Revit.Plugln/FWindSoft/FWindSoft.Wpf/Converter/EnumToTComboxItemConvert.cs

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Data;

namespace FWindSoft.Wpf
{
    public class EnumToTComboxItemConvert : IValueConverter
    {
        public static EnumToTComboxItemConvert Instance = new EnumToTComboxItemConvert();
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            Type sourceType = value.GetType();
            if (!sourceType.IsEnum)
                return value;
            var enumerable = parameter as IEnumerable<Object>;
            if (enumerable == null)
                return value;
            var comboxItems = enumerable.OfType<TComboxItem>();
            return comboxItems.FirstOrDefault(i => System.Convert.ChangeType(i.Value, sourceType).Equals(System.Convert.ChangeType(value, sourceType)));

        }

        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            TComboxItem item = value as TComboxItem;
            if (item == null)
                return value;
            return System.Convert.ChangeType(item.Value, targetType);
        }
    }
}