using System;

using System.Linq;

using System.Reflection;

​

namespace SO_06

{

    public class MyClass

    {

        public int A = -1;

        public ConsoleColor B = ConsoleColor.Green;

        public string C = "TESTTEST";

​

        public MyClass(int a, ConsoleColor b, string c = "I am optional parameter value")

        {

            this.A = a;

            this.B = b;

            this.C = c;

        }

    }

    public static class MyFactory

    {

        public static T MyCreateInstance<T>()

            where T : class

        {

            return (T) MyCreateInstance(typeof (T));

        }

​

        public static object MyCreateInstance(Type type)

        {

            var ctor = type

                .GetConstructors()

                .FirstOrDefault(c => c.GetParameters().Length > 0);

​

            if (ctor == null)

            {

                return Activator.CreateInstance(type);

            }

​

            var result =

                ctor.Invoke

                    (ctor.GetParameters()

                        .Select(p =>

                            p.HasDefaultValue? p.DefaultValue :

                            p.ParameterType.IsValueType && Nullable.GetUnderlyingType(p.ParameterType) == null

                                ? Activator.CreateInstance(p.ParameterType)

                                : null

                        ).ToArray()

                    );

​

            return result;

        }

    }

​

    public class Program

    {

        public static void Main(string[] args)

        {

            var someType =

                Assembly.GetExecutingAssembly()

                    .GetTypes()

                    .FirstOrDefault();

​

            var instance = MyFactory.MyCreateInstance(someType);

​

            var values = someType.GetFields().Select(f => f.GetValue(instance)).ToArray();

​

            foreach (var value in values)

            {

                Console.WriteLine(value);

            }

        }

​

    }

}

​