using System;

public class Program

{

    public static void Main()

    {   

        var t = new Test();

        var type = typeof(Test);

        var propertyInfo = type.GetProperty("Text", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Static);

        //var val = propertyInfo.GetValue(null, System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Static, null, null, null);

        var val = propertyInfo.GetValue(t, null);

        Console.WriteLine(val.ToString());

    }

}

​

public class Test

{

    private static string Text { get; set; }

    public Test(){

        Text = "Hello there!";

    }

}