex mechanisms such as CORBA, RPC or SOAP to connect between machines, simple HTTP is used to make calls between machines. In many ways, the World Wide Web itself, based on HTTP, can be viewed as a REST-based architecture. RESTful applications use HTTP requests to post data (create and/or update), read data (e.g., make queries), and delete data. REST is a lightweight alternative to mechanisms like RPC (Remote Procedure Calls) and Web Services (SOAP, WSDL, et al.).

Despite being simple, REST is fully-featured; there's basically nothing you can do in Web Services that can't be done with a RESTful architecture. REST is not a "standard".