Telesharp is library, which can help you to create bots for Telegram with C#.

Use the token sent by @BotFather

You can create bot, who doing nothing:

var Bot = new Bot(INSERT_YOUR_TOKEN_HERE);
Bot.Run();
Bot.WaitToDie();

You can create bot, who send random zombie sounds:

var zombieSounds = new []{"aggrh", "zzz", "grrrr", "arrr", "ogrrrh"};
var Bot = new Bot(INSERT_YOUR_TOKEN_HERE);
Bot.OnParseMessage += (o,e) =>
{
	Bot.Methods.SendMessage(e.Message.Chat,
		zombieSounds[(new Random(DateTime.Now.Millisecond))
			.Next(0, zombieSounds.Length)]);
};
Bot.Run();
Bot.WaitToDie();

1. Message listener
2. Sticker-Sender bot
3. LIKE5 wallpapers bot

Not all methods included in this API.

Excluded:

• setWebhook([Optional] String url, [Optional] InputFile certificate)

It is needed? Vote here

Temporarily not included:

• sendCustomRequest(String uri, Dictionary<String, Object> parametrs)
• sendVoice(Integer chat_id, InputFile voice, [Optional] duration, [Optional] reply_to_message_id, [Optional] reply_markup)

You can get help on using the API bots here

Bots FAQ