using System;

using System.Collections.Generic;

using SixLabors.ImageSharp;

using SixLabors.ImageSharp.Formats;

public class Program

{

    public static byte[] StringToByteArray(String hex) //from stackoverflow https://stackoverflow.com/a/311179/323456

    {

      int NumberChars = hex.Length;

      byte[] bytes = new byte[NumberChars / 2];

      for (int i = 0; i < NumberChars; i += 2) { bytes[i / 2] = Convert.ToByte(hex.Substring(i, 2), 16); }

      return bytes;

    }

    public static void Main()

    {

        // tiniest gifs come from http://probablyprogramming.com/2009/03/15/the-tiniest-gif-ever

        List<byte[]> tiniestgifs_list = new List<byte[]>() { 

            StringToByteArray("47494638396101000100800100ffffff00000021f904010a0001002c00000000010001000002024c01003b"),

            StringToByteArray("4749463839610100010000000021f904010a0001002c00000000010001000002024c01003b"),

            StringToByteArray("47494638396101000100800100ffffff0000002c00000000010001000002024401003b"),

            StringToByteArray("4749463839610100010000ff002c00000000010001000002003b")

        };

        foreach(var tiniestgif in tiniestgifs_list)

        {

            Console.WriteLine("Using {0} length", tiniestgif.Length);

            Wrapped("Detect format on tiniestgif", () => {

                var imageformat = SixLabors.ImageSharp.Image.DetectFormat(tiniestgif);

                Console.WriteLine("imageformat: {0}", imageformat);

            });

​

            Wrapped("Load tiniestgif", () => {

                var image = Image.Load(tiniestgif);

                Console.WriteLine("image={0}",image.ToString());

            });

        }

        Console.WriteLine("Hello World");

    }

    public static void Wrapped(string message, Action action)

    {

        Console.WriteLine(message);

        Console.WriteLine("============================");

        try { action(); }

        catch(Exception ex) { Console.WriteLine(ex); }

        Console.WriteLine("============================");

        Console.WriteLine();

    }

​

}