1public interface IBankConnection
2{
3    void Connect();
4    void TransferMoney(string sourceAccount, string destinationAccount, decimal amount);
5}

1public class OnlineBankConnection : IBankConnection
2{
3    public void Connect()
4    {
5        Console.WriteLine("Connected to online banking server");
6    }
7
8    public void TransferMoney(string sourceAccount, string destinationAccount, decimal amount)
9    {
10        // الگوریتم انتقال پول از حساب مبدا به حساب مقصد در حالت آنلاین
11        Console.WriteLine($"Transferring {amount} from account {sourceAccount} to account {destinationAccount} online");
12    }
13}
14
15public class ATMBankConnection : IBankConnection
16{
17    public void Connect()
18    {
19        Console.WriteLine("Connected to ATM server");
20    }
21
22    public void TransferMoney(string sourceAccount, string destinationAccount, decimal amount)
23    {
24        // الگوریتم انتقال پول از حساب مبدا به حساب مقصد در حالت ATM
25        Console.WriteLine($"Transferring {amount} from account {sourceAccount} to account {destinationAccount} via ATM");
26    }
27}

1public class BankAccount
2{
3    protected IBankConnection bankConnection;
4
5    public BankAccount(IBankConnection bankConnection)
6    {
7        this.bankConnection = bankConnection;
8    }
9
10    public void ConnectToBank()
11    {
12        bankConnection.Connect();
13    }
14
15    public void TransferMoney(string sourceAccount, string destinationAccount, decimal amount)
16    {
17        bankConnection.TransferMoney(sourceAccount, destinationAccount, amount);
18    }
19}

1public class Program
2{
3    public static void Main()
4    {
5        IBankConnection onlineBankConnection = new OnlineBankConnection();
6        BankAccount onlineBankAccount = new BankAccount(onlineBankConnection);
7        onlineBankAccount.ConnectToBank();
8        onlineBankAccount.TransferMoney("123456789", "987654321", 1000);
9
10        IBankConnection atmBankConnection = new ATMBankConnection();
11        BankAccount atmBankAccount = new BankAccount(atmBankConnection);
12        atmBankAccount.ConnectToBank();
13        atmBankAccount.TransferMoney("123456789", "987654321", 500);
14    }
15}

Connected to online banking server
Transferring 1000 from account 123456789 to account 987654321 online
Connected to ATM server
Transferring 500 from account 123456789 to account 987654321 via ATM