Visual studio 2012 wcf data service template

This creates a working service that can be tested and accessed. The following two steps demonstrate how you might modify the default method to use a different data type. In a real application, you would also add your own functions to the service.

In Solution Explorer , double-click IService1. These attributes are required for any method exposed by the service. In Solution Explorer , double-click Service1. Press F5 to run the service. The GetData tab appears. In the Request box, select the Value field and type Hello. Click the Invoke button. If a Security Warning dialog box appears, click OK. For more information on these types of workflow, see How to: Create a Workflow.

For more information about creating workflow projects, see Creating Legacy Workflow Projects. Visual Studio designer is more responsive when XOML type workflows are used instead of code based ones.

XOML workflow is the default workflow type to be created. For more information, see WCF Syndication. The syndication template uses Internet Explorer during execution. When you right-click your project in Solutions Explorer in Visual Studio, select Properties , then select the Debug tab and you can see the default address of the template.

Internet Explorer attempts to open the feed at this address. If you change the address of your feed, you must also change the address in the Debug tab. If you do not do this, Internet Explorer attempts to open the feed at the default address and fail.

This template creates a Web service that provides data to a Silverlight client or front-end. The template can be added to a Web site or Web application project to create a WCF service, which includes service code and configuration that support communicating with a Silverlight client.

You define functions or methods that are exposed by a WCF service by marking them with a OperationContractAttribute attribute. In addition, you can expose serialized data by marking a composite type with a DataContractAttribute attribute.

This enables data binding in a client. After an interface and its methods are defined, they are encapsulated in a class that implements the interface. A single WCF service class can implement multiple service contracts. A WCF service is exposed for consumption through what is known as an endpoint. The endpoint provides the only way to communicate with the service; you cannot access the service through a direct reference as you would with other classes.

An endpoint consists of an address, a binding, and a contract. A binding defines the way that you communicate with the service. A contract includes the operations that are exposed by the WCF service class. Multiple endpoints can be exposed for a single WCF service. This enables different clients to communicate with the same service in different ways. A WCF client consists of a proxy that enables an application to communicate with a WCF service, and an endpoint that matches an endpoint defined for the service.

The proxy is generated on the client side in the app. For services that expose multiple endpoints, the client can select the one that best fits its needs, for example, to communicate over HTTP and use Windows Authentication. After a WCF client has been created, you reference the service in your code just as you would any other object.

For example, to call the GetData method shown earlier, you would write code that resembles the following:. These tools together provide a fast and convenient debug and testing cycle, and eliminate the requirement to commit to a hosting model at an early stage.

WCF Visual Studio templates provide a basic class structure for service development. When you select a template, files are added for a service contract, a service implementation, and a service configuration. All necessary attributes are already added, creating a simple "Hello World" type of service, and you did not have to write any code. You will, of course, want to add code to provide functions and methods for your real world service, but the templates provide the basic foundation.

WCF Service Host enumerates the services in a WCF service project, loads the project's configuration, and instantiates a host for each service that it finds. You can test the parameters and start the service, and repeat this process to continuously test and validate your service.

Visual Studio simplifies the task of creating WCF clients, automatically generating a proxy and an endpoint for services that you add by using the Add Service Reference dialog box.

All necessary configuration information is added to the app. Most of the time, all that you have to do is instantiate the service in order to use it. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Podcast Making Agile work for data science. Stack Gives Back Featured on Meta. New post summary designs on greatest hits now, everywhere else eventually. Related Hot Network Questions.