Catel - Part 4 of n: Unit testing with Catel

using System;
using System.Globalization;

#if !SILVERLIGHT
using System.Windows.Data;
#endif

namespace Catel.Windows.Data.Converters
{
    /// <summary>
    /// ShortDateFormattingConverter
    /// </summary>
#if !SILVERLIGHT
    [ValueConversion(typeof(DateTime), typeof(string))]
#endif
    public class ShortDateFormattingConverter : FormattingConverter
    {
        #region Constructors
        /// <summary>
        /// Initializes a new instance of the <see cref="ShortDateFormattingConverter"/> class.
        /// </summary>
        public ShortDateFormattingConverter()
            : base("d")
        {
        }
        #endregion

        #region Methods
        /// <summary>
        /// Convert back.
        /// </summary>
        /// <param name="value">A value.</param>
        /// <param name="targetType">Target type.</param>
        /// <param name="parameter">Parameter.</param>
        /// <param name="culture">A culture.</param>
        /// <returns>Converted value.</returns>
        /// <remarks>We don't intend this to ever be called.</remarks>
        public override object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            DateTime dateTimeValue;
            bool parsed = DateTime.TryParse(value as string, culture, DateTimeStyles.None, out dateTimeValue);

            return parsed ? dateTimeValue : ConverterHelper.DoNothingBindingValue;;
        }
        #endregion
    }
}