How To Create WCF Service

Submitted by thusitcp on Wednesday, October 15, 2014 - 23:24.

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Introduction In this tutorial you are going to learn WCF one of the key features of Visual Studio. WCF stand for windows communication foundation. WCF is one of powerful introduction of .net framework and provide grate solutions for space left by the web services. Using WCF we can build secure, reliable, transacted solutions that integrate across platforms. Building a distributed system is a very common task for many programmers. However, doing so involves confronting numerous design challenges. WCF has overcome most of the issues with most of distributed system previously had. Features of WCF

1
Service Orientation

Interoperability

Multiple Message Patterns

Service Metadata

Data Contracts

Security

Multiple Transports and Encodings

Reliable and Queued Messages

Durable Messages

Transactions

AJAX and REST Support

Extensibility

Before going to code WCF application we should learn some of key concepts of WCF API. What is end point? WCF Services exposes a collection of Endpoints, each Endpoint is a portal for communicating with the world. Endpoint is used to identify the service; it is more are like an address for your home. Each endpoint is used to identify the specific service. One service can have multiple endpoints. Client application will use this endpoint for communication with service. All the WCF communications are take place through end point. End point consists of three components. Address, Binding and Contract (ABC ) What is address Address is the place which has ability to send WCF messages. In another word it has describe WHERE service has hosted What is binding ? Binding represent how the message are sent. In other word it specify the type of communication WCF provides the following transport schemas like: HTTP, TCP, Peer Network, IPC (Inter Process Communicatiion), MSMQ. Basically this describe How end points are communicating What is Contract ? It defines “WHAT”. Contract identifies what is exposed by the service. example of service end point http://localhost:5784/CustomerServoce.svc How to create WCF Application Open VS 2010 File -> New -> Project Select Visual C# -> WCF (also select .net framework 4.0) -> select WCF Service Application Template. Give Name -> EchoService Click OK. Adding a Service Right Click the project folder in Solution Explorer of VS 2010, select -> Add new Item, select -> Web, select -> WCF Service. Name it -> CustomerService.svc create service

Adding a DataContract Right Click the project, select -> Add new Item, select -> web, select -> Class. Name it -> Customer.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Runtime.Serialization;
 
namespace EchoService
{
    [DataContract]
    public class Customer
    {
 
        [DataMember]
        public string customerName { get; set; }
 
        [DataMember]
        public string customerAddress { get; set; }
 
        [DataMember]
        public int customerAge { get; set; }
 
        [DataMember]
        public string customerCity { get; set; }
 
    }
}

Service Interface

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.Text;
 
namespace EchoService
{
    // NOTE: You can use the "Rename" command on the "Refactor" menu to change the interface name "ICustomerService" in both code and config file together.
    [ServiceContract]
    public interface ICustomerService
    {
        [OperationContract]
         string GetCustomerName(string name);
 
        [OperationContract]
         string GetCustomerAddress(string address);
 
        [OperationContract]
         Customer GetCustomerDetails();
 
        [OperationContract]
         List<Customer> GetCustomerS();
 
 
    }
}

Implementing the service. Usually WCF project can have lots of services but to implement successfully you should have at least one service.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.Text;
 
namespace EchoService
{
    // NOTE: You can use the "Rename" command on the "Refactor" menu to change the class name "CustomerService" in code, svc and config file together.
    public class CustomerService : ICustomerService
    {
 
        public string GetCustomerName(string name)
        {
 
            return string.Format("Customer Name Is : {0}", name);
 
        }
 
        public string GetCustomerAddress(string address)
        {
 
            return string.Format("Customer Address Is : {0}", address);
 
        }
 
 
        public Customer  GetCustomerDetails()
        {
 
           Customer newCustomer = new Customer();
 
            newCustomer.customerName = "Smith";
            newCustomer.customerAddress = "River Avanue NW11E London";
            newCustomer.customerAge = 25;
            newCustomer.customerCity = "London";
 
            return newCustomer;
 
        }
 
 
        public List<Customer> GetCustomerS()
        {
            List<Customer> Clist = new List<Customer>();
 
            Customer newCustomer1 = new Customer();
 
            newCustomer1.customerName = "Smith";
            newCustomer1.customerAddress = "River Avanue NW11E London";
            newCustomer1.customerAge = 25;
            newCustomer1.customerCity = "London";
 
            Clist.Add(newCustomer1);
 
            Customer newCustomer2 = new Customer();
 
            newCustomer2.customerName = "Jhone";
            newCustomer2.customerAddress = "No 125/2 Texas US";
            newCustomer2.customerAge = 40;
            newCustomer2.customerCity = "Texas";
 
            Clist.Add(newCustomer2);
 
            return Clist;
        }
 
    }
}

Testing service. It is very simple. Just press Ctrl + F5 then WCF test client will open. Now you can test you service without implement on server

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