how to create wcf service in asp.net with example

Description:
WCF is more popular now a days and for beginners, I will explain you step by step to create wcf service in asp.net c# with example following below:

• Open Visual Studio and select File => New => Project => WCF Service Application.
• Now appear IService1.cs and Service1.svc page in solution explorer.
• You can remove the default methods and class. 
• First of all create a class and its properties in IService1.cs page like below.

    [DataContract]

    public class Country

    {

        [DataMember]

        public int ID { get; set; }

        [DataMember]

        public string CountryName { get; set; }
    }