We are proud to present you our unique image comparison application in C#.Net.C# .Net provides a good support for processing on the image,and the purpose of this tutorial is not to give you a lot of insight into the image processing, rather it is written to help you start your image processing career using C#.Lets create a project and compare two images using this application.to do this follows the given steps:

Step 1: In Visual studio 2005. click on file menu -> New -> Project then the following dialogbox will appear.

Two LinkLable
One Button
Two OpenFileDialog
ProgressBar
PictureBox

Step 4: Double click on form and write the following line on the form_load.

private void Form1_Load(object sender, EventArgs e)
{
      progressBar1.Visible = false;
      pictureBox1.Visible = false;;
}

Step 5: Add using System.IO; the namespace.

Step 6: Write the following line on the linkLabel1_LinkClicked event

private void linkLabel1_LinkClicked
                                          (object sender,LinkLabelLinkClickedEventArgs e)
{
      openFileDialog1.FileName = "";
      openFileDialog1.Title = "Images";
      openFileDialog1.Filter = "All Images|*.jpg; *.bmp; *.png";
      openFileDialog1.ShowDialog();
      if (openFileDialog1.FileName.ToString() != "")
      {
         fname1 = openFileDialog1.FileName.ToString();
      }
}

Step 7: Write the following line on the linkLabel2_LinkClicked event

private void button1_Click(object sender, EventArgs e)
{
      progressBar1.Visible = true;
      string img1_ref, img2_ref;
      img1 = new Bitmap(fname1);
      img2 = new Bitmap(fname2);
      progressBar1.Maximum = img1.Width;
      if (img1.Width == img2.Width && img1.Height == img2.Height)
      {
         for (int i = 0; i < img1.Width; i++)
         {
         for (int j = 0; j < img1.Height; j++)
         {
            img1_ref = img1.GetPixel(i, j).ToString();
            img2_ref = img2.GetPixel(i, j).ToString();
            if (img1_ref != img2_ref)
            {
               count2++;
               flag = false;
               break;
            }
            count1++;
         }
         progressBar1.Value++;
      }
      if (flag == false)
         MessageBox.Show("Sorry,Images are not same," + count2 +
                                     "wrong pixels found");
      else
         MessageBox.Show(" Images are same ," + count1 +
                                    "same pixels found and " + count2 +
                                     "wrong pixels found");
      }
      else
         MessageBox.Show("can not compare this images");
         this.Dispose();
}

Step 9: Now debug the application.