NET Web services are compiled into a class library assembly. A file called the service file is provided that has the extension. The service file is copied into an ASP. The application is then accessible by using the uniform resource locator URL of the service file in the application root.
NET application. To host a service in IIS 5. Create a service file with a. To host a WCF service within a. NET application, compile the service type into a class library assembly referenced by the application, and program the application to host the service using the ServiceHost class.
The following is an example of the basic programming required:. This example shows how addresses for one or more transport protocols are specified in the construction of a ServiceHost. These addresses are referred to as base addresses.
The host can have one base address for each communication transport protocol. NET compatibility mode option. Turning that option on requires the following steps. NET compatibility mode is either allowed or required. WCF applications can also be configured to use. That option can save you from having to modify clients that are configured to use the URLs of. Clients for ASP. It generates a code module with the definition of the service contract and the definition of a WCF client class.
It also generates a configuration file with the address and binding of the service. In programming a client of a remote service it is generally advisable to program according to an asynchronous pattern. The code generated by the WSDL. It provides for the synchronous pattern by default. In particular, the names of the properties of classes that have to be serialized using the XmlSerializer are, by default, given the suffix Property in the code generated by the Svcutil. NET Web services can be customized.
A class is derived from SoapHeader to define the structure of the header, and then the SoapHeaderAttribute is used to indicate the presence of the header. This syntax yields an explicit representation of the structure of the messages, whereas the structure of messages is implied by the code of an ASP. NET Web service. Also, in the ASP. NET syntax, message headers are represented as properties of the service, such as the ProtocolHeader property in the previous example, whereas in WCF syntax, they are more accurately represented as properties of messages.
Also, WCF allows message headers to be added to the configuration of endpoints. That option allows you to avoid any reference to infrastructural protocol headers in the code for a client or service: the headers are added to messages because of how the endpoint is configured.
It returns that WSDL as the response to the request. NET generates for a service can be customized. NET application has the same effect if httpGetEnabled is set to true. In ASP. You can also explicitly throw instances of the SoapException class and have more control over the content of the SOAP fault that gets transmitted to the client. In WCF services, unhandled exceptions are not returned to clients as SOAP faults to prevent sensitive information being inadvertently exposed through the exceptions.
A configuration setting is provided to have unhandled exceptions returned to clients for the purpose of debugging. You can also add FaultContractAttribute attributes to operations to specify the faults that an operation might yield. Doing so results in the possible faults being advertised in the WSDL for the service, allowing client programmers to anticipate which faults can result from an operation, and write the appropriate catch statements.
In ASP. WCF services have timeouts by default that can be configured. Web services don't have any such property. Considering the above differences, it seems WCF is replacing web services The older service-oriented architecture developed in the. Net framework. But, WCF won't support the overloading method. It would be biased to say which one to prefer.
So, decide on your own what you want to use WCF development services or. It can be hosted on multiple platforms as in the application or on IIS, or using window service. As discussed above, Web Services work in a stateless environment. It can only be accessed over HTTP. WCF services can be hosted in different types of applications. WCF can be hosted in various scenarios. NET Web services. There is no support for multi-threading in web services.
First, ObjSumClass. From the above discussion, WCF service is definitely an advanced technology that Web service. WCF is faster than web service in terms of performance.
Improve Article. Like Article. Last Updated : 03 Jun, NET framework that is used to develop service-oriented applications. It allows you to develop applications that can communicate using different communication mechanisms. It is founded for other Microsoft Distributed Technologies and considered the future of distributed computing.
Because of its flexibility, it makes the development of endpoints much easier. It supports various programming languages and platforms. It is basically a software module specially designed to execute a certain set of tasks.
This service is specially used to make application platforms and technology independent. Following code will be used to build a service in Web service: [WebService] public class Service: System.
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