title: How to crop a square Image and change it into a circle C#
body: <p>Am a newbie when it comes to c#, I was wondering if it's possible to make a circular shaped pictureBox in c# winforms.
  I am making a simple Software where people could choose pictures and set it to a picturebox. So I can't ask every user to go on Photoshop and make their image circular. Is it possible to make a Circular pictureBox which Crop the picture and update the picture file which should be in PNG Format with transparent background?</p>
  
  <p>My current code to set the image in the pictureBox1 on button1 Click Event:</p>
  
  <pre><code>private void button1_Click(object sender, EventArgs e)
      {
          OpenFileDialog OFD = new OpenFileDialog();
          if (OFD.ShowDialog() == DialogResult.OK)
          {
              Bitmap Image = new Bitmap(OFD.FileName);
              pictureBox1.Image = Image;
              pictureBox1.SizeMode = PictureBoxSizeMode.Zoom;
          }
      }
  </code></pre>
  
  <p>I have no Idea on how I could do this or where to start searching! Some help will be grateful. </p>