自定义转换器 IValueConverter

[ValueConversion(typeof(DateTime), typeof(String))]
public class DateConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        DateTime date = (DateTime)value;
        return date.ToShortDateString();
    }

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
    {
        string strValue = value as string;
        DateTime resultDateTime;
        if (DateTime.TryParse(strValue, out resultDateTime))
        {
            return resultDateTime;
        }
        return DependencyProperty.UnsetValue;
    }
}

<src:DateConverter x:Key="dateConverter"/>

<TextBlock Grid.Row="2" Grid.Column="0" Margin="0,0,8,0" Name="startDateTitle"Style="{StaticResource smallTitleStyle}">Start Date:</TextBlock>

<TextBlock Name="StartDateDTKey" Grid.Row="2" Grid.Column="1" 
Text="{Binding Path=StartDate, Converter={StaticResource dateConverter}}" 
Style="{StaticResource textStyleTextBlock}"/>