6098/Cowain.Bake.BLL/Converter/StationIdConverter.cs

using System;
using System.Globalization;
using System.Linq;
using System.Windows.Data;
using Prism.Ioc;

namespace Cowain.Bake.BLL.Converter
{
    public class StationIdConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (value == null)
                throw new ArgumentNullException("value can not be null");
            if (value is int val)
            {
                var p = MyAppContainer.Current.Resolve<MemoryDataProvider>().AllStation.Where(x => x.Id == val).FirstOrDefault();
                if (null == p)
                {
                    return null;
                }
                else
                {
                    return p.Desc;
                }
            }
            return null;
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (value is string val)
            {
                var p = MyAppContainer.Current.Resolve<MemoryDataProvider>().AllStation.Where(x => x.Name == val).FirstOrDefault();
                if (null == p)
                {
                    return 0;
                }
                else
                {
                    return p.Id;
                }
            }
            return 0;
        }
    }
}