what is interface in c# how to use.

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C#  .NET  Interface 
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I want to know What is Interface and how to use interface please help me.
  1. Post:279

    Re: what is interface in c# how to use.

    Interfaces define properties, methods, and events, which are the members of the interface. Interfaces contain only the declaration of the members. It is the responsibility of the deriving class to implement all properties and events methods.

    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using System;

    namespace InterfaceApplication
        public interface ITransactions
            // interface members
            void ViewTransaction();
            double GetTransactionAmount();

        public class Transaction : ITransactions
            private string TransactionCode;
            private string TransactionDate;
            private double TransactionAmount;
            public Transaction()
                TransactionCode = " ";
                TransactionDate = " ";
                TransactionAmount = 0.0;

            public Transaction(string Code, string Date, double Amount)
                TransactionCode = Code;
                TransactionDate = Date;
                TransactionAmount = Amount;

            public double GetTransactionAmount()
                return TransactionAmount;

            public void ViewTransaction()
                Console.WriteLine("TransactionCode: {0}", TransactionCode);
                Console.WriteLine("TransactionDate: {0}", TransactionDate);
                Console.WriteLine("TransactionAmount: {0}", GetTransactionAmount());
        class Manager
            static void Main(string[] args)
                ITransactions t1 = new Transaction("001", "8/10/2012", 78900.00);
                ITransactions t2 = new Transaction("002", "9/10/2012", 451900.00);




      Modified On Apr-10-2018 06:02:12 AM



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