using System;

using System.Reflection;

public class Program

{

    public static void Main()

    {

        TimeSpan ts = TimeSpan.FromMinutes(5);

​

        PropertyInfo ticksProperty = typeof(TimeSpan).GetProperty(nameof(TimeSpan.Ticks));

        MethodInfo getTicksMethod = ticksProperty.GetGetMethod(false);

        Console.WriteLine(getTicksMethod.Invoke(ts, Array.Empty<object>()));

        Func<TimeSpan, Int64> getTicks = (Func<TimeSpan, Int64>)Delegate.CreateDelegate(typeof(Func<TimeSpan, Int64>), getTicksMethod, true);

        Console.WriteLine(getTicks(ts));

    }

​

}