How to design finger print/ scanner based project in C#

In this article, I will show you, how to compare two images in c#. You can say that how to match prints images in c#. Basically, this types things we can implement in biometric systems like fingerprint etc. If you want to work on this system, follow these mentioned steps to complete this task.


Step-1:  Create a windows form project using Visual Studio, you can take any version of visual studio.

Step-2:  Design output type form in default added file ie. form1

Step-3:  Copy and Paste mentioned code, according to their controls

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Fingure_print
{
    public partial class Form2 : Form
    {
        Bitmap bitmapPictureBox1;
        Bitmap bitmapPictureBox2;
        public Form2()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {

            if (openFileDialog1.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {

                pictureBox1.ImageLocation = openFileDialog1.FileName;

                bitmapPictureBox1 = new Bitmap(openFileDialog1.FileName);
            }

        }

        private void button2_Click(object sender, EventArgs e)
        {
            if (openFileDialog1.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {

                pictureBox2.ImageLocation = openFileDialog1.FileName;

                bitmapPictureBox2 = new Bitmap(openFileDialog1.FileName);
            }

        }

        private void button3_Click(object sender, EventArgs e)
        {
            bool compare = ImageCompareString(bitmapPictureBox1,bitmapPictureBox2);
            if(compare==true)
            {
                MessageBox.Show("match");

            }
            else
            {
                MessageBox.Show("not");
            }
        }
        public static bool ImageCompareString(Bitmap firstImage, Bitmap secondImage)
    {
       MemoryStream ms = new MemoryStream();
        firstImage.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
        String firstBitmap = Convert.ToBase64String(ms.ToArray());
       ms.Position = 0;
   
       secondImage.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
        String secondBitmap = Convert.ToBase64String(ms.ToArray());
 
      if (firstBitmap.Equals(secondBitmap))
      {
         return true;
     }
       else
       {
          return false;
     }
   }
    }
}

Code Generates the following output