using System;

using System.Reflection;

​

public class Bar

{

}

​

public enum AnEnum

{

    Enum1,

    Enum2,

}

​

public class Foo

{

    public int TheInt { get; set; }

    public string TheString { get; set; }

    public DateTimeOffset TheStruct { get; set; }

    public AnEnum TheEnum { get; set; }

    public Bar TheCustomObject { get; set; }

}

public class Program

{

    public static void Main()

    {

        Foo foo = new Foo

        {

            //TheInt = 3,

            //TheString = "blabla",

            //TheStruct = DateTimeOffset.Now,

            //TheEnum = AnEnum.Enum2,

            //TheCustomObject = new Bar(),

        };

        foreach (PropertyInfo property in foo.GetType().GetProperties())

        {

            object def = property.PropertyType.IsValueType ? Activator.CreateInstance(property.PropertyType) : null;

            object val = property.GetValue(foo);

            if (object.Equals(val, def))

            {

                Console.WriteLine("foo." + property.Name + " value is the default value (" + val + ')');

            }

            else

            {

                Console.WriteLine("foo." + property.Name + " value is not the default value (" + val + ')');

            }

        }

    }

}