Add WCF Service to the “MyWCFService” project and named as Myservice.svc
What is Service Contracts ?
Describe which operations the client can perform on the service. There are two types of Service Contracts.
ServiceContract - This attribute is used to define the Interface.
OperationContract - This attribute is used to define the method inside Interface.
IMyService.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.Text;
[ServiceContract]
public interface IService
{
[OperationContract]
Employeee GetEmployee(int id);// service method
}
Then we can implement above interface
MyService.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.Text;
using Common;
public class MyService: IMyService
{
#region MyService Members
public Employeee GetEmployee(int id)//service method implimentation
{
Employeee emp = new Employeee { EmpId = Guid.NewGuid(),Name="Dinesh",Type=EmployeeTypesEnum.Accounter };
return emp;
}
#endregion
}
What is Data contracts?
Define which data types are passed to and from the service. WCF defines implicit contracts for built-in types such as int and string, but we can easily define explicit opt-in data contracts for custom types.
Types Supported by the Data Contract Serializer
There are two types of Data Contracts.
DataContract - attribute used to define the class
DataMember - attribute used to define the properties
Add Class Employee to the solution
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.Serialization;
using System.ServiceModel;
[DataContract]
public class Employeee
{
[DataMember]
public Guid EmpId { get; set; }
[DataMember]
public string Name { get; set; }
[DataMember]
public EmployeeTypesEnum Type { set; get; }
}
How To Pass Enum with WCF services?
To pass Enum the Data contracts should be define with EnumMember() attributes.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.Serialization;
[DataContract]
public enum EmployeeTypesEnum
{
[EnumMember()]
Administrator = 0,
[EnumMember()]
Manager = 1,
[EnumMember()]
Accounter = 2
}
How to Test WCF application ?
WCF service can test with WCF Test Client (WcfTestClient.exe) by execute WcfTestClient.exe commond in Visual Studio Command prompt .
