using System;
using System.Windows.Data;
 
namespace WpfApplication1
{
    class DateTimeConverter1 : IValueConverter
    {
        // Convertは問題なし。
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            // DateTime型 -> HH:ss (時刻だけを表示する)
            var d = System.Convert.ToDateTime(value);
            return d.ToString("HH:ss");
        }
 
        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            // valueにはテキストボックスに入力したstring型の時刻(HH:mm)が入っている。
 
            // この書き方だと結局 Today になってしまう。
            DateTime d = System.Convert.ToDateTime(value.ToString());
 
            return d;
        }
    }
}
 

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