MFACodeGenerator/MFACodeGenerator.MAUI/MainPage.xaml.cs

using OtpNet;

namespace MFACodeGenerator.MAUI
{
    public partial class MainPage : ContentPage
    {
        int count = 0;

        public MainPage()
        {
            InitializeComponent();
        }


        private async void OnGenerateMFACode(object s, EventArgs e)
        {
            try
            {
                var key = Base32Encoding.ToBytes(InputBox.Text.Replace(" ", string.Empty));
                var secretCode =
                    new Totp(key, 30, OtpHashMode.Sha1, 6);
                var authCode = secretCode.ComputeTotp();
                MFACodeOutput.Text = authCode;
                //Clipboard.SetText(authCode, TextDataFormat.Text);
                await Clipboard.SetTextAsync(authCode);
            }
            catch
            {
                MFACodeOutput.Text = "Invalid TOTP Secret... Check your inputs!";
            }
        }
        private void OnCounterClicked(object sender, EventArgs e)
        {
            count++;

            if (count == 1)
                CounterBtn.Text = $"Clicked {count} time";
            else
                CounterBtn.Text = $"Clicked {count} times";

            SemanticScreenReader.Announce(CounterBtn.Text);
        }
    }
}