using System;

public class Program

{

    public static void Main()

    {

        var testObject = new TestClass();

        Console.WriteLine(testObject.B == default);

        var property = testObject.GetType().GetProperty("B");

        var value = property.GetValue(testObject);

        Console.WriteLine(value == default);

    }

    public class TestClass 

    {

        public bool B { get; set; }

    }

}