Round shaped buttons

First make a class. Give it name: "RoundButton". Then write the code directly as this:

using System;
using System.Collections.Generic;
using System.Drawing.Drawing2D;
using System.Windows.Forms;
using System.Linq;
using System.Text;

namespace WindowsFormsApplication1
{
    public class RoundButton : Button
    {
        protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)
        {
            GraphicsPath grPath = new GraphicsPath();
            grPath.AddEllipse(0, 0, ClientSize.Width, ClientSize.Height);
            this.Region = new System.Drawing.Region(grPath);
            base.OnPaint(e);
        }
    }

}

Then, build your application and close this.

Now go to the toolbox and you will see a control named RoundButton.

Then drag and drop this on your Windows form and test it.

Code project has many articles about these kinds of things, especially the article RoundButton Windows Control - Ever Decreasing Circles might be of interest since it shows you have to do different kinds of round buttons.

GraphicsPath p = new GraphicsPath();
p.AddEllipse(1, 1, button1.Width - 4, button1.Height - 4);
button1.Region = new Region(p);