C# Image Scanner Sample

using ImageScanner.Properties;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace ImageScanner
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void btnScan_Click(object sender, EventArgs e)
        {
            Stopwatch sw = new Stopwatch();
            sw.Start();

            Bitmap screenCapture = new Bitmap(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height);

            Graphics g = Graphics.FromImage(screenCapture);

            g.CopyFromScreen(Screen.PrimaryScreen.Bounds.X,
                             Screen.PrimaryScreen.Bounds.Y,
                             0, 0,
                             screenCapture.Size,
                             CopyPixelOperation.SourceCopy);

            Bitmap myPic = Resources.Capture;

            bool isInCapture = IsInCapture(myPic, screenCapture);

            sw.Stop();

            TimeSpan ts = sw.Elapsed;
        }

        private bool IsInCapture(Bitmap searchFor, Bitmap searchIn)
        {
            for (int x = 0; x < searchIn.Width; x++)
            {
                for (int y = 0; y < searchIn.Height; y++)
                {
                    bool invalid = false;
                    int k = x, l = y;
                    for (int a = 0; a < searchFor.Width; a++)
                    {
                        l = y;
                        for (int b = 0; b < searchFor.Height; b++)
                        {
                            if (searchFor.GetPixel(a, b) != searchIn.GetPixel(k, l))
                            {
                                invalid = true;
                                break;
                            }
                            else
                                l++;
                        }
                        if (invalid)
                            break;
                        else
                            k++;
                    }
                    if (!invalid)
                        return true;
                }
            }
            return false;
        }
    }
}