Wyyme Software: WCF Fundamentals

Programming Clients

Demo of Using ServiceUtil.exe

This is one way to get the WSDL information via IE

This is another way to get WSDL information via ServiceUtil with META data

This is another way to get WSDL information via ServiceUtil with MEX protocol

Demo of using Service Reference

Programming WCF Channels

Demo of Creating, Using, and Closing Channels

Demo of Using Proxy Class

Handling Exceptions at Client Side

Demo of Handling Exceptions

Client Code:

Service Code:

Demo of Using Asynchronous

Demo of Sharing Service Contract Assemblies

Demo of Using Meta Data Resolver

RESTful Services

Introduction to RESTful service

Demo of REST-ful Service implementation

Uri httpUrl = new Uri("http://localhost:8090/MyService/EmployeeService");
                WebServiceHost host = new WebServiceHost(typeof(MyFirstRESTfulService.EmployeeService), httpUrl);
                host.Open();
            
                foreach (ServiceEndpoint se in host.Description.Endpoints)
                        Console.WriteLine("Service is host with endpoint " + se.Address);
                //Console.WriteLine("ASP.Net : " + ServiceHostingEnvironment.AspNetCompatibilityEnabled);
                Console.WriteLine("Host is running... Press < Enter > key to stop");
                Console.ReadLine();

Step 8:Now we can start with client application. For this example we can create a console application to read the employee information and add new employee to the server resource. Below code first read the employee details from the server and add new employee and once again it read the employee details to confirm the added resource.

WebChannelFactory < IEmployeeService > cf =
               new WebChannelFactory< IEmployeeService >(
                   new Uri("http://localhost:8090/MyService/EmployeeService"));
            IEmployeeService client = cf.CreateChannel();
            var d = client.GetEmployee(1);
            //Load all the Employee from the server and display
           foreach (Employee e in   client.GetAllEmployeeDetails() )
           {
           Console.WriteLine(string.Format("EmpID:{0}, Name:{1} {2}",e.EmpId ,e.Fname ,e.Lname ));
           }

            //Add new user
           client.AddEmployee(new Employee() { EmpId = 11, Fname = "John", Lname = "J", JoinDate = new DateTime(2010, 7, 24), Age = 34, Salary = 10000, Designation = "Software Engineer" });
        
            Console.WriteLine("******************After adding new user ****************");

        //Load all the Employee from the server and display
         foreach (Employee e in   client.GetAllEmployeeDetails() )
           {
           Console.WriteLine(string.Format("EmpID:{0}, Name:{1} {2}",e.EmpId ,e.Fname ,e.Lname ));
           }
            Console.ReadLine();
        }

JSON using WCF service

[ServiceContract()]
    public interface IEmployeeService
    {
        [WebGet(UriTemplate = "Employee", ResponseFormat=WebMessageFormat.Json )]
        [OperationContract]
        List < Employee > GetAllEmployeeDetails();

        [WebGet(UriTemplate = "Employee?id={id}", ResponseFormat = WebMessageFormat.Json)]
        [OperationContract]
        Employee GetEmployee(int Id);

        [WebInvoke(Method = "POST", UriTemplate = "EmployeePOST", ResponseFormat = WebMessageFormat.Json, RequestFormat = WebMessageFormat.Json)]
        [OperationContract]
        void AddEmployee(Employee newEmp);

        [WebInvoke(Method = "PUT", UriTemplate = "EmployeePUT", ResponseFormat = WebMessageFormat.Json, RequestFormat = WebMessageFormat.Json)]
        [OperationContract]
        void UpdateEmployee(Employee newEmp);

        [WebInvoke(Method = "DELETE", UriTemplate = "Employee/{empId}", ResponseFormat = WebMessageFormat.Json)]
        [OperationContract]
        void DeleteEmployee(string empId);
    }