using System;

using System.Linq.Expressions;

​

public class Program

{

    class Foo

    {

        public Foo() { Bar = new Bar(); }

        public Bar Bar { get; set; }

    }

​

    class Bar

    {

        public Bar() { Baz = new Baz(); }

        public Baz Baz { get; set; }

    }

​

    class Baz

    {

        public string SomeProperty { get; set; }        

    }

​

    public static string GetPathOfProperty<T>(Expression<Func<T>> property)

    {

        string resultingString = string.Empty;

        var  p = property.Body as MemberExpression;

        while (p != null)

        {               

            resultingString = p.Member.Name + (resultingString != string.Empty ? "." : "") + resultingString;

            p = p.Expression as MemberExpression;

        }

        return resultingString;         

    }

    public static void Main(string[] args)

    {

        var Foo = new Foo();

        Console.WriteLine(GetPathOfProperty(() => Foo.Bar.Baz.SomeProperty ));

    }

}