using System;

public class Program

{

    public static void Main()

    {

        var p = new Person {

            Name = "Mark",

            AddressDetail = new Address {

                Street = "First St.",

                CountryDetail = new Country {

                    CountryName = "USA"

                }

            }

        };

        var nested1 = GetPropertyValue(p, "Name");

        var nested2 = GetPropertyValue(p, "AddressDetail.Street");

        var nested3 = GetPropertyValue(p, "AddressDetail.CountryDetail.CountryName");

        Console.WriteLine(nested1);

        Console.WriteLine(nested2);

        Console.WriteLine(nested3);

    }

    public static object GetPropertyValue(object src, string propName)

    {

        if (src == null) throw new ArgumentException("Value cannot be null.", "src");

        if (propName == null) throw new ArgumentException("Value cannot be null.", "propName");

        if(propName.Contains("."))//complex type nested

        {

            var temp = propName.Split(new char[] { '.' }, 2);

            return GetPropertyValue(GetPropertyValue(src, temp[0]), temp[1]);

        }

        else

        {

            var prop = src.GetType().GetProperty(propName);

            return prop != null ? prop.GetValue(src, null) : null;

        }

    }

}

​

​

​

public class Person{

    public string Name { get; set;}

    public Address AddressDetail { get; set;}

}

​

public class Address{

    public string Street { get; set;}

    public Country CountryDetail { get; set;}

}

​

public class Country{

    public string CountryName { get; set;}

}