using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Drawing;

namespace EventsDelegatesDemo
{
    class ImageManipulation
    {

        public class ImageEventArgs : EventArgs
        {
            public Bitmap bmap { get; set; }
        }

        public void Manipulate(Bitmap bmap)
        {
            Color theColor = new Color()

            for (int i = 0; i < bmap.Width; i++)
            {
                for (int j = 0; j < bmap.Height; j++)
                {
                    theColor = bmap.GetPixel(i, j);

                    Color newColor = Color.FromArgb(theColor.R, theColor.G, 0);

                    bmap.SetPixel(i, j, newColor);
                }
            }

            OnImageFinished(bmap);
        }

        public event EventHandler<ImageEventArgs> ImageFinished;

        protected virtual void OnImageFinished(Bitmap bmap)
        {
            ImageFinished?.Invoke(this, new ImageEventArgs() { bmap = bmap });
        }
    }
}