using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        var A = new ComplexDto(){ DateFrom = DateTime.Now };

        var B = new ComplexDto(){ DateFrom = A.DateFrom };

        var C = new ComplexDto(){ DateFrom = DateTime.Now };

        Console.WriteLine(A.IsEqualGeneric(B));

        Console.WriteLine(C.IsEqualGeneric(B));

        Console.WriteLine(A.IsEqualGeneric(C));

    }

}

​

public class ComplexDto

{

    public DateTime DateFrom { get; set; }

    public DateTime DateTo { get; set; }

}

​

public static class ComplexDtoExtensions

{

    public static bool IsEqual(this ComplexDto obj, ComplexDto other)

    {

        return obj.DateFrom == other.DateFrom && obj.DateTo == other.DateTo;

    }

    public static bool IsEqualGeneric<T>(this T obj, T other)

    {

        var pis = typeof(T).GetProperties();

        foreach(var pi in pis)

        {

            //Console.WriteLine(pi.GetType().IsValueType);

            if(!pi.GetType().IsClass && !pi.GetValue(obj).Equals(pi.GetValue(other)))

                return false;

            if(pi.GetType().IsClass && !pi.GetValue(obj).IsEqualGeneric(pi.GetValue(other)))

                return false;

        }

        return true;

    }

}