gistfile1.cs

using System;
using Castle.DynamicProxy;
using NUnit.Framework;

namespace ProxyMagic
{
    public class DataObject
    {
        public string FirstName { get; set; }
        public string LastName { get; set; }
        public int Age { get; set; }
    }

    public interface IDataObject
    {
        string FirstName { get; }
        string LastName { get; }
        int Age { get; }
    }

    public class ProxyInterceptor : IInterceptor
    {
        private readonly object data;

        public ProxyInterceptor(object data)
        {
            this.data = data;
        }

        public void Intercept(IInvocation invocation)
        {
            var method = invocation.Method;
            var targetMethod = data.GetType().GetMethod(method.Name);
            invocation.ReturnValue = targetMethod.Invoke(data, invocation.Arguments);
        }
    }

    [TestFixture]
    public class ProxyTest
    {
        [Test]
        public void Should()
        {
            var data = new DataObject
            {
                FirstName = "firstname",
                LastName = "lastname",
                Age = 30
            };

            var generator = new ProxyGenerator();

            var proxy = generator.CreateInterfaceProxyWithoutTarget<IDataObject>(
                new ProxyInterceptor(data));

            Console.WriteLine(proxy.FirstName);
            Console.WriteLine(proxy.LastName);
        }
    }
}