问如何在C#电报机器人应用程序接口中请求联系人

EN

private static async void Bot_OnMessage(MessageEventArgs e)
{
    // Defining Keyboard button that requests a contact
    KeyboardButton button = KeyboardButton.WithRequestContact("Send contact");  // Right here, the string defines what text appears on the button

    //Defining Keyboard that contains the button
    ReplyKeyboardMarkup keyboard = new ReplyKeyboardMarkup(button);

    // Send keyboard with message!
    // https://github.com/TelegramBots/Telegram.Bot/blob/master/src/Telegram.Bot/TelegramBotClient.cs#L506
    await Bot.SendTextMessageAsync(e.Message.Chat.Id, "Please send contact", replyMarkup:  keyborad);
}