XNA FPS Meter

FpsMeter.cs

using System.Collections.Generic;
using System.Linq;
using Microsoft.Xna.Framework;

namespace eindproject
{
    public class FPSMeter : DrawableGameComponent
    {
        public FPSMeter(Game game)
            : base (game)
        {
            _updateTimes = new List<float>();
            _drawTimes = new List<float>();
        }

        public float DrawFPS
        {
            get { return _drawTimes.Count() / _drawTimes.Sum(); }
        }
        public float UpdateFPS
        {
            get { return _updateTimes.Count() / _updateTimes.Sum(); }
        }

        public override void Update(GameTime gameTime)
        {
            _updateTimes.Add((float)gameTime.ElapsedGameTime.TotalSeconds);

            while (_updateTimes.Sum() > 1f)
                _updateTimes.RemoveAt(0);
        }

        public override void Draw(GameTime gameTime)
        {
            _drawTimes.Add((float)gameTime.ElapsedGameTime.TotalSeconds);

            while (_drawTimes.Sum() > 1f)
                _drawTimes.RemoveAt(0);
        }


        private List<float> _updateTimes;
        private List<float> _drawTimes;
    }
}