BetterLyrics/BetterLyrics.WinUI3/BetterLyrics.WinUI3/Converter/IndexToDisplayConverter.cs

using Microsoft.UI.Xaml.Data;
using System;

namespace BetterLyrics.WinUI3.Converter
{
    public partial class IndexToDisplayConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, string language)
        {
            int display = 0;
            if (value is int index)
            {
                display = index + 1;
            }
            return display.ToString();
        }

        public object ConvertBack(object value, Type targetType, object parameter, string language)
        {
            throw new NotImplementedException();
        }
    }
}