EnumToBoolConverter.cs

using System;
using System.Globalization;
using System.Windows.Data;

namespace ListViewSample
{
    [ValueConversion(typeof(ListViewMode), typeof(bool))]
    public sealed class EnumToBoolConverter : IValueConverter
    {
        /// <summary> Gets the default instance </summary>
        public static readonly EnumToBoolConverter Default = new();

        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (value is Enum enumVal && parameter is Enum paramVal)
            {
                var equal = System.Convert.ToInt64(paramVal) == 0
                    ? System.Convert.ToInt64(enumVal) == 0
                    : enumVal.HasFlag(paramVal);
                return equal;
            }

            return Binding.DoNothing;
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            return Equals(true, value)
                ? parameter
                : ((parameter != null) ? DefaultEnumValue(parameter.GetType()) : Binding.DoNothing);
        }

        public static object DefaultEnumValue(Type enumType)
        {
            if (enumType != null)
            {
                if (enumType.IsEnum)
                {
                    return Enum.GetValues(enumType).GetValue(0);
                }

                throw new ArgumentException("given type is not an enum");
            }

            return null;
        }
    }
}