Source code of Chapter 1, Tutorial 2, Section 2

using System;
using System.Drawing;
using Silk.NET.Maths;
using Silk.NET.Windowing;
using Silk.NET.OpenGL;

namespace MyProgram;

public class Program
{
    private static IWindow _window;
    private static GL _gl;
    
    public static void Main(string[] args)
    {
        WindowOptions options = WindowOptions.Default;
        options.Size = new Vector2D<int>(800, 600);
        options.Title = "1.2 - Drawing a Quad";

        _window = Window.Create(options);
        
        _window.Load += OnLoad;
        _window.Update += OnUpdate;
        _window.Render += OnRender;
        _window.Run();
    }

    private static void OnLoad()
    {
        _gl = _window.CreateOpenGL();
        
        _gl.ClearColor(Color.CornflowerBlue);
    }

    private static void OnUpdate(double deltaTime) { }
    
    private static void OnRender(double deltaTime)
    {
        _gl.Clear(ClearBufferMask.ColorBufferBit);
    }
}

---