designPatternGuru/DesignPatternGuru/Proxy/Proxies/Proxy.cs

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

namespace Proxy.Proxies
{
    internal class Proxy : ISubject
    {
        private RealSubject _realSubject;

        public Proxy(RealSubject realSubject)
        {
            _realSubject = realSubject;
        }

        public void Request()
        {
            if (!CheckAccess())
                return;

            _realSubject.Request();

            LogAccess();
        }

        public bool CheckAccess()
        {
            Console.WriteLine("Proxy: Checking access prior to firing a real request.");

            return true;
        }

        public void LogAccess()
        {
            Console.WriteLine($"Proxy: Logging the time of request@{DateTime.Now}");
        }
    }
}