Simple Graphics Program in C#

Here's an example of a simple graphics program in C# using Windows Forms:

using System;

using System.Drawing;

using System.Windows.Forms;

namespace GraphicsProgram

{

    public class MyForm : Form

    {

        public MyForm()

        {

            // Set the size of the form

            Size = new Size(400, 400);

        }

        protected override void OnPaint(PaintEventArgs e)

        {

            // Call the base class OnPaint method first

            base.OnPaint(e);

            // Create a Graphics object from the PaintEventArgs

            Graphics g = e.Graphics;

            // Draw a rectangle

            Pen pen = new Pen(Color.Red, 2);

            Rectangle rect = new Rectangle(50, 50, 200, 100);

            g.DrawRectangle(pen, rect);

            // Draw a line

            Point startPoint = new Point(50, 50);

            Point endPoint = new Point(250, 150);

            g.DrawLine(pen, startPoint, endPoint);

            // Draw text

            Font font = new Font("Arial", 14);

            Brush brush = new SolidBrush(Color.Blue);

            g.DrawString("Hello, C#!", font, brush, 50, 200);

        }

        public static void Main()

        {

            // Create an instance of the form

            Application.Run(new MyForm());

        }

    }

}

In this example, we create a custom `MyForm` class that inherits from `Form`. We override the `OnPaint` method to perform custom painting on the form's surface. Inside the `OnPaint` method, we use a `Graphics` object to draw a rectangle, a line, and text on the form.

The `Main` method creates an instance of the `MyForm` class and runs it using the `Application.Run` method.

When you run this program, it will display a window with a rectangle, a line, and some text drawn on it. You can customize the drawing parameters and add more shapes or elements as per your requirements.

Note that this example uses Windows Forms for basic graphics programming. For more advanced or interactive graphics applications, you may consider using frameworks like WPF, DirectX, or OpenGL, depending on your specific needs.