This is a simple C# wrapper for telegram bot-API methods(https://core.telegram.org/bots/api)
Download from Nu-get: Install-Package TelegramBotNet
Usage:
TelegramBotApi api = new TelegramBotApi("Your bot token here, for example: 152319005:AAGgDQzm9Us3pPoWHc9gE4tFUIzSqNBjLsk");
var updates = api.GetUpdates();
var chatId = updates[0].Message.Chat.Id.ToString();
api.SendMessage(chatId, "Example");