OnlyShowNonEmpty.cs

using System.Globalization;
 
namespace NeuroAccessMaui.UI.Converters
{
    public class OnlyShowNonEmpty : IValueConverter, IMarkupExtension
    {
        public object? Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
        {
            if (value is string s)
                return !string.IsNullOrEmpty(s);
            else if (value is bool b)
                return b;
            else
                return value is not null;
        }
 
        public object? ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture)
        {
            return value?.ToString() ?? string.Empty;
        }
 
        public object ProvideValue(IServiceProvider serviceProvider)
        {
            return this;
        }
    }
}